NEET 2023
Paper was held on Sun, May 7, 2023 4:30 AM
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Biology

Movement and accumulation of ions across a membrane against their concentration gradient can be explained by
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Among ‘The Evil Quartet’, which one is considered the most important cause driving extinction of species?
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Identify the pair of heterosporous pteridophytes among the following :
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Frequency of recombination between gene pairs on same chromosome as a measure of the distance between genes to map thei
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What is the function of tassels in the corn cob?
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Identify the correct statements : A. Detrivores perform fragmentation. B. The humus is further degraded by some microbes
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Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : La
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The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?
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Which of the following stages of meiosis involves division of centromere?
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During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out
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Family Fabaceae differs from Solanaceae and Liliaceae. With respect to the stamens, pick out the characteristics specif
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Large, colourful, fragrant flowers with nectar are seen in
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Spraying of which of the following phytohormone on juvenile conifers helps hastening the maturity period, that leads ea
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Axile placentation is observed in
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Among eukaryotes, replication of DNA takes place in :
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How many ATP and NADPH2 are required for the synthesis of one molecule of Glucose during Calvin cycle?
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In gene gun method used to introduce alien DNA into host cells, microparticles of ________ metal are used.
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The thickness of ozone in a column of air in the atmosphere is measured in terms of :
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Unequivocal proof that DNA is the genetic material was first proposed by
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In the equation GPP $$-$$ R = NPP GPP is Gross Primary Productivity NPP is Net Primary Productivity R here is __________
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What is the role of RNA polymerase III in the process of transcription in Eukaryotes?
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Which micronutrient is required for splitting of water molecule during photosynthesis?
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In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :
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The phenomenon of pleiotropism refers to
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Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : AT
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Cellulose does not form blue colour with Iodine because
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Which hormone promotes internode/petiole elongation in deep water rice?
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Expressed Sequence Tags (ESTs) refers to
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Given below are two statements : Statement I : The forces generated transpiration can lift a xylem-sized column of water
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Upon exposure to UV radiation, DNA stained with ethidium bromide will show
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The historic Convention on Biological Diversity, ‘The Earth Summit’ was held in Rio de Janeiro in the year
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The reaction centre in PS II has an absorption maxima at
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Given below are two statements : One labelled as Assertion A and the other labelled as Reason R: Assertion A : The first
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In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be
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Given below are two statements : Statement I : Endarch and exarch are the terms often used for describing the position o
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Identify the correct statements: A. Lenticels are the lens-shaped openings permitting the exchange of gases. B. Bark for
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Match List I with List II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:so
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Match List I with List II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Which of the following statements are correct about Klinefelter’s Syndrome? A. This disorder was first described by Lang
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Given below are two statements: Statement I : Gause’s ‘Competitive Exclusion Principle’ states that two closely related
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How many different proteins does the ribosome consist of?
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Which of the following combinations is required for chemiosmosis?
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Which one of the following statements is NOT correct?
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Match List I with List II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Main steps in the formation of Recombinant DNA are given below. Arrange these steps in a correct sequence. A. Insertion
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Match List I with List II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Match List I with List II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Given below are two statements : One labelled as Assertion A and the other labelled as Reason R : Assertion A : In gymno
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Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : A
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Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of
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Given below are two statements: Statement I: A protein is imagined as a line, the left end represented by first amino ac
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Radial symmetry is NOT found in adults of phylum ______.
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Which of the following statements are correct regarding female reproductive cycle? A. In non-primate mammals cyclical ch
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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Neph
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Match List I with List II with respect to human eye. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-co
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Which of the following are NOT considered as the part of endomembrane system? A. Mitochondria B. Endoplasmic reticulum C
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Broad palm with single palm crease is visible in a person suffering from-
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Which one of the following common sexually transmitted diseases is completely curable when detected early and treated pr
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Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:soli
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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Endom
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Which of the following is not a cloning vector?
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Given below are two statements: Statement I : Ligaments are dense irregular tissue. Statement II : Cartilage is dense re
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Which of the following functions is carried out by cytoskeleton in a cell?
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Which of the following statements is correct?
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Which one of the following symbols represents mating between relatives in human pedigree analysis?
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Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by
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Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatmen
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Given below are two statements : Statement I : Low temperature preserves the enzyme in a temporarily inactive state wher
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Given below are two statements: Statement I: Vas deferens receives a duct from seminal vesicle and opens into urethra as
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In which blood corpuscles, the HIV undergoes replication and produces progeny viruses?
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Vital capacity of lung is ________.
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Select the correct group/set of Australian Marsupials exhibiting adaptive radiation.
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Given below are two statements: one is labelled as Assertion A and other is labelled as Reason R. Assertion A : Amniocen
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Given below are two statements: Statement I: RNA mutates at a faster rate. Statement II: Viruses having RNA genome and s
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Given below are two statements: Statement I: Electrostatic precipitator is most widely used in thermal power plant. Stat
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Given below are two statements: Statement I: In prokaryotes, the positively charged DNA is held with some negatively cha
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Which of the following statements are correct? A. Basophils are most abundant cells of the total WBCs B. Basophils secre
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Select the correct statements. A. Tetrad formation is seen during Leptotene. B. During Anaphase, the centromeres split a
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In cockroach, excretion is brought about by - A. Phallic gland B. Urecose gland C. Nephrocytes D. Fat body E. Collateria
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Given below are two statements: Statement I : During G0 phase of cell cycle, the cell is metabolically inactive. Stateme
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Select the correct statements with reference to chordates. A. Presence of a mid-dorsal, solid and double nerve cord. B.
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Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Which one of the following is the sequence on corresponding coding strand, if the sequence on mRNA formed is as follows
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Which of the following is characteristic feature of cockroach regarding sexual dimorphism?
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Which of the following statements are correct regarding skeletal muscle? A. Muscle bundles are held together by collagen
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The unique mammalian characteristics are :
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Which one of the following is NOT an advantage of inbreeding?
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The parts of human brain that helps in regulation of sexual behaviour, expression of excitement, pleasure, rage, fear e
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Which of the following statements are correct? A. An excessive loss of body fluid from the body switches off osmorecepto
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Which of the following are NOT under the control of thyroid hormone? A. Maintenance of water and electrolyte balance B.
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Chemistry

Given below are two statements : one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\math
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The conductivity of centimolar solution of $$\mathrm{KCl}$$ at $$25^{\circ} \mathrm{C}$$ is $$0.0210 ~\mathrm{ohm}^{-1}
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For a certain reaction, the rate $$=\mathrm{k}[\mathrm{A}]^{2}[\mathrm{~B}]$$, when the initial concentration of A is tr
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Identify product $$(\mathrm{A})$$ is the following reaction :
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Which one is an example of heterogenous catalysis?
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Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Hel
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Amongst the following, the total number of species NOT having eight electrons around central atom in its outer most shel
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The correct order of energies of molecular orbitals of $$\mathrm{N}_{2}$$ molecule, is
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Match List I with List II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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The number of $$\sigma$$ bonds, $$\pi$$ bonds and lone pair of electrons in pyridine, respectively are:
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The element expected to form largest ion to achieve the nearest noble gas configuration is
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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : A re
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Consider the following reaction and identify the product (P).
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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A : In e
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Which amongst the following options is correct graphical representation of Boyle's law?
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In Lassaigne's extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with
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Identify the product in the following reaction:
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Select the correct Statements from the following : A. Atoms of all elements are composed of two fundamental particles. B
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A compound is formed by two elements A and B. The elements B forms cubic close packed structure and atoms of A occupy $$
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Given below are two statements: Statement I : A unit formed by the attachment of a base to 1' position of sugar is known
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Which amongst the following molecules on polymerization produces neoprene?
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Taking stability as the factor, which one of the following represents correct relationship?
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Some tranquilizers are listed below. Which one from the following belongs to barbiturates?
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Which of the following statements are NOT correct? A. Hydrogen is used to reduce heavy metal oxides to metals. B. Heavy
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Intermolecular forces are forces of attraction and repulsion between interacting particles that will include: A. dipole
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Amongst the given options which of the following molecules/ion acts as a Lewis acid?
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The right option for the mass of $$\mathrm{CO}_{2}$$ produced by heating $$20 \mathrm{~g}$$ of $$20 \%$$ pure limestone
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The relation between $$\mathrm{n}_{\mathrm{m}},\left(\mathrm{n}_{\mathrm{m}}=\right.$$ the number of permissible values
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The stability of $$\mathrm{Cu}^{2+}$$ is more than $$\mathrm{Cu}^{+}$$ salts in aqueous solution due to -
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Which one of the following statements is correct?
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Which of the following reactions will NOT give primary amine as the product?
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The given compound is an example of _________.
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Complete the following reaction: [C] is _______.
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Homoleptic complex from the following complexes is :
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Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in
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Consider the following reaction Identify products A and B :-
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Which amongst the following will be most readily dehydrated under acidic conditions?
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The equilibrium concentrations of the species in the reaction $$\mathrm{A}+\mathrm{B} \rightleftharpoons \mathrm{C}+\mat
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Given below are two statements: Statement I : The nutrient deficient water bodies lead to eutrophication. Statement II :
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Which amongst the following options is the correct relation between change in enthalpy and change in internal energy?
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Match List I with List II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol
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Identify the major product obtained in the following reaction:
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Pumice stone is an example of -
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The reaction that does NOT take place in blast furnace between 900 K to 1500 K temperature range during extraction of
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Which of the following statements are INCORRECT? A. All the transition metals except scandium form MO oxides which are i
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Consider the following compounds/species: The number of compounds/species which obey Huckel's rule is ___________.
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What fraction of one edge centred octahedral void lies in one unit cell of fcc?
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Which complex compound is most stable?
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On balancing the given redox reaction, $$\mathrm{aCr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{bSO}_{3}^{2-}(\mathrm{aq})+\mathrm
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Identify the final product [D] obtained in the following sequence of reactions.
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Physics

In a series LCR circuit, the inductance $$L$$ is $$10 ~\mathrm{mH}$$, capacitance $$C$$ is $$1 ~\mu \mathrm{F}$$ and res
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The magnitude and direction of the current in the following circuit is :-
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If the galvanometer $$G$$ does not show any deflection in the circuit shown, the value of $$R$$ is given by:
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The temperature of a gas is $$-50^{\circ} \mathrm{C}$$. To what temperature the gas should be heated so that the rms spe
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The ratio of radius of gyration of a solid sphere of mass $$M$$ and radius $$R$$ about its own axis to the radius of gyr
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A Carnot engine has an efficiency of $$50 \%$$ when its source is at a temperature $$327^{\circ} \mathrm{C}$$. The tempe
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A bullet is fired from a gun at the speed of $$280 \mathrm{~ms}^{-1}$$ in the direction $$30^{\circ}$$ above the horizon
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An electric dipole is placed at an angle of $$30^{\circ}$$ with an electric field of intensity $$2 \times 10^{5} \mathrm
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Given below are two statements: Statement I : Photovoltaic devices can convert optical radiation into electricity. State
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The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are :
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The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length
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The net magnetic flux through any closed surface is :
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The work functions of Caesium $$(\mathrm{Cs})$$, potassium $$(\mathrm{K})$$ and Sodium (Na) are $$2.14 ~\mathrm{eV}, 2.3
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The minimum wavelength of $$X$$-rays produced by an electron accelerated through a potential difference of $$V$$ volts i
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A $$12 \mathrm{~V}, 60 \mathrm{~W}$$ lamp is connected to the secondary of a step down transformer, whose primary is con
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Light travels a distance $$\mathrm{x}$$ in time $$t_{1}$$ in air and $$10 \mathrm{x}$$ in time $$t_{2}$$ in another dens
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A metal wire has mass $$(0.4 \pm 0.002) ~\mathrm{g}$$, radius $$(0.3 \pm 0.001) ~\mathrm{mm}$$ and length $$(5 \pm 0.02)
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For Young's double slit experiment, two statements are given below : Statement I : If screen is moved away from the plan
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The half life of a radioactive substance is 20 minutes. In how much time, the activity of substance drops to $$\left(\fr
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The equivalent capacitance of the system shown in the following circuit is:
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Resistance of a carbon resistor determined from colour codes is $$(22000 \pm 5 \%) \Omega$$. The colour of third band mu
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An ac source is connected to a capacitor C. Due to decrease in its operating frequency
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A vehicle travels half the distance with speed $$v$$ and the remaining distance with speed $$2 v$$. Its average speed is
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The amount of energy required to form a soap bubble of radius $$2 \mathrm{~cm}$$ from a soap solution is nearly: (surfac
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The venturi-meter works on :
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In hydrogen spectrum, the shortest wavelength in the Balmer series is $$\lambda$$. The shortest wavelength in the Bracke
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The potential energy of a long spring when stretched by $$2 \mathrm{~cm}$$ is U. If the spring is stretched by $$8 \math
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A full wave rectifier circuit consists of two p-n junction diodes, a centre-tapped transformer, capacitor and a load res
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The magnetic energy stored in an inductor of inductance $$4 ~\mu \mathrm{H}$$ carrying a current of $$2 \mathrm{~A}$$ is
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If $$\oint_\limits{s} \vec{E} \cdot \overrightarrow{d S}=0$$ over a surface, then:
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A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force th
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Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $$W$$ attached at its free end. The l
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The angular acceleration of a body, moving along the circumference of a circle, is :
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In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a freq
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Two bodies of mass $$m$$ and $$9 m$$ are placed at a distance $$R$$. The gravitational potential on the line joining the
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In the figure shown here, what is the equivalent focal length of the combination of lenses (Assume that all layers are t
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Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The
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A satellite is orbiting just above the surface of the earth with period $$T$$. If $$d$$ is the density of the earth and
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The $$x$$ - $$t$$ graph of a particle performing simple harmonic motion is shown in the figure. The acceleration of the
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For the following logic circuit, the truth table is:
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A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards wit
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Two thin lenses are of same focal lengths $$(f)$$, but one is convex and the other one is concave. When they are placed
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A wire carrying a current $$I$$ along the positive $$\mathrm{x}$$-axis has length $$L$$. It is kept in a magnetic field
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A bullet from a gun is fired on a rectangular wooden block with velocity $$u$$. When bullet travels $$24 \mathrm{~cm}$$
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The resistance of platinum wire at $$0^{\circ} \mathrm{C}$$ is $$2 ~\Omega$$ and $$6.8 ~\Omega$$ at $$80^{\circ} \mathrm
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An electric dipole is placed as shown in the figure. The electric potential (in 102 V) at point P due to the dipole is
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10 resistors, each of resistance $$\mathrm{R}$$ are connected in series to a battery of emf $$E$$ and negligible interna
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A very long conducting wire is bent in a semi-circular shape from $$A$$ to $$B$$ as shown in figure. The magnetic field
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The radius of inner most orbit of hydrogen atom is $$5.3 \times 10^{-11} \mathrm{~m}$$. What is the radius of third allo
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The net impedance of circuit (as shown in figure) will be :
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