NEET 2018
Paper was held on
Sun, May 6, 2018 10:00 AM
Biology
Match the items given in column I with those in column II and select the correct option given below.
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Which among the following is not a prokaryote?
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Select the wrong statement.
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Oxygen is not produced during photosynthesis by
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After karyogamy followed by meiosis, spores are produced exogenously in
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Ciliates differ from all other protozoans in
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Which of the following statements is correct?
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Which one is wrongly matched?
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Which of the following organisms are known as chief producers in the oceans?
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Which of the following animals does not undergo metamorphosis?
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Identify the vertebrate group of animals characterised by crop and gizzard in its digestive system.
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Which one of these animals is not a homeotherm?
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Sweet potato is a modified
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Stomata in grass leaf are
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Secondary xylem and phloem in dicot stem are produced by
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Casparian strips occur in
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Which of the following is true for nucleolus?
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Which of the following features is used to identify a male cockroach from a female cockroach?
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The Golgi complex participates in
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Plants having little or no secondary growth are
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Which of the following events does not occur
in rough endoplasmic reticulum?
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Select the incorrect match.
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The two functional groups characteristic of
sugars are
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The stage during which separation of the paired
homologous chromosomes begins is
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Stomatal movement is not affected by
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Which of the following elements is responsible
for maintaining turgor in cells?
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In which of the following forms is iron absorbed
by plants?
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Which of the following terms describe human
dentition?
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Which of the following is not a product of light
reaction of photosynthesis?
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Match the items given in column I with those in
column II and select the correct option given
below.
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Match the items given in column I with those in
column II and select the correct option given
below.
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Which of the following gastric cells indirectly
help in erythropoiesis?
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Match the items given in column I with those in
column II and select the correct option given below.
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Match the items given in column I with those in
column II and select the correct option given
below.
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Match the items given in column I with those in
column II and select the correct option given
below.
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Which of the following options correctly
represents the lung conditions in asthma and
emphysema, respectively?
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Which of the following is an occupational
respiratory disorder?
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Which of these statements is incorrect?
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What is the role of NAD+ in cellular respiration?
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Calcium is important in skeletal muscle
contraction because it
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Nissl’s bodies are mainly composed of
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Which of the following structures or regions is
incorrectly paired with its functions?
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The transparent lens in the human eye is held in
its place by
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Which of the following hormones can play a
significant role in osteoporosis?
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Which of the following is an amino acid derived
hormone?
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Offsets are produced by
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Which of the following flowers only once in
its lifetime?
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Which of the following has proved helpful in
preserving pollen as fossils?
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The difference between spermiogenesis and
spermiation is
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Winged pollen grains are present in
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Double fertilization is
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Hormones secreted by the placenta to maintain
pregnancy are
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The amnion of mammalian embryo is derived
from
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Match the items given in column I with those in
column II and select the correct option given
below.
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The contraceptive ‘Saheli’
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A woman has an X-linked condition on one of
her X chromosomes. This chromosome can be
inherited by
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Which of the following pairs is wrongly matched?
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Select the correct match :
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Which of the following characteristics represent 'Inheritance of blood groups' in humans?
a. Dominance
b. Co-dominance
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The experimental proof for semi-conservative
replication of DNA was first shown in a
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Select the correct statement :
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Select the correct match :
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Many ribosomes may associate with a single
mRNA to form multiple copies of a polypeptide
simultaneously. Such strings of
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Among the following sets of examples for
divergent evolution, select the incorrect option.
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The similarity of bone structure in the forelimbs
of many vertebrates is an example of
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All of the following are part of an operon except
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AGGTATCGCAT is a sequence from the coding
strand of a gene. What will be the corresponding
sequence of the transcribed m
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Which of the following is not an autoimmune
disease?
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According to Hugo de Vries, the mechanism of
evolution is
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In which disease does mosquito transmitted
pathogen cause chronic inflammation of
lymphatic vessels?
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Conversion of milk to curd improves its
nutritional value by increasing the amount of
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Which part of poppy plant is used to obtain the
drug “smack”?
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Which one of the following population
interactions is widely used in medical science
for the production of antibiotics?
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Niche is
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Natality refers to
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In India, the organisation responsible for
assessing the safety of introducing genetically
modified organisms for public
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Which of the following is commonly used as a
vector for introducing a DNA fragment in
human lymphocytes?
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Pneumatophores occur in
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Use of bioresources by multinational
companies and organisations without
authorisation from the concerned country and
it
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A 'new' variety of rice was patented by a
foreign company, though such varieties have
been present in India for a long t
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The correct order of steps in Polymerase Chain
Reaction (PCR) is
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Which one of the following plants shows a
very close relationship with a species of moth,
where none of the two can comp
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Pollen grains can be stored for several years
in liquid nitrogen having a temperature of
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All of the following are included in ‘ex-situ
conservation’ except
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What type of ecological pyramid would be
obtained with the following data?
Secondary consumer : 120 g
Primary consumer :
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In a growing population of a country,
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World Ozone Day is celebrated on
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In stratosphere, which of the following elements
acts as a catalyst in degradation of ozone and
release of molecular oxy
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Which of the following is a secondary pollutant?
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Match the items given in column I with those in
column II and select the correct option given
below.
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Chemistry
A mixture of 2.3 g formic acid and 4.5 g oxalic
acid is treated with conc. H2SO4
. The evolved
gaseous mixture is passed
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Which one is a wrong statement?
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In which case is number of molecules of water
maximum?
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Consider the following species : CN+
, CN–
, NO
and CN. Which one of these will have the
highest bond order?
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Which of the following oxides is most acidic in
nature?
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The correct order of atomic radii in group 13
elements is
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The correction factor ‘a’ to the ideal gas
equation corresponds to
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The bond dissociation energies of X2
, Y2
and
XY are in the ratio of 1 : 0.5 : 1. $$\Delta $$H for the
formation of XY
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In the structure of ClF3
, the number of lone
pairs of electrons on central atom ‘Cl’ is
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Given van der Waals’ constant for NH3
, H2,
O2
and CO2
are respectively 4.17, 0.244, 1.36
and 3.59, which one of the f
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Following solutions were prepared by mixing
different volumes of NaOH and HCl of different
concentrations :
A. 60 mL $${
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The solubility of BaSO4
in water is
2.42 × 10–3 g L–1 at 298 K. The value of its
solubility product (Ksp) will be (Give
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Which one of the following conditions will
favour maximum formation of the product in
the reaction
A2(g)
+ B2(g) ⇌ X2(g
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For the redox reaction,
MnO4–
+ C2O4
2– + H+ $$ \to $$ Mn2+ + CO2
+ H2O
The correct coefficients of the reactants for
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Consider the change in oxidation state of
bromine corresponding to different emf values
as shown in the given diagram :
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The correct order of N-compounds in its
decreasing order of oxidation states is
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Among CaH2
, BeH2
, BaH2
, the order of ionic
character is
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Which of the following is correct with respect
to – I effect of the substituents? (R = alkyl)
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Magnesium reacts with an element (X) to form
an ionic compound. If the ground state
electronic configuration of (X) is 1
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Which one of the following elements is unable
to form MF63– ion?
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Which of the following molecules represents
the order of hybridisation sp2
, sp2
, sp, sp from
left to right atoms?
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Which of the following carbocations is
expected to be most stable?
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Which oxide of nitrogen is not a common
pollutant introduced into the atmosphere both
due to natural and human activity?
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Hydrocarbon (A) reacts with bromine by
substitution to form an alkyl bromide which by
Wurtz reaction is converted to gas
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Iron exhibits bcc structure at room temperature.
Above 900°C, it transforms to fcc structure. The
ratio of density of ir
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The correct difference between first and
second order reactions is that
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On which of the following properties does the
coagulating power of an ion depend?
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When initial concentration of the reactant is
doubled, the half-life period of a zero order
reaction
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Considering Ellingham diagram, which of the
following metals can be used to reduce
alumina?
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Which of the following statements is not true
for halogens?
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Which one of the following ions exhibits d-d
transition and paramagnetism as well?
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Match the metal ions given in Column I with
the spin magnetic moments of the ions given
in Column II and assign the corr
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The geometry and magnetic behaviour of the
complex [Ni(CO)4] are
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The type of isomerism shown by the complex
[CoCl2(en)2] is
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Iron carbonyl, Fe(CO)5
is
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The compound A on treatment with Na gives
B, and with PCl5
gives C. B and C react together
to give diethyl ether. A, B
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In the reaction,
the electrophile involved is
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The compound C7H8
undergoes the following
reactions :
The product ‘C’ is
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Compound A, C8H10O, is found to react with
NaOI (produced by reacting Y with NaOH) and
yields a yellow precipitate with
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Identify the major products P, Q and R in the
following sequence of reactions :
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Carboxylic acids have higher boiling points
than aldehydes, ketones and even alcohols of
comparable molecular mass. It i
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Nitration of aniline in strong acidic medium
also gives m-nitroaniline because
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Which of the following compounds can form a
zwitter ion?
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The difference between amylose and amylopectin
is
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Regarding cross-linked or network polymers,
which of the following statements is incorrect?
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Physics
A student measured the diameter of a small
steel ball using a screw gauge of least count
0.001 cm. The main scale readin
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Which one of the following statements is
incorrect?
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A moving block having mass m, collides with
another stationary block having mass 4m. The
lighter block comes to rest aft
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A block of mass m is placed on a smooth inclined
wedge ABC of inclination q as shown in the
figure. The wedge is given a
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A body initially at rest
and sliding along a
frictionless track from
a height h (as shown
in the figure)
just completes
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A solid sphere is in rolling motion. In rolling
motion a body possesses translational kinetic
energy (Kt) as well as rot
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A solid sphere is rotating freely about its
symmetry axis in free space. The radius of
the sphere is increased keeping i
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The efficiency of an ideal heat engine working
between the freezing point and boiling point
of water, is
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The kinetic energies of
a planet in an elliptical
orbit about the Sun, at
positions A, B and C are
KA, KB and KC, respec
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A sample of 0.1 g of water at 100°C and normal
pressure (1.013 × 105
N m–2) requires 54 cal
of heat energy to convert t
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The volume (V) of a monatomic
gas varies with its temperature
(T), as shown in the graph. The
ratio of work done by the
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Two wires are made of the same material and
have the same volume. The first wire has
cross-sectional area A and the seco
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The power radiated by a black body is P and it
radiates maximum energy at wavelength, $$\lambda $$0
. If
the temperature
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Three objects, A : (a solid sphere), B : (a thin
circular disk) and C : (a circular ring), each
have the same mass M and
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The moment of the force, $$\overrightarrow F = 4\widehat i + 5\widehat j - 6\widehat k$$ at
(2, 0, –3), about the point
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A small sphere of radius ‘r’ falls from rest in a
viscous liquid. As a result, heat is produced
due to viscous force. Th
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If the mass of the Sun were ten times smaller
and the universal gravitational constant were
ten times larger in magnitud
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The fundamental frequency in an open organ
pipe is equal to the third harmonic of a closed
organ pipe. If the length of
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A pendulum is hung from the roof of a
sufficiently high building and is moving freely
to and fro like a simple harmonic
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The electrostatic force between the metal plates
of an isolated parallel plate capacitor C having
a charge Q and area A,
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At what temperature will the rms speed of
oxygen molecules become just sufficient for
escaping from the Earth’s atmosphe
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An electron falls from rest through a vertical
distance h in a uniform and vertically upward
directed electric field E.
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A tuning fork is used to produce resonance in
a glass tube. The length of the air column in
this tube can be adjusted by
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A toy car with charge q moves on a frictionless
horizontal plane surface under the influence of
a uniform electric field
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A battery consists of a variable number n of
identical cells (having internal resistance r each)
which are connected in
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A carbon resistor of (47 $$ \pm $$ 4.7) k$$\Omega $$ is to be marked
with rings of different colours for its identificat
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A set of n equal resistors, of value R each, are
connected in series to a battery of emf E and
internal resistance R. Th
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A metallic rod of mass per unit length
0.5 kg m–1 is lying horizontally on a smooth
inclined plane which makes an angle
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A thin diamagnetic rod is placed vertically
between the poles of an electromagnet. When
the current in the electromagnet
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The magnetic potential energy stored in a
certain inductor is 25 mJ, when the current
in the inductor is 60 mA. This ind
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Current sensitivity of a moving coil
galvanometer is 5 div/mA and its voltage
sensitivity (angular deflection per unit v
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An EM wave is propagating in a medium with
a velocity $$\overrightarrow v = v\widehat i$$. The instantaneous
oscillatin
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The refractive index of the material of a prism
is $$\sqrt 2 $$ and the angle of the prism is 30°. One
of the two refrac
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An inductor 20 mH, a capacitor 100 $$\mu $$F and
a resistor 50 $$\Omega $$ are connected in series across
a source of em
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An object is placed at a distance of 40 cm
from a concave mirror of focal length 15 cm.
If the object is displaced throu
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In Young’s double slit experiment the
separation d between the slits is 2 mm, the
wavelength $$\lambda $$ of the light u
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Unpolarised light is incident from air on a
plane surface of a material of refractive index
$$\mu $$. At a particular an
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An astronomical refracting telescope will have
large angular magnification and high angular
resolution, when it has an o
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An electron of mass m with an initial velocity
$$\overrightarrow v = {v_0}\widehat i$$ (v0 > 0)
enters an electric
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When the light of frequency 2$${\upsilon _0}$$
(where $${\upsilon _0}$$
is
threshold frequency), is incident on a meta
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In the circuit shown in the figure, the input
voltage Vi
is 20 V, VBE = 0 and VCE = 0. The
values of IB
, IC
and $$\bet
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In the combination of the following gates
the output Y can be written in terms of inputs
A and B as
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The ratio of kinetic energy to the total energy
of an electron in a Bohr orbit of the hydrogen
atom, is
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For a radioactive material, half-life is 10
minutes. If initially there are 600 number of
nuclei, the time taken (in min
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In a p-n junction diode, change in temperature
due to heating
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