Which of the following is correct?

Chimeric DNA is

Which of the following are homosporous?

What is the site of $$C_3$$ cycle in $$C_3$$ and $$C_4$$ plants?

Which of the following represent zygomorphic symmetry?

In Ti-plasmid, which of the following is removed?

Which statement is correct?

The genetic codes of arginine are

King of spices is

ATP formation occurs through which of the following?

What are the requirements in tissue culture?

Oxytocin and ADH are produced by hypothalamus and released from

Characteristic of female cockroach

Which of the following linkage is found in sucrose?

Which cell is found in mucus secreting organs?

Glucose on reacting with Benedict's solution may give the following precipitates except

Cervical vertebrae differ from other vertebrae in having

Mark the incorrect statement for inbreeding.

Animal of which phylum have hooks and suckers and are endoparasite on other animals?

Select the wrong statement from the following.

Protein on reaction with which yields Ruhemann's purple?

Gene library or DNA library has the collection of

Which of the following are all nucleotides?

Match the following columns and choose the correct option from the codes given below.

Match the following columns and choose the correct option from the codes given below.

Which of the following is incorrect?

The process of removal of anther from the flower bud before it dehisces is called as

Match the following columns and choose the correct option from the codes given below.

Match the following columns and choose the correct option from the codes given below.

Match the following columns and choose the correct option from the codes given below.

What is the function of Bowman's capsule and glomerulus?

Virus free plants can be formed by

Immunity tolerance developed by

Hairy root disease of dicot plants is caused by

Choose the correct option.

Identify the given diagram of tissue performing secretion and absorption.

Identify A, B and C

Select the correct option w.r.t. age pyramids.

Blood group of the father is ‘A’ and blood group of mother is ‘B’. Then predict the blood group of the progeny

If mitochondria is absent in mature RBC, what will be the source of energy?

Assertion : Cholecystokinin is released by duodenum.

Reason : It activates pepsinogen and bile juice.

Assertion : SA node malfunctioning leads to disturbance of heart rate.

Reason : SA node is the pacemaker of heart producing electric impulse for heart contraction.

Assertion : Selaginella and Salvinia are homosporous.

Reason : In pteridophyte, Lycopodium is precursor of seed habit.

Assertion : Gibberellin is useful in early seed production in conifers.

Reason : Ethephon is responsible for early ripening in tomato and apple.

Assertion : Heterospory and retention of female gametophyte are responsible for origin of seed habit in Selaginella.

Reason : Psilotum is a living fossil.

Assertion : Type-I diabetes is caused by destruction of $$\beta$$-cells of islets of Langerhans.

Reason : Insulin can be taken as pills.

Assertion : Pituitary gland releases a hormone which is helpful in childbirth.

Reason : Pituitary gland releases vasopressin and anti-diuretic hormone which helps in childbirth.

Assertion : Gastrin is a hormone that is released from the gastrointestinal tract and helps in digestion.

Reason : It promotes secretion of HCl and trypsinogen.

Assertion : Biofortified crop is a source of higher proteins, minerals and healthier fats.

Reason : Azolla is biofertiliser.

Assertion : Respiratory pathway is considered as an amphibolic pathway.

Reason : It involves both anabolism and catabolism.

Assertion : Down’s syndrome, Klinefelter’s syndrome and Turner’s syndrome are chromosomal disorders.

Reason : In Klinefelter’s syndrome females are sterile.

Assertion : Deficiency of an element may lead to scurvy.

Reason : Daily requirement of ascorbic acid is 5 mg/day.

Assertion : Cannabinoids are drugs of abuse.

Reason : They affect cardiovascular system and central nervous system activity.

Assertion : Malpighian tubules are excretory organs in most of the insects.

Reason : These help in excretion of urea and creatinine.

Assertion : In commensalism, one organism is benefitted and other is unaffected.

Reason : Cattle egret bird and cattle is an example of commensalism.

Assertion : In $$\mathrm{C}_3$$ cycle, the first stable compound is $$3 \mathrm{C}$$ compound.

Reason : In $$\mathrm{C}_4$$ plants, Calvin cycle is absent.

Assertion : In eukaryotes, transcription occurs in nucleus.

Reason : In bacteria, transcription and translation occurs in cytoplasm.

Assertion : Biofortification is used to increase nutrient value of crops.

Reason : Meristem culture is used to obtain virus resistant plants.

Assertion : Calcium required for skeletal muscle contraction.

Reason : Calcium influx releases acetylcholine at neuromuscular junction.

Assertion : Parthenocarpy involves the formation of seedless fruit.

Reason : Apomixis occurs without fertilisation.

Out of $$\mathrm{BeF}_2, \mathrm{MgF}_2, \mathrm{CaF}_2, \mathrm{SrF}_2$$ which has maximum solubility?

Which of the following statement is correct for oleum?

Which of the following can react with $$\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$$ ?

Which element can have oxidation state from 4 to 6?

Order of acidic nature

The vapour pressure of pure $$\mathrm{CHCl}_3$$ and $$\mathrm{CH}_2 \mathrm{Cl}_2$$ are 200 and $$41.5 \mathrm{~atm}$$ respectively. The weight of $$\mathrm{CHCl}_3$$ and $$\mathrm{CH}_2 \mathrm{Cl}_2$$ are respectively $$11.9 \mathrm{~g}$$ and $$17 \mathrm{~g}$$. The vapour pressure of solution will be

Correct order of bond dissociation energy

The tetrahedral voids are present in 0.5 mole of hcp crystal structure

Find out time period of Ist order reaction. When reaction complete $$2 / 3 \mathrm{rd}$$. If the value of rate constant is $$4.3 \times 10^{-4}$$

Compare stability of free radicals

(I) $$\mathrm{CH}_3-\mathop C\limits^ \bullet H-\mathrm{CH}_3$$

(II)

(III) $$\mathop C\limits^ \bullet {H_2}-\mathrm{CH}\left(\mathrm{CH}_3\right)_2$$

(IV) $$\mathop C\limits^ \bullet {H_2}-\mathrm{CH}_3$$

Find out the products of reaction

If boiling point of water is $$100^{\circ} \mathrm{C}$$. How much gram of $$\mathrm{NaCl}$$ is added in $$500 \mathrm{~g}$$ of water to increase its boiling point of water by approx $$1^{\circ} \mathrm{C}\left(K_b\right)_{\mathrm{H}_2 \mathrm{O}}=0.52 \mathrm{~K} \times \mathrm{kg} /$$ mole.

(i) $$\mathrm{F}_3 \mathrm{C}-\mathrm{COOH}$$, (ii) $$\mathrm{CH}_3 \mathrm{COOH}$$, (iii) $$\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}$$, (iv) $$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{COOH}$$ Correct order of $$\mathrm{p} K_a$$ value is

The correct relation is

$$\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$$ is a

Find empirical formula of the compound if $$M=68 \%$$ (atomic mass $$=34$$ ) and remaining $$32 \%$$ oxygen.

A bulb is emitted electromagnetic radiation of $$660 \mathrm{~nm}$$ wavelength. The total energy of radiation is $$3 \times 10^{-18} \mathrm{~J}$$. The number of emitted photon will be

$$\left(h=6.6 \times 10^{-34}\right) \mathrm{J} \times \mathrm{s}, c=3 \times 10^8 \mathrm{~m} / \mathrm{s}$$

Yellow colour of chlorine water fades because of

Which have melting point below $$500^{\circ} \mathrm{C}$$ ?

Which of the following inert gas participate in chemical reaction?

Which of the following is correct order of packing efficiency?

Cell notation, $$\begin{gathered} M\left|M^{2+} \| M^{2+}\right| M. \\ 0.01 \quad 0.0001 \end{gathered}$$ If value of $$E^{\circ}{ }_{\text {cell }} \text { is } 4 \text { volt ( Given } \frac{R T}{F} \text { in } 10=0.06 \text { ) }$$

Which of the following has maximum iron content?

$$\mathrm{pH}$$ of a salt solution of weak acid $$(\mathrm{p} K_a=4)$$ and weak base $$(\mathrm{p} K_b=5)$$ at $$25^{\circ}$$ is

Correct increasing order for the wavelength of absorption in the visible region for the complexes of $$\mathrm{Co}^{3+}$$ is

At $$25^{\circ} \mathrm{C}, 1$$ mole of butane is heated then $$\mathrm{CO}_2$$ and $$\mathrm{H}_2 \mathrm{O}$$ liquid is formed work done is

What is the activation energy $$(\mathrm{kJ} / \mathrm{mol})$$ for a reaction if its rate constant doubles when the temperature is raised from $$300 \mathrm{~K}$$ to $$400 \mathrm{~K}$$ of these $$(R=8.314 \mathrm{~Jmol}^{-1} \mathrm{~K}^{-1})$$

$$\mathrm{H}_2 \mathrm{O}_2$$ is obtained by which of the following?

Which has least covalent radius?

Which give coloured carbonate precipitate?

Which of the following, number of lone pair at central atom zero $$\mathrm{XeO}_3, \mathrm{XeO}_2 \mathrm{~F}_2, \mathrm{XeO}_4, \mathrm{XeO}_3 \mathrm{~F}_2, \mathrm{XeF}_6$$ ?

Write IUPAC name of following compound.

Correct order of basic strength is

Which is least soluble?

Correct order for reaction with alcoholic KOH

Which is most stable conformer of ethan-1, 2-diol?

Which pair of elements has maximum electronegativity difference?

Correct order of electrophillic substitution reaction is

Which of the following complex is optically inactive?

Match the following columns.

Correct set of answer :

Assertion : The chemical properties of different isotope are same.

Reason : Isotopes having same number of neutron.

Assertion : Out of $$\mathrm{CrO}_3$$ and $$\mathrm{Al}_2 \mathrm{O}_3, \mathrm{CrO}_3$$ having lower melting point than $$\mathrm{Al}_2 \mathrm{O}_3$$.

Reason : Oxidation state of $$\mathrm{Cr}$$ in $$\mathrm{CrO}_3$$ is high.

Assertion : $$U$$ is state function.

Reason : $$T$$ is an intensive property.

Assertion : $$\mathrm{BO}_3^{-3}$$ and $$\mathrm{SO}_3^{-2}$$ are not isostructural.

Reason : In $$\mathrm{SO}_3^{2-}$$ sulphur has one lone pair of electron.

Assertion : Tert-butyl methyl ether react with $$\mathrm{HBr}$$ to form tert butyl, $$\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Br}$$ and $$\mathrm{CH}_3-\mathrm{OH}$$, methanal.

Reason : It follows $$\mathrm{S}_{\mathrm{N}} 1$$ mechanism.

Assertion : A spherical water drops become flaton flatter surface.

Reason : It become flat due to gravity.

Assertion : Two sugar units joined by 1, 2-glycosidic bond in sucrose.

Reason : It contains $$\mathrm{C}_1$$-glucose and $$\mathrm{C}_2$$-fructose glycosidic bond.

Assertion : $$\mathrm{S}_2 \mathrm{O}_7^{2-}$$ and $$\mathrm{Cr}_2 \mathrm{O}_7^{2-}$$ both exist.

Reason : Both have same valence electrons.

Assertion : ZnO becomes yellow when it is heated.

Reason : The anionic sites occupied by unpaired electrons (due to F-centres).

Assertion : $$\mathrm{Yb}^{2+}$$ is more stable in compare to $$\mathrm{Gd}^{+2}$$.

Reason : The electronic configuration of GD is $$[\mathrm{Xe}] 4 f^7 5 d^2 6 s^2$$.

Assertion : Glucose does not gives 2, 4- DNP test.

Reason : Glucose exists in cyclic hemiacetal form.

Assertion : Phenol reacts with $$\mathrm{CH}_3 \mathrm{I}$$ in presence of $$\mathrm{NaOH}$$ to form methoxybenzene.

Reason : Phenoxide is better nucleophile than phenol.

Assertion : Nylon-6 is condensation polymer.

Reason : It is polymer of caprolactum.

Assertion : Tert-butyl amine can be formed by Gabriel phthalimide synthesis.

Reason : It follow $$\mathrm{S}_{\mathrm{N}} 1$$ mechanism.

Assertion : Anhydrides are more reactive than ester for nucleophilic substitution.

Reason : $$RCOO -$$ is better leaving group than $$\mathrm{R}-\mathrm{O}^{-}$$.

Assertion : Propene reacts with $$\mathrm{HI}$$ in presence of peroxide give 1-iodopropane.

Reason : $$1^{\circ}$$ free radical is less stable than $$2^{\circ}$$ free radical.

Assertion : For liquid dishwashing non-ionic type of detergent are used.

Reason : Remove grease and oil by micelle formation.

Assertion : $$d^5$$ configuration is more stable than $$d^4$$.

Reason : $$d^5$$ has more exchange energy as compared to $$d^4$$ because 10 and 6 exchanges are possible in $$d^5$$ and $$d^4$$ respectively.

Assertion : The graph between $$p V$$ v/s $$\frac{1}{V}$$ is a straight line.

Reason : For adiabatic process, $$p \propto \frac{1}{V}$$

Assertion : Tryptophan is an example of non-essential amino acids.

Reason : The amino acids that are not synthesised in human body are non-essential amino acids.

A gun applied a force $F$ on a bullet which is given by $$F=\left(100-0.5 \times 10^5 t\right) \mathrm{N}$$. The bullet emerges out with speed $$400 \mathrm{~m} / \mathrm{s}$$. Then find out the impulse exerted till force on the bullet becomes zero.

A transformer with turns ratio $$\frac{N_1}{N_2}=\frac{50}{1}$$ is connected to a $$120 \mathrm{~V}$$ AC supply. If primary and secondary circuit resistances are $$1.5 \mathrm{~k} \Omega$$ and $$1 \Omega$$ respectively, then find out power of output.

A proton is projected with velocity $$\mathbf{v}=2 \hat{\mathbf{i}}$$ in a region where magnetic field $$\mathbf{B}=(\hat{\mathbf{i}}+3 \hat{\mathbf{j}}+4 \hat{\mathbf{k}}) \mu \mathrm{T}$$ and electric field $$\mathbf{E}=10 \hat{\mathbf{i}} \mu \mathrm{V} / \mathrm{m}$$. Then find out the net acceleration of proton

The given transistor operates in saturation region then what should be the value of $$V_{B B}$$ ?

$$\begin{aligned} & \left(R_{\text {out }}=200 \Omega, R_{\text {in }}=100 \mathrm{~k} \Omega, V_{C C}=3 \mathrm{~V},\right. \\\\ & \left.V_{B E}=0.7 \mathrm{~V}, V_{C E}=0, \beta=200\right) \end{aligned}$$

In figure, two parallel infinitely long current carrying wires are shown. If resultant magnetic field at point $$A$$ is zero. Then determine the value of current $$I$$.

The temperature of food material in refrigerator is 4$$^\circ$$C and temperature of environment is 15$$^\circ$$C. If carnot cycle is used in its working gas, then find its carnot efficiency.

A string wave equation is given $$y=0.002 \sin (300 t-15 x)$$ and mass density is $$(\mu=0.1 \mathrm{~kg} / \mathrm{m})$$. Then find the tension force in the string.

If maximum energy is stored in a capacitor at t = 0, then find the time after which current in the circuit will be maximum.

If voltage across a zener diode is 6V, then find out the value of maximum resistance in this condition.

Two circular loops having same radius $$(R=10 \mathrm{~cm})$$ and same current $$\frac{7}{2} \mathrm{~A}$$ are placed along same axis as shown. If distance between their centres is $$10 \mathrm{~cm}$$, find net magnetic field at point $$P$$.

Initially spring in its natural length now a block at mass 0.25 kg is released then find out maximum force by system on the floor.

If $$7 \mathrm{~gm} \mathrm{~N}_2$$ is mixed with $$20 \mathrm{~gm} \mathrm{~Ar}$$, there $$\frac{C_p}{C_V}$$ of mixture will be

Distance of 5th dark fringe from centre is $$4 \mathrm{~mm}$$. If $$D=2 \mathrm{~m}, \lambda=600 \mathrm{~nm}$$, then distance between slits is

A sphere pure rolls on a rough inclined plane with initial velocity 2.8 m/s. Find the maximum distance on the inclined plane.

Find gravitational field at a distance of $$2000 \mathrm{~km}$$ from the centre of earth. (Given $$R_{\text {earth }}=6400 \mathrm{~km}, r=2000 \mathrm{~km} \text {, } M_{\text {earth }}=6 \times 10^{24} \mathrm{~kg} \text { ) }$$

Two sources of sound S$$_1$$ and S$$_2$$ are moving towards and away from a stationary observer with the same speed respectively. Observer detects 3 beats per second. Find speed of sources (approximately).

Given, $$f_1=f_2=500$$ Hz, speed of sound in air = 330 m/s

In the given circuit, find charge on capacitor after 1s of opening the switch at $$t=\infty$$.

In an isobaric process, the work done by a di-atomic gas is 10 J, the heat given to the gas will be

A capacitor of capacitance $$15 \mu \mathrm{F}$$ having dielectric slab of $$\varepsilon_r=2.5$$, dielectric strength $$30 \mathrm{~MV} / \mathrm{m}$$ and potential difference $$=30 \mathrm{~V}$$. Calculate the area of the plate.

For a wire $$\frac{R}{\ell}=\frac{1}{2}$$ and length of wire is $$\ell=5 \mathrm{~cm}$$. If potential difference of $$\mathrm{l} \mathrm{V}$$ is applied across it, then current through wire will be ($$R=$$ Resistance)

If modulation index, $$\mu=\frac{1}{2}$$ and $$V_m=2$$, then $$V_C$$ is

A body of mass $$5 \times 10^3 \mathrm{~kg}$$ moving with speed $$2 \mathrm{~m} / \mathrm{s}$$ collides with a body of mass $$15 \times 10^3 \mathrm{~kg}$$ inelastically and sticks to it. Then loss in $$\mathrm{KE}$$ of the system will be

If focal length of objective and eye lenses are $$10 \mathrm{~cm}$$ and $$10 \mathrm{~mm}$$ respectively and tube length is $$11 \mathrm{~cm}$$ then angular magnification of telescope is

An electron is moving in a circle of radius 2m with speed of 4 m/s. Find the acceleration of the electron.

If a small orifice is made at a height of 0.25 m from the ground, the horizontal range of water stream will be

Calculate the mean percentage error in five observations,

80.0, 80.5, 81.0, 81.5, 82

Calculate the focal length of given lens if the magnification is $$-$$0 5.

In a $$L C R$$ series circuit source voltage is $$120 \mathrm{~V}$$ and voltage in inductor $$50 \mathrm{~V}$$ and resistance is $$40 \mathrm{~V}$$, then determine voltage in the capacitor

Determine the pressure difference in tube of non-uniform cross sectional area as shown in figure.

$$\Delta P=?, d_1=5 \mathrm{~cm}, v_1=4 \mathrm{~m} / \mathrm{s}, d_2=2 \mathrm{~cm}, v_2=?$$

$$\alpha$$-particle is revolving in a circular path with radius $$r$$ with speed $$v$$, then find the value of magnetic dipole moment.

15 eV is given to electron in 4th orbit then find its final energy when it comes out of H-atom.

If half life of an element is $$69.3 \mathrm{~h}$$, then how much of its percent will decay in 10th to 11th $$\mathrm{h}$$. Initial activity $$=50 ~\mu \mathrm{~Ci}$$

If the speed of sound in air is 330 m/s then, find the number of tones present in an open organ pipe of length 1 m whose frequency is $$\le$$ 1000 Hz.

A light of wavelength $$500 \mathrm{~nm}$$ is incident on a Young's double slit. The distance between slit and screen is $$D=1.8 \mathrm{~m}$$ and distance between slits is $$d=0.4 \mathrm{~mm}$$. If screen moves with a speed of $$4 \mathrm{~m} / \mathrm{s}$$, then with what speed first maxima will move?

In an isothermal process 2 water drops of radius $$1 \mathrm{~mm}$$ are combined to form a bigger drop. Find the energy change in this process if $$T=0.1 \mathrm{~N} / \mathrm{m}$$.

If temperature of Sun $$=6000 \mathrm{~K}$$, radius of Sun is $$7.2 \times 10^5 \mathrm{~km}$$, radius of Earth $$=6000 \mathrm{~km}$$ and distance between Earth and Sun $$=15 \times 10^7 \mathrm{~km}$$. Find intensity of light on Earth.

Calculate radiation power for sphere whose temperature is 227$$^\circ$$C, radius 2 m and emissivity 0.8.

If two protons are moving with speed $$v=4.5 \times 10^5 \mathrm{~m} / \mathrm{s}$$ parallel to each other then find the ratio of electrostatic and magnetic force between them

An ideal gas initially at pressure 1 bar is being compressed from $$30 \mathrm{~m}^3$$ to $$10 \mathrm{~m}^3$$ volume and its temperature decreases from $$320 \mathrm{~K}$$ to $$280 \mathrm{~K}$$, then find final pressure of the gas.

A current of $$10 \mathrm{~A}$$ is passing through a metallic wire of cross-sectional area $$4 \times 10^{-6} \mathrm{~m}^2$$. If the density of the aluminium conductor is $$2.7 \mathrm{~gm} / \mathrm{cc}$$ considering aluminium gives 1 electron per atom for conduction, then find the drift velocity of the electrons if molecular weight of aluminium is $$27 \mathrm{~gm}$$.

Assertion : A metallic surface is moved in and out in magnetic field then emf is induced in it.

Reason : Eddy current will be produced in a metallic surface moving in and out of magnetic field.

Assertion : There is no loss in energy in elastic collision.

Reason : Linear momentum is conserved in elastic collision.

Assertion : Paramagnetic substances get poorly attracted in magnetic field.

Reason : Because magnetic dipoles are aligned along external magnetic field weakly.

Assertion : Distance between position of bright and dark fringe remain same in YDSE.

Reason : Fringe width, $$\beta=\frac{\lambda D}{d}$$

Assertion : In both radioactivity and photoelectric effect electrons may be ejected.

Reason : In photoelectric effect and radioactivity emission occurs only of unstable elements.

Assertion : Electron moving perpendicular to B will perform circular motion.

Reason : Force by magnetic field is perpendicular to velocity.

Assertion : In ionospheric reflection, phase change does not occur with the radio wave.

Reason : The ionosphere reflection is similar to the total internal reflection in miraj.

Assertion : Vibrational degree of freedom of a di-atomic gas molecule appears at every high temperature.

Reason : Di-atomic gas has two vibrational degree of freedom in one direction.

Assertion : $$\mathrm{NH}_3$$ is liquidities more easily than $$\mathrm{CO}_2$$.

Reason : Critical temperature of $$\mathrm{NH}_3$$ is more than $$\mathrm{CO}_2$$.

Assertion : In adiabatic process work is independent of the path.

Reason : In adiabatic process work done is equal to negative of change in internal energy.

Assertion : Water drops take spherical shape when falling freely.

Reason : Water has minimum surface tension among all liquids.

Assertion : Photodiode and solar cell work on same mechanism.

Reason : Area is large for solar cell.

Assertion : Sometimes insects can walk on water.

Reason : The gravitational force on insect is balanced by force due surface tension.

Assertion : Heavy water is used to slow neutron in nuclear reactor.

Reason : It does not react with slow neutron and mass of deuterium is comparable to the neutron.

Assertion : Incoming light reflected by earth is partially polarised.

Reason : Atmospheric particle polarise the light.

Assertion : Amplitude modulation shows more interference than frequency modulation with noise.

Reason : Interference is function of amplitude of modulation wave with carrier-wave.

Assertion : A charge particle is released from rest in magnetic field then it will move in a circular path.

Reason : Work done by magnetic field is non zero.

Assertion : A glass ball is dropped on concrete floor can easily get broken compared if it is dropped on wooden floor.

Reason : On concrete floor glass ball will take less time to come to rest.

Assertion : Even though net external force on a body is zero, momentum need not to conserved.

Reason : The internal interaction between particles of a body cancels out momentum of each other.

Assertion : For an element generally $$N \geq Z$$ ( $$N=$$ number of neutrons, $$Z=$$ atomic number)

Reason : Neutrons always experience attractive nuclear force.