AIIMS Chemistry Mock Test - 7 - NEET MCQ

The bond between two identical non metal atoms has a pair of electrons

Aromatic compounds undergo

The correct order of reactivity towards the electrophilic substitution of the compounds ,aniline (I),benzene (II) and nitrobenzene (III),is

Gammexane is

Freon is used as a

Water gas is a mixture of

The dimension of rate constant of a second order reaction involves

The entropy change when two moles of ideal monoatomic gas is heated from 200^o C to 300^o C reversibly and isochorically ?

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The m.p./b.p. of noble gas are quite high.
Reason(R): The interparticle forces among noble gases in their liquid state are van der Waal's forces.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Li⁺ ion has the lowest mobility in aqueous solutions among alkali metals.
Reason(R): Lithium has higher ionisation energy among alkali metals.

The reaction A → B follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B is 1 hour. What is the time taken for conversion of 0.9 mole of A to produce 0.675 moles of B?

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The oxidation state of iron in brown coloured complex formed in ring test is +1.
Reason(R): The measured magnetic moment is 3.87 BM.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The reaction rate of most of the reactions doubles when temperature is increased from 298 K to 308 K.
Reason(R): The activation energy of reaction decreases with increase in temperature.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Second ionisation energy of C,N,O,F, increases in the order. C < N < F < O.
Reason (R): Ionisation energy increase with deceasing size.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Iodination of alkane is made in presence of HgO or HIO₃.
Reason(R): Iodination is very slow and reversible process.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): [Ni(CN)₄]^2- has square planar and [NiCl₄]^2- has tetrahedral shape.
Reason(R): [Ni(CN)₄]^2- is diamagnetic while NiCl₂^2- is paramagnetic.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Boric acid acts as a strong acid in presence of catechol.
Reason(R): Boric acid does not act as a proton donor but behaves as a Lewis acid.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Equanil is a tranquiliser.
Reason(R): Equanil is used to cure depression and hypertension.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Ice is less dense than water.
Reason(R): Ice is a solid whereas water is liquid.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Electrons enter into fifth shell even before the fourth shell is completely filled.
Reason(R): The subshell with lower value of (n + 1) possesses higher energy.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): According to the principle of common ion effect, the solubility of HgI₂ is expected to be less in an aqueous solution of KI than in water. But HgI₂ dissolves in an aqueous solution of KI to form a clear solution.
Reason(R): Iodide ion, I⁻, is highly polarisable.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The probability of finding 4s-electron very close to nucleus is not zero.
Reason(R): 4s electron density can penetrate into the inner shell electron density.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Non-metals oxidation state of metal
Reason(R): Oxidation state of metal becomes positive as it is oxidised and non-metal becomes negative asitis reduced.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Elastomers are polymers that will not stretch when a force is applied on them.
Reason(R): Rubber is an elastomer.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Electronegativity of alkalinmi metal is low.
Reason(R): Ionisation energy and electron gain ehthalpy of alkali metal is low.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): In CaCl crystal, the co-ordination number of Cs⁺ ion is 8.
Reason(R): Ci^-ion in CsCl adopt bcc type of packing.

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): The rest mass for electron is 0.0005486 u.
Reason (R): Electron is assumed moving while calculating rest mass.