AIIMS Chemistry Mock Test - 6 - NEET MCQ

Which of the following is correctly based on molecular orbital theory for peroxide ion?

Reaction of Cl₂ with benzene in the presence of AlCl₃ is an example of

Amongst the following compounds which can be most easily sulphonated is

n-Butylbenzene on oxidation will give

Which of the following gas changes lime water in milky colour?

Water gas is a mixture of

What is the rate of a reaction in mol-L⁻¹-s⁻¹ in a first order reaction, if its half-life period is 693 s, and its concentration is 2 mol-L⁻¹?

75% of first order reaction is completed in 30 minutes. What is the time required for 93.75% of the reaction (in minutes)?

Two moles of an ideal gas are compressed at 300 K from a pressure of 1 atm to a pressure of 2 atm. The change in free energy is

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): Iron is coated with zinc in galvanisation process.
Reason(R): Zinc works as cathodic protection against rusting of iron.

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): LiCl is predominantly covalent in character.
Reason(R): Electronegativity difference between Li and Cl is too small.

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): Each carbon in ethylene molecule is sp² hydridised.
Reason(R): The H-C-H bond angle in ethylene molecule is 120^o.

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): Metals have characteristic colour and lustre.
Reason(R): Metals are orderly collection of positive ions surrounded by and held together by free electrons.

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): If two moles of AgNO₃ and 2 moles Cu are reacted , then AgNO₃ is the limiting reactant.
Reason(R): AgNO₃ is left in excess and copper is consumed fully.

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): Superoxides of alkali metals are paramagnetic.
Reason(R): Superoxides contain the ion O⁻² which has one unpaired electron.

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): HNO₃ is a stronger acid than HNO₂.
Reason(R): In HNO₃ there are two nitrogen-to-oxygen double bonds whereas in HNO₂ there is only one.

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): Anisole undergoes electrophilic substitution at ortho and para positions.
Reason(R): Anisole is less reactive than phenol towards electrophilic substitution reactions.

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): Carboxylic acids are stabilised by resonance.
Reason(R): Chloroacetic acid is weaker than acetic 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): Water is a universal solvent.
Reason(R): Water is easily obtainable of all chemical compounds.

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): Halogen acids react with alcohols to form haloalkanes.
Reason(R): Order of reactivity of halogen acids HCl>HBr>HI.

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): CuCl₂ gives a deep blue coloured solution with ethylamine.
Reason(R): Ethylamine molecules co-ordinate with cupric ionsforming a bluecoloured complex.

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): Conc. H₂SO₄ reacts with KCl to give Cl₂ gas.
Reason(R): HCl cannot be oxidising by H₂SO₄.

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): Cycloheptatrienyl cationshows unusual stability.
Reason(R): All unsaturated compounds having (4n + 2)π electrons show unusual stability.

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): No heat engine has efficiency of 100%.
Reason(R): It is not possible to convert all the heat into work.

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): Platinum and gold occur in native state in nature.
Reason(R): Platinum and gold are noble metals.

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): Actinium series is so-called because it starts with an isotope of actinium.
Reason(R): Actinium is found innature as such and not formed due to disintegration of any other radioisotope.

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):Electrolytic conduction increases with increase in temperature.
Reason(R):Increase in temperature causes the electronic movement more rapid.