AIIMS Chemistry Mock Test - 9 - NEET MCQ

Six carbon atoms of benzene are of

Bromobenzene reacts with Mg in dry ether to give a compound A, which further reacts with ethanol to yield

The catalyst used in Friedel Craft's reaction is

For a first-order reaction, half life period is independent of

The internal energy of a subtance does not depend upon

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

The compound used as refrigerant is

The speeds of reactions between ions in solution__

The shape of IF₇ molecule 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): Industrial method of preparation of H₂O₂ involves 2-ethylanthra quinol.
Reason(R): Process becomes cyclic.

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): s-orbital cannot accomodate more than two electrons.
Reason(R): s-orbital does not contain any node.

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): Aqueous solution of FeCl₃ is acidic in nature.
Reason(R): The hydrated form of FeCl₃ consists of six water molecules FeCl₃.6H₂O.

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): Water is an amphoteric solvent.
Reason(R): Water has a tendency to accept and donate a proton easily.

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): Thermoplastics can be reheated and reshaped if desired.
Reason(R): Thermoplastics have crossed links.

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):An electron jumps from 5th to 2nd shell,number of possible transition state = 3.
Reason(R): Possible transition state
= ∑Δn = ∑5 − 2 .

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): [Fe(CN)₆]^3- is weakly paramagnetic while [Fe(CN)₆]^4- is diamagnetic.
Reason(R): [Fe(CN)₆]^3- has +3 oxidation state while [Fe(CN)₆]^4- has +2 oxidation state.

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): Esters which contain α-hydrogens undergo Claisen condensation.
Reason(R): LiAlH₄ reduction of esters gives acids.

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): Carbondioxide has greater value of root mean square velocity V_(rms) than Carbon monoxide.
Reason(R): V_(rms)  is directly proportional to molar mass.

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): Oils contain higher proportion of glycerides of saturated fatty acids.
Reason(R): Oils contain a higher percentage of olein.

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): 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): Sodium reacts with oxygen to form Na₂O₂ whereas potassium reacts with oxygen to form KO₂.
Reason(R): Potassium is more electro-positive than sodium.

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): Hydrogen gas cannot be prepared in laboratory.
Reason(R): Hydrogen gas of high purity is obtained by electrolysing warm aqueous barium hydroxide between nickel electrodes.

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): Tetracycline is a will known broad spectrum antibiotic.
Reason(R): It can kill large number of bacteria of gram positive as well as gram negative stains.

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 Graham's law, rate of diffusion of gas A is directly related to square root of its molar mass.
Reason(R): Rate of effusion of hydrogen is four times to that of oxygen.

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): Mesomeric and inductive effects are permanent.
Reason(R): Electromeric effect is temporary.