AIIMS Chemistry Mock Test - 4 - NEET MCQ

12g of Mg (at.mass 24) will react completely with acid to give

Which of the following possesses the highest melting point?

Toluene on oxidation with chromyl chloride produces

The most reactive compound for electrophilic nitration is

In graphite, the electrons are

Which of the following compounds has the highest boiling point?

The rate of a reaction can be increased in general by all the factors except by

The rate at which a substance reacts depends on its

The intensive property among these quantities 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): The ligand cyanide and isocyanide are called ambidentate.
Reason(R): These ligands gives rise to linkage isomerism.

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): Sodium ions are discharged in preference to H⁺ ions at mercury cathode.
Reason(R): The nature of cathode can affect the order of discharge of cation.

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 Na₂CO₃ is alkaline in nature.
Reason(R): When dissolved in water, Na₂CO₃ undergoes anionic hydrolysis to form strong base and weak 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): 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): Pure acetic acid is converted into ice like solid called glacial acetic acid.
Reason(R): Acetic acid is stronger than HCOOH.

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): Alcohols are dehydrated to hydrocarbons in the presence of acidic zeolites.
Reason(R): Zeolites are porous catalysts.

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):MgO is used for lining of steel making furnace.
Reason(R):MgO acts as acidic flux and facilitates the removal of acidic impurities of Si, P and S from steel through slag formation.

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): Emission spectrum can be continuous or discontinuous.
Reason (R): If source emits white light, it is continuous and if source emits some coloured radiation, it is discontinuous.

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): Cyclic ketones like cyclohexanone exhibit keto-enol tautomerism .
Reason(R): In cyclohexanone , one form contains the keto group (C = O) while other contains enolic group (- C = C - OH).

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): Chloroform and benezene are miscible liquids and they are separated by fractional distillation.
Reason(R): Boiling point of benzene is less than that of chloroform .

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): Benzene on heating with conc. H₂SO₄ forms benzene sulphonic acid which when heated with superheated steam under pressure forms benzene again.
Reason(R): Sulphonation of benzene is a 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): KMnO₄ and K₂Cr₂O₇ are intensely coloured compounds.
Reason(R): Transition metal compounds having electrons in d-orbitals are coloured due to d-d transition.

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): Hydroxyketones are not directly used in grrignard reaction.
Reason(R): Grignard reagent reacts with hydroxyl group.

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 has only one elctron in its orbit but it produces several spectral lines.
Reason(R): There are many excited energy levels available.

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): Alizarin is a neutral dye also used as mordant dye.
Reason(R): It imparts same colour when aluminium and chrominum salts are used as mordants.

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.