AIIMS Chemistry Mock Test - 2 - NEET MCQ

'M' is the molecular mass of 'KMnO₄'.The equivalent mass of KMnO₄ when it is converted into K₂MnO₄ is

Gammexane is

The bond order of individual carbon carbon bonds in benzene is

Toluene on oxidation with chromyl chloride produces

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

The pair of species having identical shapes for melecules of both species is

A substance 'A' decomposes in solution following the first order kinetics. Flask I contains 1 L of 1 M solution of A and flask II contains 100 ml of 0.6 M solution. After 8 hrs, the concentration of A in flask I becomes 0.25 M, what will be the time for concentration of A in flask II to become 0.3 M?

The time taken for 90% of a first order reaction to complete is approximately

When 1 mol of a gas is heated at constant volume, temperature is raised from 298 to 308 K. Heat supplied to gas is 500 J. Then which statement is correct?

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): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones.
Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.

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): H₂O₂ can reduce Cl₂ to HCl.
Reason(R): H₂O₂ is also called antichlor.

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): Melting point and b.p are taken as criteria of party of an organic compound.
Reason(R): Pure organic compounds have sharp constant m.p or b.p.

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): Lithium differes from rest of the members of group I.
Reason(R): Li has small size and forms covalent compounds in comparison to other group I 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): Borax bead test is not suitable for Al(III).
Reason(R): Al₂O₃ is insoluble in water.

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.

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): NO₃^- is planar while NH₃ is pyramidal.
Reason(R): N in NO₃^- is sp² hybridised but in NH₃ it is sp³ hybridised.

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): PCl₅ is covalent in gaseous and liquid state but ionic in solid state.
Reason(R): The solid state of PCl₅ consists of tetrahedral cation and octahedral anion.

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): Para-hydrogen has lower internal energy and is favoured at high temperature.
Reason(R): The thermal conductivity of para-hydrogen is lesser than that of ortho-hydrogen.

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 kinetic of the reaction: mA + nB + pC → m'X + n'Y + p'Z, obeys the rate expressions as dX/dt = k [A]^m [B] ⁿ
Reason(R): The rate of the reaction does not depend upon the concentration of C.

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(R): Lower aldehydes and ketones are soluble in water but the solubility decreases as the molecular masses increase.
Reason(R): Distinction between aldehydes and ketones can be made by Tollen's reagent.

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): Highly branched carboxylic acids are are acidic than unbranched acids.
Reason(R): Hydrogen bonding in carboxylic acid is stronger than alcohols.

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 S-S-S bond angle in S₈ molecule is 105º.
Reason(R): S₈ has a V-shape.

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): Vitamin B₅ is also called pyridoxin.
Reason(R): Deficiency of vitamin B₅ causes determatitis and dementia.

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): [Ti(H₂O)₆]³⁺ is coloured while [Sc(H₂O)₆]³⁺ is colourless.
Reason(R): d-d transition is not possible in[Sc(H₂O)₆]³⁺.

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): Starch contains 20% amylose and 80% amyplopectin.
Reason(R): In starch , the glucose units are linked by β-linkages .

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): Na⁺ and Al³⁺ are isoelectronic but the magnitude of ionic radius of Al³⁺is less than that of Na⁺.
Reason(R): The magnitude of effective nuclear charge of the outer shell electrons in Al³⁺ is greater than that in Na⁺.