AIIMS Chemistry Mock Test - 5 - NEET MCQ

The simplest formula of a compound containing 50% of element of X (atomic mass = 10) and 50% of element Y (atomic mass 20) is

Among the following compounds which is most reactive towards nitration

Amongst the following compounds which can be most easily sulphonated is

Adding Cl₂ to benzene in the presence of anhydrous AlCl₃ is an example of

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

Dipole moment is highest in

For most of the chemical reactions the rate of reaction

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 mole of B?

Which of the following is true for an isochoric processes

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): Polypropylene is an addition polymer.
Reason(R): Polypropylene is polyene.

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): Ammonolysis of alkyl halides ivolves the reaction between alkyl halides and alcoholic ammonia.
Reason(R): Reaction can be used to prepare only 2º amines.

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): Vapour pressure of NH₃ is higher than C₂H₅OH.
Reason(R): Inter-molecular H-bonding is present in NH₃ as well as C₂H₅OH.

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 value of s signifies for the direction of revolution of an electron .
Reason(R): The revolution can be clockwise or anticlock wise.

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 electron in an atom behaves as a small magnet.
Reason(R): Electrons have orbital and spin magnetic moments.

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): Lyman series involves higher energy transitions than Balmer series.
Reason(R): Lyman series falls in UV region, whereas Balmer series falls in visible region.

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): Acylation of aniline increases the reactivity of benzene ring (as compared with that in aniline).
Reason(R): Acylation of aniline results in decrease in electron density at the benzene ring.

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 a catalytic reaction, the energy of activation is reduced in comparison to the uncatalysed one.
Reason(R):The catalyst affects the reaction equilibrium constant.

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 is strongest reducing agent among alkali metals.
Reason(R): Li has highest hydration energy among alkali 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): Atomic radii decrease left to right in a period.
Reason (R): When the electrons are added to the same shell, they are poorshielders, hence effective nuclear charge decreases.

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): Ionic solids are characterised by high melting and boiling point.
Reason(R): Ionic solids have coulombic forces of attraction between their ions.

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): Sulphanilic acid exists asa dipolar ion whereas p-amonobenzoic acid does not.
Reason(R): Carboxyl group being more acidic than the -SO₃H group, can easily transfer H⁺ to the amion 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): High density polythene contains linear chain polymers.
Reason(R): It is a translucent polymer.

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): Electropositivity increases down the group but decreses along the period.
Reason(R): electronpositicity denpends upon ionisation energy and sublimation 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): Borax bead test is only for coloured salts.
Reason(R): In this test coloured salts form coloured metal metaborates.

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): Benzaldehyde is more reactive than ethanol towards nucleophilic attack.
Reason(R): All the carbon atoms of benzaldehyde are sp²-hybridized.

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): Methane cannot be obtained by Wurtz reaction.
Reason(R): Wurtz reaction leads to the formation of symmetrical alkane having an even number of carbon atoms.