AIIMS MBBS Entrance Test 2019 Chemistry Paper with Answer & Solutions 25 May First Shift Part 8

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Q-88: On Heating hydronic acid form

(1)

(2

(3)

(4

Answer: (4)

Solution:

Q-89:

Assertion: becomes yellow when it is heated.

Reason: The anionic sites occupied by unpaired electrons (due to F-centres)

Answer: (1)

Solution:

Zinc oxides white in colour at room temperature. On heating it loses oxygen and turns yellow.

(Metal deficiency effect due to presence of extra cations at interstitial sites :)

Q-90: Assertion: The graph between is a straight line.

Reason: For adiabatic process

Answer: (3)

Q-91:

Assertion: is more stable in compare to

Reason: The electronic configuration of is .

Answer: (3)

Solution:

.

So is more stable than

Q-92:

Assertion: The chemical properties of different isotope are same.

Reason: Isotopes having same number of neutron.

Answer: (3)

Solution:

Isotopes have different number of neutrons

Q-93: Which metals upon heating in presence of air followed by hydrolysis gives Ammonia.

(1)

(2)

(3)

(4)

Answer: (3)

Solution:

Q-94: At mole of butane is heated then and liquid is formed work done is:

Options:

(1)

(2)

(3)

(4) None of these

Answer: (2)

Solution:

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