Chemical Process

Question: Nylon 66 is so named because the
[A].

average degree of polymerisation of the polymer is 1966.

[B].

number of carbon atoms between two nitrogen atoms are 6.

[C].

number of nitrogen atoms between two carbon atoms are 6

[D].

polymer was first synthesised in 1966.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis.
[A].

i – Ni/Al2O3; ii – Cu – ZnO/Al2O3

[B].

i – Fe/Al2O3; ii – Cu – ZnO/Al2O3

[C].

i – Ni/Al2O3; ii – Fe/Al2O3

[D].

i – Fe/Al2O3; ii – Ni/Al2O3

Answer: Option C

Explanation:

No answer description available for this question.

Question: In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :
[A].

furnace → converter → absorber

[B].

furnace → evaporator → absorber

[C].

furnace → converter → evaporator

[D].

converter → furnace → absorber

Answer: Option A

Explanation:

No answer description available for this question.

Question: In industrial nomenclature, alcohol means
[A].

butyl alcohol

[B].

propyl alcohol

[C].

ethanol

[D].

methyl alcohol

Answer: Option C

Explanation:

No answer description available for this question.

Question: Flash point of most vegetable oils is about __________ °C.
[A].

50

[B].

100

[C].

200

[D].

300

Answer: Option C

Explanation:

No answer description available for this question.

Question: For the hydrogenation of oils __________ (A) __________ is commonly used as catalyst and __________ (B) __________ is a catalyst poison.
[A].

(A) platinum (B) sulphur

[B].

(A) palladium (B) oxygen

[C].

(A) nickel (B) sulphur

[D].

(A) nickel (B) oxygen

Answer: Option C

Explanation:

No answer description available for this question.

Question: One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to
[A].

adjust the pH of the syrup.

[B].

remove the coloring matter from the syrup.

[C].

reduce the viscosity of the syrup.

[D].

improve the rate of crystallisation of sugar.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nickel is not used as a catalyst in the
[A].

Fischer-Tropsch process.

[B].

shift conversion.

[C].

hydrogenation of oil.

[D].

Ostwald’s process of HNO3 manufacture.

Answer: Option D

Explanation:

No answer description available for this question.

Question: White phosphorous is stored under water, because
[A].

it does not react with water.

[B].

it is poisonous.

[C].

its kindling temperature in dry air is very low.

[D].

it is unstable.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
[A].

adsorbs

[B].

oxidises

[C].

reduces

[D].

converts

Answer: Option A

Explanation:

No answer description available for this question.