CHEMICAL ENGINEERING

Question: Diaphragm electrolytic cell as compared to mercury electrolytic cell
[A].

produces 70% NaOH solution.

[B].

requires less specific power consumption for the production of chlorine.

[C].

requires lesser investment for similar capacity.

[D].

all (a), (b) and (c).

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ nature of hypo (sodium thiosulphate) makes it useful in photography.
[A].

Oxidising

[B].

Reducing

[C].

Complex forming

[D].

Photochemical

Answer: Option C

Explanation:

No answer description available for this question.

Question: Main constituent of limestone is
[A].

CaCO3

[B].

MgCO3

[C].

Na2CO3

[D].

CaSO4

Answer: Option A

Explanation:

No answer description available for this question.

Question: CO & H2 are the constituents of
[A].

producer gas

[B].

water gas

[C].

coke oven gas

[D].

all (a), (b) and (c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system )
[A].

P

[B].

P

[C].

P2

[D].

1/P

Answer: Option B

Explanation:

No answer description available for this question.

Question: Iron ore hametite is concentrated using
[A].

electro magnetic separation mainly.

[B].

gravity separation.

[C].

froth floatation.

[D].

roasting.

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ is used as a flux in the smelting of copper ore like chalcopyrite.
[A].

Coke breeze

[B].

Lime powder

[C].

Silica/quartz

[D].

Dolomite

Answer: Option C

Explanation:

No answer description available for this question.

Question: Esterification reaction
[A].

produces soap.

[B].

is reversible.

[C].

is a reaction between an alcohol and an organic acid.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Hydrogenation of edible vegetable oils
[A].

is an exothermic reaction.

[B].

increases their melting point.

[C].

is done in presence of nickel catalyst.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Chalcopyrite is the main ore of
[A].

copper

[B].

lead

[C].

tin

[D].

iron

Answer: Option A

Explanation:

No answer description available for this question.