Chemical Engineering

Question: Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.
[A].

75

[B].

< 10

[C].

> 30

[D].

50

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ paper is used in the manufacture of newsprint paper.
[A].

Groundwood

[B].

Board

[C].

Tissue

[D].

Wrapping

Answer: Option A

Explanation:

No answer description available for this question.

Question: In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 2SO3), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by
[A].

increasing the oxygen concentration.

[B].

putting more quantity of V2O5 catalyst in the converter.

[C].

removing some quantity of SO3 during intermediate stage.

[D].

maintaining low temperature & pressure in the converter.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Major component of flint glass is
[A].

lead oxide

[B].

silica

[C].

alumina

[D].

soda

Answer: Option A

Explanation:

No answer description available for this question.

Question: Drinking (potable) water treatment does not involve
[A].

coagulation

[B].

sedimentation

[C].

softening

[D].

disinfection

Answer: Option C

Explanation:

No answer description available for this question.

Question: Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
[A].

reverse osmosis

[B].

sand filter

[C].

lime soda

[D].

permutit

Answer: Option A

Explanation:

No answer description available for this question.

Question: Calgon used in water treatment is chemically
[A].

sodium phosphate

[B].

sodium hexametaphosphate

[C].

calcium phosphate

[D].

tricresyl phosphate

Answer: Option B

Explanation:

No answer description available for this question.

Question: ‘Synthesis gas’ meant for the synthesis of organic compound is a variable mixture of
[A].

N2 & H2

[B].

CO2 & H2

[C].

CO & H2

[D].

C & H2

Answer: Option C

Explanation:

No answer description available for this question.

Question: Bisphenol A is produced by the condensation of acetone with
[A].

formaldehyde

[B].

ethyl alcohol

[C].

diethyl ether

[D].

phenol

Answer: Option D

Explanation:

No answer description available for this question.

Question: Catalytic oxidation-dehydrogenation of methyl alcohol produces
[A].

formaldehyde

[B].

phenol

[C].

acetone

[D].

maleic anhydride

Answer: Option A

Explanation:

No answer description available for this question.