CHEMICAL ENGINEERING | Chemical Process

The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is

Byadmin August 10, 2022

Question: The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
[A].

dilute H2SO4

[B].

oleum

[C].

ultraviolet light

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Environmental Engineering

Inhalation of silica dust by human being causes

Question: Inhalation of silica dust by human being causes
[A].

asphyxiation
[B].
shortness of breath
[C].
tuberculosis
[D].
both(b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Read More Inhalation of silica dust by human being causes
CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then(where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively)

Question: A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then(where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively)
[A].

Δ S1 is always < Δ SR
[B].
Δ S1 is sometimes > Δ SR
[C].
Δ S1 is always > Δ SR
[D].
Δ S1 is always = Δ SR

Answer: Option C

Explanation:

No answer description available for this question.

Read More A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then(where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively)
Chemical Process

Which of the following is an ore of iron ?

Which of the following is an ore of iron ?

A. Galena
B. Chalcopyrite
C. Hematite
D. Bauxite

Read More Which of the following is an ore of iron ?
CHEMICAL ENGINEERING | Fuels and Combustion

“Micum Index” of a coke is a measure of its

Question: “Micum Index” of a coke is a measure of its
[A].

reactivity.
[B].
porosity.
[C].
bulk density.
[D].
hardness & strength.

Answer: Option D

Explanation:

No answer description available for this question.

Read More “Micum Index” of a coke is a measure of its
CHEMICAL ENGINEERING | Chemical Engineering Basics

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm.

Question: Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm.
[A].

15
[B].
25
[C].
10
[D].
30

Answer: Option B

Explanation:

No answer description available for this question.

Read More Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm.
CHEMICAL ENGINEERING | Polymer Technology

Polypropylene is preferred to polythene, because the former is

Question: Polypropylene is preferred to polythene, because the former is
[A].

non-inflammable
[B].
harder
[C].
stronger
[D].
both(b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Read More Polypropylene is preferred to polythene, because the former is

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