Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering Page-1 section-9

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1.
Which of the following is not an ore of iron?

A. Chalcopyrite

B. Magnetite

C. Hemetite

D. Limonite

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2.
Which of the following pairs regarding the effect of alloying elements in steels are not matched correctly?

A. Cobalt: It contributes to rerl hardness by hardening ferrite

B. Molybdenum: It forms abrasion resisting particles

C. Phosphorous: It improves machinability in free cutting steels

D. Silicon: It reduces oxidation resistance

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3.
Corrosion of metals can not be prevented by its

A. Tempering

B. Chromising

C. Aluminising

D. Alloying

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4.
Which of the following materials has the least scrap value?

A. Aluminium

B. Stainless steel

C. Brass

D. Copper

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5.
A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.

A. Lack of free

B. Excess of

C. Decrease in

D. None of these

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6.
Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

A. Mach

B. Froude

C. Reynolds

D. Euler

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7.
Lubricants can be used to

A. Transmit power hydraulically

B. Form a seal in compressors

C. Remove contaminants by flushing and to insulate transformers, switchgears etc

D. All of the above

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8.
Lubrication is done to control

A. Friction

B. Wear

C. Temperature

D. All of the above

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9.
In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

A. 1

B. 1.4

C. 1.5

D. $$\gamma = \frac{{{{\text{C}}_{\text{p}}}}}{{{{\text{C}}_{\text{v}}}}}$$

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10.
Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.

A. Flanged iron

B. Collar

C. Flexible

D. Expansion

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

1. Which of the following is not an ore of iron?

Answer & Solution

2. Which of the following pairs regarding the effect of alloying elements in steels are not matched correctly?

Answer & Solution

3. Corrosion of metals can not be prevented by its

Answer & Solution

4. Which of the following materials has the least scrap value?

Answer & Solution

5. A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.

Answer & Solution

6. Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

Answer & Solution

7. Lubricants can be used to

Answer & Solution

8. Lubrication is done to control

Answer & Solution

9. In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

Answer & Solution

10. Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.

Answer & Solution

Read More Section(Chemical Engineering Basics)

1.
Which of the following is not an ore of iron?

2.
Which of the following pairs regarding the effect of alloying elements in steels are not matched correctly?

3.
Corrosion of metals can not be prevented by its

4.
Which of the following materials has the least scrap value?

5.
A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.

6.
Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

7.
Lubricants can be used to

8.
Lubrication is done to control

9.
In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

10.
Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.