Chemical Engineering Basics MCQ Questions & Answers

41

A hot short metal is

A) Hard when hot B) Brittle when cold C) Brittle when hot D) Brittle under all conditions

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Answer & Solution

Answer: Option C

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42

Out of the following substances, one ton of __________ will store the maximum heat for a rise of 30°C in temperature.

A) Steel B) Lignite C) Water D) Lime stone

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Answer & Solution

Answer: Option C

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43

A static fluid can not have

A) Zero shear stress B) Positive normal stress C) Non-zero shear stress D) None of these

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Answer & Solution

Answer: Option C

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44

Percentage of differential pressure lost in a venturimeter with a tapering of 15° may be about

A) 1 B) 10 C) 25 D) 50

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Answer & Solution

Answer: Option B

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45

Maximum permissible air velocity in pipelines is about __________ metre/second.

A) 5 B) 10 C) 20 D) 40

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Answer & Solution

Answer: Option B

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46

Aluminium oxide (an abrasive) is used for grinding

A) Ceramics B) High speed steel C) Cemented carbide D) None of these

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Answer & Solution

Answer: Option B

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47

For infinite parallel planes having emis-sivities $${{\varepsilon _1}}$$ & $${{\varepsilon _2}}$$, the interchange factor for radiation from surface 1 to surface 2 is given by

A) $$\frac{{{\varepsilon _1} + {\varepsilon _2}}}{{{\varepsilon _1}.{\varepsilon _2}}}$$ B) $$\frac{{{\varepsilon _1}.{\varepsilon _2}}}{{{\varepsilon _1} + {\varepsilon _2} - {\varepsilon _1}.{\varepsilon _2}}}$$ C) $${\varepsilon _1}.{\varepsilon _2}$$ D) $${\varepsilon _1} + {\varepsilon _2}$$

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Answer & Solution

Answer: Option B

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48

In case of simple harmonic motion, displacement is proportional to the

A) Velocity B) Acceleration C) Both A & B D) Neither A nor B

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Answer & Solution

Answer: Option B

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49

The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

A) Magnesite B) Chrome C) Silica D) Fireclay

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Answer & Solution

Answer: Option C

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50

The path and movements followed by men, materials & equipments in executing the activities is indicated by the

A) Travel charts B) Man-machine charts C) String diagram D) Flow diagram

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Answer & Solution

Answer: Option D

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering