Chemical Engineering Basics MCQ Questions & Answers

61

Pick out the wrong statement.

A) The equivalent stiffness of two springs (of equal stiffness 'S') in series is $$\frac{{\text{S}}}{2}$$ while in parallel is 2S B) For a helical spring, deflection is proportional to D³ (D = mean coil diameter) or d⁴ (d = wire diameter) C) Crushing load or columns is less than the buckling load D) Modulus of resilience is proportional to (stress at elastic limit)²

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Answer & Solution

Answer: Option C

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62

Boiler tube size is specified by its thickness and __________ diameter.

A) Outside B) Inside C) Mean D) None of these

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Answer & Solution

Answer: Option A

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63

Break even point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost

A) Only B) Plus variable cost C) Plus overhead cost D) Plus selling expenses

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Answer & Solution

Answer: Option B

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64

Direct conversion of thermal energy to electrical energy is facilitated by the

A) Fuel cells B) Photo voltaic cell C) Magneto hydrodynamic generator D) None of these

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Answer & Solution

Answer: Option C

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65

Which of the following approaches the ideal gas behaviour most closely?

A) Wet steam B) Saturated steam C) Superheated steam D) Saturated water

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Answer & Solution

Answer: Option C

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66

Heat treatment of steel is done mainly to change its

A) Mechanical properties B) Physical properties C) Chemical composition D) All of the above

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Answer & Solution

Answer: Option A

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67

Fire on fuel oil lines can be extinguished by

A) Foam B) Steam C) Water D) Carbon dioxide

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Answer & Solution

Answer: Option A

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68

__________ property of steel increases by addition of large amount of silicon in it.

A) Mechanical B) Machining C) Magnetic D) Refractory

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Answer & Solution

Answer: Option C

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69

LASER

A) Stands for Light Amplification by Stimulated Emission of Radiation B) Has the same intensity as visible light C) Can't be used for cutting metals D) None of these

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Answer & Solution

Answer: Option A

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70

Laser is a device to produce

A) Gamma rays B) Microwaves C) A beam of white light D) A beam of coherent light

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Answer & Solution

Answer: Option D

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering