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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

Globular form of cementite is formed during the _________________ process ?

A Spheroidising

B Hardening

C Annealing

D Normalising

Review Detailed Answer

Correct Answer: Hardening

A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is ________________ W/m2 °C ?

A 50

B 100

C 150

D 200

Review Detailed Answer

Correct Answer: 100

In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be________________?

A Higher, as it gives higher wavelength

B Lower, as it gives higher wavelength

C Higher, as it gives shorter wavelength

D Lower, as it gives shorter wavelength

Review Detailed Answer

Correct Answer: Higher, as it gives shorter wavelength

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively ?

A 2

B 8

C 10

D 40

Review Detailed Answer

Correct Answer: 2

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg) ?

A Propane and acetylene

B Propane and LPG

C Sewage gas and gobar gas

D B.F gas and coke oven gas

Review Detailed Answer

Correct Answer: B.F gas and coke oven gas

The critical pressure at which the latent heat of vaporization of steam becomes zero is _____________ Kg/cm2 ?

A 273.15

B 225.65

C 100.03

D 373.15

Review Detailed Answer

Correct Answer: 225.65

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is_________________?

A 130

B 180

C 230

D 250

Review Detailed Answer

Correct Answer: 230

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the________________?

A Range is 15°F

B Approach is 10°F

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

Lead is poured into the joint between two ______________ pipes?

A Mild steel

B Concrete

C Cast iron

D Asbestos cement

Review Detailed Answer

Correct Answer: Cast iron

The emf of a Deniell cell “Zn | Zn2+ || Cu2+ | Cu” can be increased by_________________?

A Decreasing the surface area of the electrodes

B Increasing the concentration of zinc sulphate solution

C Increasing the surface area of the electrodes

D Increasing the concentration of copper sulphate solution

Review Detailed Answer

Correct Answer: Increasing the concentration of copper sulphate solution

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Globular form of cementite is formed during the _________________ process ?

In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be________________?

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively ?

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg) ?

The critical pressure at which the latent heat of vaporization of steam becomes zero is _____________ Kg/cm2 ?

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is_________________?

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the________________?

Lead is poured into the joint between two ______________ pipes?

The emf of a Deniell cell “Zn | Zn2+ || Cu2+ | Cu” can be increased by_________________?