Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering Page-4 section-3

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10 Section 11 Section 12 Section 13

31.
The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : C_p of copper is 23 J.K^-1 mole^-1)

A. 2300 J

B. 4600 J

C. 230 J

D. 2.3 × 10⁶ J

Answer & Solution Discuss in Board Save for Later

32.
While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ × T_m (where, T_m Melting temperature).

A. 0.25

B. 0.45

C. 0.70

D. 0.95

Answer & Solution Discuss in Board Save for Later

33.
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. 5

C. 10

D. 20

Answer & Solution Discuss in Board Save for Later

34.
M10 index of coke indicates its

A. Compressive strength

B. Hardness

C. Abrasion resistance

D. Impact strength

Answer & Solution Discuss in Board Save for Later

35.
Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to

A. $$\frac{{{{\text{r}}_2} - {{\text{r}}_1}}}{{{{\text{r}}_1} - {{\text{r}}_2}}}$$

B. $$\frac{{{{\text{r}}_2}\,.\,{{\text{r}}_1}}}{{{{\text{r}}_2} - {{\text{r}}_1}}}$$

C. $$\frac{{{{\text{r}}_1} + {{\text{r}}_2}}}{{{{\text{r}}_1}\,.\,{{\text{r}}_2}}}$$

D. $$\frac{{{{\text{r}}_1}\,.\,{{\text{r}}_2}}}{{{{\text{r}}_1} + {{\text{r}}_2}}}$$

Answer & Solution Discuss in Board Save for Later

36.
The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________ BTU/hr.

A. 100

B. 200

C. 1000

D. 2000

Answer & Solution Discuss in Board Save for Later

37.
The power of a low capacity prime mover is most suitably measured by a __________ type dynamometer.

A. Driving

B. Transmission

C. Absorption

D. None of these

Answer & Solution Discuss in Board Save for Later

38.
Which of the following is not a charge material for cupola ?

A. Limestone

B. Iron scrap

C. Iron ore

D. Pig iron

Answer & Solution Discuss in Board Save for Later

39.
To counteract the bad effects of strain hardening on a cold formed part, it must be

A. Tempered

B. Normalised

C. Annealed

D. Hardened

Answer & Solution Discuss in Board Save for Later

40.
A good abrasive

A. Should be friable

B. Should have low refractoriness

C. Is made up of large size of crystals

D. Should be soft

Answer & Solution Discuss in Board Save for Later

1 2 3 4 5 6 7 8 9 10

Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

31. The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J.K-1 mole-1)

Answer & Solution

32. While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________ × Tm (where, Tm Melting temperature).

Answer & Solution

33. 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.

Answer & Solution

34. M10 index of coke indicates its

Answer & Solution

35. Heat flow across a hollow sphere of inner radius 'r1' and outer radius 'r2' is directly proportional to

Answer & Solution

36. The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________ BTU/hr.

Answer & Solution

37. The power of a low capacity prime mover is most suitably measured by a __________ type dynamometer.

Answer & Solution

38. Which of the following is not a charge material for cupola ?

Answer & Solution

39. To counteract the bad effects of strain hardening on a cold formed part, it must be

Answer & Solution

40. A good abrasive

Answer & Solution

Read More Section(Chemical Engineering Basics)

31.
The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : C_p of copper is 23 J.K^-1 mole^-1)

32.
While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ × T_m (where, T_m Melting temperature).

33.
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.

34.
M10 index of coke indicates its

35.
Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to

36.
The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________ BTU/hr.

37.
The power of a low capacity prime mover is most suitably measured by a __________ type dynamometer.

38.
Which of the following is not a charge material for cupola ?

39.
To counteract the bad effects of strain hardening on a cold formed part, it must be

40.
A good abrasive