For moisture determination during proximate analysis of coal, -72 mesh coal (2 - 10 gms) is heated between 105 to 110°C

Determination of ash content of coal during its proximate analysis, the temperature of weighed coal sample is raised to 400 - 500°C in half an hour and maintained at the same level for further half an hour. The temperature is then raised to . . . . . . . . °C at which the sample is heated for one more hour before weighing it.

A

775 ± 25

B

875 ± 25

C

975 ± 25

D

1075 ± 25

Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis.

A

550

B

750

C

950

D

1150

Assertion (A): All the mesh currents are necessarily the loop currents but all the loop currents may not be the mesh current. Reason (R): The mesh current is the current which flows only around the perimeter of a mesh.

A

Both (A) and (R) are true and (R) is the correct explanation of (A).

B

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

C

(A) is true, but (R) is false.

D

(A) is false, but (R) is true.

In the question below are given six statements followed by four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: All Petrol are Gasoline. No petrol is Water. Some Water are Gas. Some Moisture are Gas. All Gasoline are Fire No Moisture is Fire Conclusions: I. Some Moisture are Gasoline. II. Some Water are Moisture. III. Some Gasoline are Gas. IV. Some Petrol are Moisture.

A

None follows

B

Either I or III follows

C

Only III & IV follow

D

Only II & III follow

E

All follow

A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal

A

Density of metal can’t be determined

B

Metal is twice as dense as water

C

Metal will float in water

D

Metal is twice as dense as unknown fluid

1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is

A

C₄H₉OH

B

C₃H₂₁OH

C

(C₂H₄)₂H₂.OH

D

C₂H₃₃OH

Which of the following statements is most relevant in the context of Job Analysis? Choose the correct answer from the code given below. (i) Job Analysis helps in identifying the right person for the right job. (ii) A person cannot judge the job from the point of view of its suitability. (iii) Job analysis helps in job satisfaction and job efficiency. (iv) Through Job Analysis an employer cannot evaluate the prospective employee to judge his fitness or otherwise for the job. (v) Job Analysis helps in planning appropriate training programs. (vi) Job Analysis defines client needs in specific terms. (vii) Job Analysis assists in knowing the personnel specifications for various jobs.

A

(i), (ii), (iii) and (iv)

B

(i), (iv), (v) and (vi)

C

(i), (iii), (vi) and (vii)

D

(ii), (iii), (v) and (vi)

Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis.

A

500

B

750

C

950

D

1100

Proximate analysis of 50 g of a coal sample shows the following:
Moisture = 0.80 g
Ash = 7.85 g
Volatile matter = 15.90 g
The fixed carbon in percentage on a dry, ash free basis is

A

83

B

66

C

55

D

45

E

61.55

Mc-Gehee and Thayer recommend which of the following three tier approach to determine the training needs?
1. Organisational Analysis
2. Operational/Task Analysis
3. Man Power Analysis
4. Assets Value Analysis
5. Inventory Analysis
6. Skill Analysis

A

4, 5 and 6

B

2, 3 and 6

C

1, 2 and 3

D

1, 3 and 5

For moisture determination during proximate analysis of coal, -72 mesh coal (2 - 10 gms) is heated between 105 to 110°C

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