Float and sink test determines the possibility of cleaning of coal by a process based on the

Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the

A

Density separation

B

Differential wettability

C

Size

D

Volatile matter content

A sink contains exactly 12 liters of water. If water is drained from the sink until it holds exactly 6 liters of water less than the quantity of water drained away, how many liters of water were drained away ?

A

2

B

3

C

9

D

6

এ সমস্যা থেকে মুক্তির উপায় হলো—i. CPU ঠাণ্ডা করাii. heat sink পরিষ্কার করাiii. heat sink এর সাথে র্যাম যুক্ত করানিচের কোনটি সঠিক?

A

i ও ii

B

i ও iii

C

ii ও iii

D

i, ii ও iii

Consider the following segment : int d=4 float f= (1/flaot(d))*5; what will be the value for float variable f?

A

1.25

B

0.1

C

5

সি-ভাষার ধ্রুবক ঘোষণা করার নিয়ম হলো-i. Const float pi=3.1416ii. float pi= 3.1416ii. # define pi = 3.1416 নিচের কোনটি সঠিক?

A

i ও ii

B

i ও iii

C

ii ও iii

D

i, ii ও ili

সি-ভাষার ধ্রুবক ঘোষণা করার নিয়ম হলো- i. const float pi =3.1416; ii. float pi = 3.1416; iii. #define pi 3.1416 নিচের কোনটি সঠিক?

A

i ও ii

B

i ও iii

C

ii ও iii

D

i, ii ও iii

Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.

A

1000

B

4000

C

6000

D

8000

Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.

A

Entrained

B

Moving

C

Fixed

D

Fluidised

Proximate analysis of coal determines its __________ content.

A

moisture, ash, sulphur & volatile matter

B

moisture, volatile matter, ash & fixed carbon

C

moisture, sulphur, nitrogen & fixed carbon

D

none of the mentioned

Ultimate analysis of coal determines its __________ content.

A

Carbon, hydrogen, nitrogen & sulphur

B

Carbon, ash, sulphur & nitrogen

C

Carbon, sulphur, volatile matter & ash

D

Carbon, volatile matter, ash & moisture

Float and sink test determines the possibility of cleaning of coal by a process based on the

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