13 JUNE 2021 CURRENT AFFAIRS QUIZ

High sulphur content in a fuel __________ of the flue gases.

Both B & C

Increases the dew point

Reduces the combustion efficiency by limiting the permissible temperature reduction

Decreases the dew point

TRUE ANSWER : ?
YOUR ANSWER : ?

Blast furnace coke is made from coal by

Heating the coal in an oven in presence of air

High temperature carbonisation

Low temperature carbonisation

Medium temperature carbonisation

TRUE ANSWER : ?
YOUR ANSWER : ?

Volumetric ratio of N₂ to O₂ in dry atmospheric air is

4.76

0.79

3.76

0.21

TRUE ANSWER : ?
YOUR ANSWER : ?

Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain

H₂O

CO

Both B & C

CO₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal?

Vitrain

Clarain

Durain

Fussain

TRUE ANSWER : ?
YOUR ANSWER : ?

Yield of blast furnace gas is about __________ Nm³ /ton of pig iron.

300

2000

5000

10000

TRUE ANSWER : ?
YOUR ANSWER : ?

In Orsat's apparatus, ammoniacal cuprous chloride is used for selectivity absorbing

O₂

CO₂

CO

H₂O

TRUE ANSWER : ?
YOUR ANSWER : ?

Combustion reaction of fuels is a/an __________ reaction.

Endothermic

Auto catalytic

Exothermic

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.

6

24

18

12

TRUE ANSWER : ?
YOUR ANSWER : ?

Naphthalene is removed from coke oven gas by

Scrubbing with wash oil (a petroleum product)

None of these

Absorbing in vetro-coke solution

Adsorbing on bog iron bed

TRUE ANSWER : ?
YOUR ANSWER : ?

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