Fuels and Combustion

Calorific value of a typical dry anthracite coal may be around _____________ Kcal/kg?

Byadmin March 7, 2019August 26, 2021

Calorific value of a typical dry anthracite coal may be around _____________ Kcal/kg?

A. 1000
B. 4000
C. 8000
D. 15000

Fuels and Combustion

With increase in C/H ratio of a fuel, the amount of CO2 formed on its complete combustion____________________?

With increase in C/H ratio of a fuel, the amount of CO2 formed on its complete combustion____________________?

A. Increases
B. Decreases
C. Remain same
D. Either A. or B., depends on other factors

Read More With increase in C/H ratio of a fuel, the amount of CO2 formed on its complete combustion____________________?
Fuels and Combustion

Which of the following is not a ‘manufactured’ fuel ?

Which of the following is not a ‘manufactured’ fuel ?

A. LPG
B. Coal briquettes
C. Tar
D. Colloidal fuels

Read More Which of the following is not a ‘manufactured’ fuel ?
Fuels and Combustion

Coal containing large quantity of _______________ are difficult to wash?

Coal containing large quantity of _______________ are difficult to wash?

A. Ash
B. Inherent mineral matter
C. Free impurities
D. Volatile matter

Read More Coal containing large quantity of _______________ are difficult to wash?
CHEMICAL ENGINEERING | Fuels and Combustion

A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the ‘carpet loss’. The carpet loss may be of the order of __________ cms.

Question: A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the ‘carpet loss’. The carpet loss may be of the order of __________ cms.
[A].

1 to 2
[B].
3 to 4
[C].
5 to 15
[D].
20 to 40

Answer: Option C

Explanation:

No answer description available for this question.

Read More A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the ‘carpet loss’. The carpet loss may be of the order of __________ cms.
CHEMICAL ENGINEERING | Fuels and Combustion

Mott and Wheeler test is conducted on coke to find its

Question: Mott and Wheeler test is conducted on coke to find its
[A].

reactivity with O2.
[B].
abradability.
[C].
phosphorus content.
[D].
volatile matter content.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Mott and Wheeler test is conducted on coke to find its
Fuels and Combustion

Softening temperature of coal ash is a measure of the _____________ of coal?

Softening temperature of coal ash is a measure of the _____________ of coal?

A. Caking tendency
B. Coking tendency
C. Clinkering tendency
D. Size stability

Read More Softening temperature of coal ash is a measure of the _____________ of coal?