Explore topic-wise MCQs in Applied Chemistry.

This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Calculate the HCV of the coal from the given data:Weight of the fuel burnt=0.92Initial temperature=120CFinal temperature=19.20CWeight of the water in calorimeter is 1458gWater equivalent of calorimeter = 14g.

A. 11520k.cal/m3
B. 11560k.cal/m3
C. 11000k.cal/m3
D. 11590k.cal/m3
Answer» B. 11560k.cal/m3
2.

Modification of the dulong’s formula can be done by considering the ___________

A. latent heat
B. heat
C. fuel state
D. liquid fuels
Answer» B. heat
3.

The dulong’s formula is not applicable for __________

A. solid fuel
B. gaseous fuel
C. liquid fuel
D. any fuel
Answer» C. liquid fuel
4.

C=70%, O=10%, N=1%, S=5% and ash=4%.The NCV of the fuel was found to be 9210cal/g. percentage of hydrogen be x and HCV of the fuel be y. Find out y/x.a) 747.7b) 768c) 777d) 676.9 4.A formula giving the gross heating value of coal in terms of the weight fractions of carbon, hydrogen, oxygen and sulphur from the _________

A. 747.7b) 768c) 777d) 676.9 4.A formula giving the gross heating value of coal in terms of the weight fractions of carbon, hydrogen, oxygen and sulphur from the _________a) ultimate analysis
B. 768c) 777d) 676.9 4.A formula giving the gross heating value of coal in terms of the weight fractions of carbon, hydrogen, oxygen and sulphur from the _________a) ultimate analysisb) proximate analysis
C. 777d) 676.9 4.A formula giving the gross heating value of coal in terms of the weight fractions of carbon, hydrogen, oxygen and sulphur from the _________a) ultimate analysisb) proximate analysisc) distillation
D. 676.9 4.A formula giving the gross heating value of coal in terms of the weight fractions of carbon, hydrogen, oxygen and sulphur from the _________a) ultimate analysisb) proximate analysisc) distillationd) filtrationView Answer
Answer» B. 768c) 777d) 676.9 4.A formula giving the gross heating value of coal in terms of the weight fractions of carbon, hydrogen, oxygen and sulphur from the _________a) ultimate analysisb) proximate analysis
5.

A coal has the following composition by weight: C=90%, O=4%, N=1%, S=0.5% and ash=5%.The NCV of the fuel was found to be 8480cal/g. Calculate the percentage of hydrogen and HCV of the fuel.

A. H=4.21%, HCV=8621.80cal/g
B. H=4.521%, HCV=8221.80cal/g
C. H=4.686%, HCV=8727.37cal/g
D. H=4.1%, HCV=8221.37cal/g
Answer» D. H=4.1%, HCV=8221.37cal/g
6.

Calculate the net calorific value of a coal sample having the following composition:C=80%, H=5%, O=4%, N=3%, S=3.5% and ash=5%.

A. 7251.8cal/g
B. 7780.5cal/g
C. 7621.5cal/g
D. 7830.75cal/g
Answer» E.
7.

While calculating HCV, if we need to apply the fuse wire, acid and cooling corrections then what is the formula for HCV?

A. HCV= [(W + w)(t2-t1+cooling correction)-(acid correction + fuse correction)]/weight of fuel
B. HCV= [(W + w)(t2+t1+cooling correction)-(acid correction + fuse correction)]/weight of fuel
C. HCV= [(W + w)(t2-t1+ acid correction)-( cooling correction + fuse correction)]/weight of fuel
D. CV= [(W + w)(t2+t1+ acid correction)-( cooling correction + fuse correction)]/weight of fuel
Answer» B. HCV= [(W + w)(t2+t1+cooling correction)-(acid correction + fuse correction)]/weight of fuel
8.

Modification of the dulong’s formula can be done by considering the______$

A. latent heat
B. heat
C. fuel state
D. liquid fuels
Answer» B. heat
9.

The dulong’s formula is not applicable for_____$

A. solid fuel
B. gaseous fuel
C. liquid fuel
D. any fuel
Answer» C. liquid fuel
10.

A formula giving the gross heating value of coal in terms of the weight fractions of carbon, hydrogen, oxygen and sulphur from the _________

A. ultimate analysis
B. proximate analysis
C. distillation
D. filtration
Answer» B. proximate analysis
11.

C=70%, O=10%, N=1%, S=5% and ash=4%.The NCV of the fuel was found to be 9210cal/g. percentage of hydrogen be x and HCV of the fuel be y. Find out y/x.

A. 747.7
B. 768
C. 777
D. 676.9
Answer» B. 768
12.

A coal has the following composition by weight:

A.
B. H=4.21%, HCV=8621.80cal/g
C. H=4.521%, HCV=8221.80cal/g
Answer» D.