Engineering Chemistry Multiple Choice Questions on “Solid Fuels – 1”.
1. Which of the following fuel is formed from industrial waste?
a) Lignite
b) Briquetted fuel
c) Spent tan
d) Rice husk
Answer: c
Clarification: Spent tan is a nuclear fuel that has been irradiated in a nuclear reactor. Rice husk is obtained from animal waste and briquetted fuel is compressed block of coal dust.
2. Which of the following industrial waste gas is used in creating jet fuel?
a) Nitrogen di oxide
b) Carbon monoxide
c) Sulphur di oxide
d) Hydrogen di sulphide
Answer: b
Clarification: Carbon monoxide is fermented through gas fermentation which forms alcohols and then these alcohols formed are converted into jet fuel by the process of dehydration and hydrogenation.
3. Which of the following is a renewable energy resource?
a) Coal
b) Cow dunk
c) Charcoal
d) Wood
Answer: d
Clarification: Wood is obtained from trees and trees can be replanted easily, so the are renewable form of energy. Examples of wood-pine, cedar etc.
4. From which alcohol does softwood lignin is derived?
a) Coniferyl alcohol
b) Sinapyl alcohol
c) Ethyl alcohol
d) 4, 3 tri butyl alcohol
Answer: a
Clarification: Coniferyl alcohol is a phytochemical which is used as an intermediate in biosynthesis of eugenol. Sinapyl and Coniferyl alcohol can also be used in deriving hardwood lignin.
5. Which of the following fuel is preferred for space heating?
a) Coal tar
b) Diesel
c) Hydrogen gas fuel
d) Wood
Answer: d
Clarification: Wood has high flame emissivity (ratio of the energy radiated from a materials surface to the energy radiated from black body at same temperature and wavelength) due to which it is used in space heating.
6. By which process does the wood charcoal is obtained?
a) Destructive distillation
b) Steam distillation
c) Vacuum distillation
d) Simple distillation
Answer: a
Clarification: In destructive distillation the decomposition of the feedstock of wood is done by heating at high temperature. The wood charcoal so obtained is of good quality.
7. Which of the following does require wood charcoal for its production?
a) Steel alloys
b) Activated carbon
c) Alloys of tin
d) Plaster of Paris
Answer: b
Clarification: Activated carbon finds extensive applications for decolourisation, adsorption of gases and vapours and recovery of solvents from gases and air.
8. Which type of coal is generated by the action of fungi and bacteria?
a) Peat
b) Bituminous
c) Lignite
d) Anthracite
Answer: a
Clarification: It is considered as the first stage of conversion of vegetable debris into coal under water logged conditions by the action of fungi and bacteria. Peat is generally found in high altitude.
9. Which of the following country consist of the largest peat deposit?
a) India
b) Canada
c) USA
d) Russia
Answer: d
Clarification: Russia contains 42% of world’s peat deposits. Ireland also have a large peat content around 16.2 %.
10. Which of the following content does upland type of peat consist?
a) Leaves
b) Twigs
c) Decomposed heaths and mosses
d) Sedges and grasses