Q1. The substances which burn and give off heat are called
- ACoal
- Bigniter
- Cwarming
- Dfuel
Show answer & explanation
Answer: D) fuel
Fuel
41 MCQ questions with answers and explanations · page 1 of 2
Test yourself▶ 25 question test
Q2. By passing water vapor over red hot coke, a mixture of carbon monoxide and hydrogen gases is obtained, which is called
- Acoal gas
- Bwater gas
- Cproducer gas
- DBio Gas
Show answer & explanation
Answer: B) water gas
Q3. Which of the following mixtures is called coal gas?
- AH²CH⁴CO
- BH²N², CO
- CH²N²O
- DH²N²CO²
Show answer & explanation
Answer: A) H²CH⁴CO
Q4. The gaseous mixture of carbon monoxide and nitrogen gas is called
- Acoal gas
- Bwater gas
- Cproducer gas
- Dnatural gas
Show answer & explanation
Answer: C) producer gas
Q5. Natural gas mainly contains—
- Amethane
- BEthane
- CPropane
- Dbutane
Show answer & explanation
Answer: A) methane
Q6. The liquefied mixture of normal butane and iso butane is called
- Awater gas
- Bcoal gas
- Cproducer gas
- Dliquefied petroleum gas
Show answer & explanation
Answer: D) liquefied petroleum gas
Q7. For safety reasons, what is filled in the LPG cooking gas cylinder to make it odorous?
- Ahelium
- Bammonia
- Cmercaptan
- DYear
Show answer & explanation
Answer: C) mercaptan
Q8. Gobar Gas mainly contains
- Amethane
- BEthylene
- CAcetylene
- Dcarbon monoxide
Show answer & explanation
Answer: A) methane
Q9. Which gas is mainly present in LPG?
- Amethane
- BCO²
- Cbutane
- DSO²
Show answer & explanation
Answer: C) butane
Q10. Water gas is a combination of what?
- ACO and H²O
- BCO and CO
- CCO and H²
- DCO² and H²
Show answer & explanation
Answer: C) CO and H²
Q11. Which of the following gases released from a biogas plant is used as fuel gas?
- Abutane
- BPropane
- Cmethane
- DAthene
Show answer & explanation
Answer: C) methane
Q12. The main component of LPG is
- Amethane
- BEthane
- CPentane
- Dbutane
Show answer & explanation
Answer: D) butane
Q13. What is the full name of LPG?
- ALiquefied Petroleum Gas
- BLiquefied Petroleum Gas
- Cleaded petroleum gas
- DLow petroleum gas
Show answer & explanation
Answer: B) Liquefied Petroleum Gas
Q14. Why is CNG called eco-friendly?
- AIt contains very little hydrogen
- BIts main component is ethane gas (80-90%).
- CIt contains very little carbon monoxide.
- DThe gases in CNG are not completely burnt, hence the emissions are very low.
Show answer & explanation
Answer: C) It contains very little carbon monoxide.
Q15. Which one of the following has the highest fuel value?
- Ahydrogen
- BCharcoal
- Cnatural gas
- Dgasoline
Show answer & explanation
Answer: A) hydrogen
Q16. Which of the following fuels causes minimum environmental pollution?
- Ahydrogen
- BCoal
- Cdiesel
- DKerosene
Show answer & explanation
Answer: A) hydrogen
Q17. The fuel used to propel rockets is called—
- ABiomass
- BCoke
- Cpropellant
- Dcoal gas
Show answer & explanation
Answer: C) propellant
Q18. Which of the different varieties of coal has the highest percentage of carbon?
- Apeat
- BLignite
- Cbituminous
- DAnthracite
Show answer & explanation
Answer: D) Anthracite
Q19. What is known as 'Brown Coal'?
- Apeat
- BLignite
- Cbituminous
- DAnthracite
Show answer & explanation
Answer: B) Lignite
Q20. It indicates the antiknock properties of a fuel.
- AGolden number
- BNatural numbers
- Coctane number
- DMach number
Show answer & explanation
Answer: C) octane number
Q21. The amount of heat obtained by completely burning one gram of a fuel in air or oxygen is called—
- Acombustion
- Bcalorific value
- Ccalorific value
- Dignition temperature
Show answer & explanation
Answer: C) calorific value
Q22. The necessary conditions for a good fuel are
- AIt should have a high calorific value
- BIt should be easily combustible
- CIts ignition temperature should be appropriate
- Dall of which
Show answer & explanation
Answer: D) all of which
Q23. The necessary conditions for combustion to take place are
- APresence of combustible material
- Bpresence of fuel for combustion
- Cattainment of combustion temperature
- DAll of the above
Show answer & explanation
Answer: D) All of the above
Q24. The lowest temperature at which a substance starts burning is called that substance
- Acalorific value
- Bignition temperature
- Cignition temperature
- Dcritical temperature
Show answer & explanation
Answer: B) ignition temperature
Q25. What type of combustion does respiration
- Arapid combustion
- Bslow combustion
- Cspontaneous combustion
- Dexplosion
Show answer & explanation
Answer: B) slow combustion