Questions
Natural gas widely used in automobiles is :
- LPG
- PTNG
- CNG
- MNG
All are natural sources of energy except
- Solar energy
- Electrical energy
- Wind energy
- All the above
The components of petroleum which are separated during refining can be called
- Constituents
- Volatile parts
- Residues
- Fraction
We can prevent energy crisis by using
- Energy judiciously
- Only biogas as fuel
- Not using energy at all
- Unreasonable use of energy
Coal is produced inside the earth millions of year ago by
- Aerobic thermal degradation of cellulosic material
- Anaerobic thermal degradation of cellulosic material
- Aerobic destructive distillation of wood
- Anaerobic fractional distillation of wood
Coke is better fuel than coal because :
- it burns without smoke
- it burns to produce heat
- it is used for domestic cooking
- it burns with useful smoke
Petroleum is a mixture of
- Hydrocarbons
- Carbon and hydrogen
- Oxygen and nitrogen
- Oxygen, sulphur and carbon
Nowadays addition of lead tetraethyl to petrol engines is banned because
- Lead works as anti knock agent
- Lead is toxic
- Lead works as stimulation agent for engine
- Lead is expensive
Petroleum is also known as
- Noble liquid
- Inert substance
- Black gold
- Black diamond
Co is produced on
- Complete combustion of coal
- Fractional distillation of petroleum
- Incomplete combustion of coal
- Distillation of water
Excessive use of coal & petroleum may lead to
- Energy crisis
- Acid rain
- Greenhouse effect
- All of them
A thick black liquid formed by heating coal in the absence of air
- Petroleum
- Coke
- Coal tar
- Charcoal
coal and petroleum can be categorised as
- replenishable natural resource
- living natural resources
- limitless natural resources
- non living natural resources
coal contains mainly
- calcium
- carbon
- charcoal
- coke
Conversion of dead trees and other plants into coal is called
- Refining
- Carbonization
- Destructive distillation
- decarbonisation
a pure form of carbon is
- producer gas
- coal gas
- coke
- coal tar
Petroleum is a mixture of hydrocarbons and boiling point of hydrocarbon increases with
- increase in the number of hydrogen atoms
- increase in the number of carbon atoms
- decrease in the number of carbon atoms
- decrease in the number of hydrogen atoms
when heated in air, coal burns to produce
- carbon dioxide gas
- oxygen gas
- chlorofluorocarbons
- carbonates
Lead added to petrol engines works as
- Anti knock agent
- Agent to increase combustion rate
- Accelerant
- Stimulant
Coke is used for
- Formation of coal
- Extraction of metals
- Refining of oil
- Fractional distillation of retroleum