Advertisements
Advertisements
प्रश्न
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
उत्तर
Fossil fuels include all the other given terms, i.e. coal, natural gas and petroleum.
APPEARS IN
संबंधित प्रश्न
Explain the process of formation of petroleum.
Name a clean gaseous fuel other than LPG and natural gas.
Although coal and petroleum are produced by the degradation of biomass, even then we need to conserve them. Why?
The poisonous gas which reduces the oxygen-carrying capacity of blood to a large extent is :
(a) SO2
(b) NO
(c) CO
(d) CO2
A man bought a device X which could cook pulses, vegetables and rice without using any fuel like wood, coal, kerosene or LPG, etc. This device did not work at night. It also took a lot of time for cooking.
(a) Name the device X.
(b) What is the source of energy which cooks food in this device?
(c) What is the name of the process which traps energy in this device?
(d) State one advantage (other than saving on fuel) or using such a device for cooking food.
A person buys two electrical devices P and Q for lighting purposes in his house. The device P consumes only 5 units of electricity in a month but device Q consumes 15 units of electricity in a month when used for the same number of hours daily. The device Q wastes a lot of electricity by radiating energy C but P does not do so.
(a) What type of device is (i) P, and (ii) Q?
(b) Name one component which is present in Q but not in P.
(c) Name the energy C.
(d) Which device is more energy efficient : P or Q?
(e) Which fossil fuel is most likely to be conserved if all of us switch over to devices like P?
The term petroleum means ________
Which of the following is not a constituent of petroleum?
Petroleum was formed from organisms
We say fossil fuels will last only for a few hundred years. Comment.
