Advertisements
Advertisements
Question
State whether the following is True or False.
Coal takes millions of years to form.
Options
True
False
Solution
True
APPEARS IN
RELATED QUESTIONS
"The calorific value of cooking gas (LPG) is 50 kJ/g". What does it mean?
An examples of a renewable source of energy is:
(a) petrol
(b) natural gas
(c) biogas
(d) kerosene
A non-renewable source of energy is:
(a) wood
(b) alcohol
(c) hydrogen gas
(d) natural gas
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
Name any one hydrocarbon fraction obtained during the fractional distillation of petroleum which is used as a domestic fuel.
State one important use of CNG these days.
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
Explain how, sun is considered to be the ultimate source of fossil fuels
Which of the following is not produced by the burning of fossil fuels?
(a) nitrogen oxides
(b) sulphur oxides
(c) sodium oxides
(d) carbon oxides
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name another element which is usually found in combination with X in fossil fuels.
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
Name the substance X.
Which of the following is needed for the formation of biogas from cow-dung and which not?
Water, Oxygen
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
Which produced of the nuclear fission of uranium-235 is utilised to cause further fission of its nuclei?
Name a few major producers of petroleum in the world.
Choose the odd one:
Which of the following is a pair of exhaustible natural resources?
Match the items given in Column I with the items of Column II.
| Column I | Column II |
| (a) Used for road surfacing | (i) Black gold |
| (b) Natural gas | (ii) Vaseline and candles |
| (c) Petroleum | (iii) Bitumen |
| (d) Paraffin wax | (iv) CNG |
