Air Pollution
Trending Questions
Contamination of air by unwanted substances is called ______.
air utilisation
air pollution
- air purification
air conservation
___(i)___ is a thick, dark, strong-smelling liquid found deep in the earth. Unrefined (i) is called ___(ii)___ and ___(iii)___ gets collected over (i) inside the earth. During fractional distillation of (i), the fraction with ___(iv)___boiling point condenses in the uppermost region and uncondensed ___(v)___ comes out of the fractionating tower.
- (i)–Kerosene; (ii)–Petrol;
(iii)-Hydrogen gas; (iv)-Lowest;
(V)-Methane gas - (i)-Petroleum; (ii)–Crude oil;
(iii)-Natural gas; (iv)-Lowest;
(V)-Petroleum gas - (i)–Petrol; (ii)–Petroleum;
(iii)-Methane gas; (iv)-Highest;
(V)-Natural gas - (i)-Petrol; (ii)-Petroleum;
(iii)-Hydrogen gas; (iv)-Highest;
(V)-Natural gas
Which of the following represents the correct composition of air by volume?
Nitrogen - 21%, oxygen - 78% and other gases such as carbon dioxide, argon, methane, ozone and water vapour are present in small quantities.
Nitrogen - 60%, oxygen - 38% and other gases such as carbon dioxide, argon, methane, ozone and water vapour are present in small quantities.
Nitrogen - 21%, oxygen - 78% and other gases such as carbon dioxide, argon, methane, ozone and water vapour are present in small quantities.
Nitrogen - 38%, oxygen - 60% and other gases such as carbon dioxide, argon, methane, ozone and water vapour are present in small quantities.
- Burning of firewood
- Automobile exhaust
- Windmills
- Power plants
A. Burning of Coal
B. Burning of Liquefied Petroleum Gas
C. Burning of Compressed Natural Gas
D. Exhaust from factories and industries
Which are the correct causes in this list?
- A, B and C
- All of the above
- A and B
- Only A
What is the best method to avoid pollution, if you are using plastic bags?
Throw the plastic bags into the river
Bury the plastic bags in the soil
Use biodegradable plastic bags
Burn the plastic bags in a rubbish dump
Identify the chemical formula of Ozone gas.
[O]
O2
O3
O1.5
- False
- True
Which of the following gas is released by refrigerators and air conditioners?
Water gas
Chlorofluorocarbons
Hydrochloric acid
Methane
- False
- True