Question

In which of the following pairs, both of them are common greenhouse gases?
(A) Oxygen, water vapour
(B) Methane, Carbon Dioxide
(C) Ozone, Sulphur Dioxide
(D) Nitric Oxide, Chlorofluorocarbons

Answer 1

To answer this question, we need to understand the greenhouse gases that are present in the environment. Greenhouse gases are gases that trap heat in the atmosphere. Each of these gases has a varying period of time in the atmosphere, ranging from a few years to thousands of years.

Complete answer:
The greenhouse effect is a natural phenomenon that causes the Earth's surface to get warmer. When sunlight strikes the Earth's atmosphere, some of it is reflected back to space, while the remainder is absorbed and re-radiated by greenhouse gases.
The absorbed energy warms the Earth's atmosphere and surface. This mechanism keeps the Earth's temperature roughly 33 degrees Celsius higher than it would be otherwise, allowing life to exist on the planet.
Even in the winter, a greenhouse maintains a comfortable temperature inside. Sunlight shines into the greenhouse during the day, warming the plants and air inside. It gets cooler outside at night, but the greenhouse keeps fairly warm inside. This is due to the greenhouse's glass walls trapping the Sun's heat.
Water vapour, carbon dioxide, methane, nitrous oxide, ozone, and some man-made substances like chlorofluorocarbons are examples of greenhouse gases (CFCs).
So, the correct option is (B).

Note:
The amount of a given gas in the air is referred to as concentration or abundance. Higher concentrations in the atmosphere result from increased greenhouse gas emissions. The concentrations of greenhouse gases are measured in parts per million, billions, and trillions. One drop of water diluted into nearly 13 gallons of liquid equals one part per million (roughly the fuel tank of a compact car).