Question

Which of the following statements are correct?
This question has multiple correct options.
A.Ocean is sink for \[C{O_2}\]
B.Greenhouse effect causes lowering of the temperature of earth’s surface
C.To control $CO$ emission by automobiles, usually, a catalytic converter is fitted into exhaust pipes
D.${H_2}S{O_4}$, herbicides and insecticides form mist.

Answer 1

Hint: Carbon dioxide is soluble in water. Greenhouse effect is the process in which radiation from a planet’s atmosphere warms the planet’s surface or we can say greenhouse effect is the natural phenomenon which warms the earth’s surface.

Complete step by step solution:
Let us first talk about the greenhouse effect.
Greenhouse effect is the process in which radiation from a planet’s atmosphere warms the planet’s surface or we can say greenhouse effect is the natural phenomenon which warms the earth’s surface. Greenhouse effect increases the temperature of the earth because when the sun's radiation reaches the earth then some of its radiation is reflected back but some is absorbed by greenhouse gases. Example of natural greenhouse gases: methane, carbon dioxide, nitrous oxide.
Examples of man-made greenhouse gases are: chlorofluorocarbon, hydrofluorocarbons.
So option B is wrong i.e. Greenhouse effect causes lowering of the temperature of earth’s surface because they increase the temperature of earth surface.
Carbon dioxide is highly soluble in water. In the world there is a continuous cycle of dissolved carbon dioxide in water with carbon dioxide in the atmosphere. Hence Ocean is sunk for \[C{O_2}\]. So option A is correct.
To control $CO$ emission by automobiles, usually, a catalytic converter is fitted into exhaust pipes. Catalytic converter is those which reduces toxic gases and pollutants in exhaust gas from an internal combustion engine into less toxic pollutants catalysing a redox reaction (redox reactions are those reactions in which oxidation and reduction takes place simultaneously). So option C is correct.
Let us first talk about mist.
Mist: It is defined as the cloud which is made of very small drops of water suspended in the atmosphere. Mist is formed when warm and moist air meets sudden cooling.
Herbicides: They are defined as the pesticides which are used to kill unwanted plants.
Insecticides: They are defined as the pesticides which are used to kill insects.
${H_2}S{O_4}$, herbicides and insecticides form mist. Hence option D is right.

Hence option A, C and D are correct options.

Note:
Fog and mist are almost the same but the difference is how far you can see through them. For example: if you can see upto $1000\;m$ then it will be fog and if you can see more than $1000\;m$ then it will be mist.