In the following statements, the underlined words are jumbled up. Write them in their correct form.

(a) Air contains 78% ginroten and 21% gonexy.

(b) Vehicles produce high levels of pollutants like carbon dioxide, nitrogen oxides, nobrac moondexi, and mosek

(c) Carbon dioxide, thaneme, nitrous oxide, and water vapor are known as heengrouse sesga.

(d) Gangotri glacier in Himalaya has started melting because of lablog ringwam

(e) Whenever harmful substances such as wagese, toxic chemicals, silt, etc. get mixed with water, the water becomes potdulle.

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Solution

(a) Air contains 78% nitrogen and 21% oxygen

(b) Vehicles produce high levels of pollutants like carbon dioxide, nitrogen oxides, carbon monoxide, and smoke.

(c) Carbon dioxide, methane, nitrous oxide, and water vapor are known as greenhouse gases.

(d) Gangotri glacier in Himalaya has started melting because of global warming.

(e) Whenever harmful substances such as sewage, toxic chemicals, silt, etc. get mixed with water, the water becomes polluted.

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Q. Question 24
In the following statements, the underlined words are jumbled up. Write them in their correct form.
(a) Air contains 78% ginroten and 21% gonexy.
(b) Vehicles produce high level of pollutants like carbon dioxide, nitrogen oxides, nobracmoondexi and mosek.
(c) Carbon dioxide, thaneme, nitrous oxide and water vapour are known as heengrouse sesga.
(d) Gangotri glacier in Himalaya has started melting because of lablog ringwam.
(e) Whenever harmful substances such as wagese, toxic chemicals, silt, etc. get mixed with water, the water becomes potdulle.

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants.

Name one source and one harmful effect of each of the following air pollutants :

(a) Sulphur dioxide

(b) Nitrogen oxides

(d) Chlorofluorocarbons (CFCs)

Question 21
Fill in the blanks with the help of words given in bracket after each sentence.
(a) When air is contaminated by___ substances which have a ___ effect on both the ___ and ___, it is referred to as ___. (air pollution, harmful, living, unwanted, non-living, pollutants).
(b) Many ___ are responsible for causing ___ pollution. Petroleum ___ are a major source of ___ pollutants like ___ and ___. (sulphur dioxide, refineries, industries, nitrogen dioxide, gaseous, liquid, people, air).
(c) While ___ your teeth, leaving the ___ running may waste several ___ of water. (tap, litres, brushing, washing, drops)
(d) Water which is suitable for ___ is called ___ water. (washing, bathing, drinking, potable, soft).
(e) Water which looks clean still has disease carrying ___and ___ impurities. (insects, microorganism, particles, dissolved, harmful).

Q. Fill in the blanks with the help of words given in bracket after each sentence.

(a) When air is contaminated by ________ substances which have a ________ effect on both the ________ and ________, it is referred to as ________.

(air pollution, harmful, living, unwanted, non-living, pollutants).

(b) Many ________ are responsible for causing ________ pollution. Petroleum ________ are a major source of ________ pollutants like ________ and ________.

(sulphur dioxide, refineries, industries, nitrogen dioxide, gaseous, liquid, people, air)

(tap, liters, brushing, washing, drops)

(d) Water which is suitable for _________ is called ________ water.

(washing, bathing, drinking, potable, soft)

(e) Water which looks clean still has disease-carrying ________ and ________ impurities.

(insects, microorganisms, particles, dissolved, harmful).

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Air Pollution

Standard X Chemistry

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