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Standard VI

Chemistry

Air Pollutants

In the gases ...

Question

In the gases below, which would react with rain water to produce acid rain?
i. CFCs
ii. Methane
iii. Carbon dioxide

i only

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ii only

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iii only

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i and iii only

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i, ii and iii

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Solution

The correct option is C iii only
Carbon dioxide would react with rainwater to produce acid rain.

The reaction of carbon dioxide with water gives carbonic acid.

$C O_{2} + H_{2} O \to H_{2} C O_{3}$

Hence the correct option is C.

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Similar questions

Match the items given in column I with one or more items given in column II :

$\begin{matrix} Column I & Column II (i) prevents photosynthesis & (a) Sewage dumped in river (ii) Damage ozone layer & (b) Excess fertiliser in fields (iii) Produce acid rain & (c) Carbon dioxide in air (iv) Kill fish by deoxygenating water & (d) Dust in air (v) Causes water borne diseases & (e) CFCs (vi) Leads to global warming & (f) Sulphur dioxide in air \end{matrix}$

Q. 32. Which of the following gases are produced in a biogas plant?
i) Nitrogen
ii) Methane
iii Carbon dioxide
Options:

Q. What happens when:

(Give chemical equations only)
(i) Methane reacts with nitric acid at

400^{o} C

?
(ii) Ethylene reacts with

H I

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(iii) Ethyl alcohol is heated with conc.

H_{2} {S O}_{4}

140^{o} C

Q. Which of the following statements are true about acid rain?
(i) Acid rain is harmful to some plants and animals.
(ii) Acid rain mainly comprises the sulphuric acid and nitric acid.
(iii) Acid rain helps farmers to produce more crops.
(iv) Acid rain corrodes buildings and statues.

(a) Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare

(i) hydrogen chloride

(ii) water

(iii) sodium hydroxide

(iv) hydrochloric acid

(b) The metal which reacts with cold water to produce hydrogen is

(i) magnesium

(ii) aluminium

(iii) calcium

(iv) iron

(i) top

(ii) bottom

(iii) middle

(iv) none

(d) Hydrogen is responsible for producing

(i) heat and light

(ii) hydrogenated oil

(iii) fertilizers

(iv) all of the above

(e) Hydrogen is

(i) combustible

(ii) non-combustible

(iii) supporter of combustion

(iv) neither supporter nor combustible

(f) Water gas is a mixture of

(i) carbon monoxide and oxygen

(ii) carbon monoxide and hydrogen

(iii) hydrogen and oxygen

(iv) hydrogen and nitrogen

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In the gases below, which would react with rain water to produce acid rain?i. CFCsii. Methaneiii. Carbon dioxide

The correct option is C iii onlyCarbon dioxide would react with rainwater to produce acid rain.The reaction of carbon dioxide with water gives carbonic acid.CO2+H2O→H2CO3 Hence the correct option is C.

In the gases below, which would react with rain water to produce acid rain?
i. CFCs
ii. Methane
iii. Carbon dioxide

The correct option is C iii only
Carbon dioxide would react with rainwater to produce acid rain.

The reaction of carbon dioxide with water gives carbonic acid.

$C O_{2} + H_{2} O \to H_{2} C O_{3}$

Hence the correct option is C.