Match the items of Column A with those of Column B.

Sulphur dioxide a 1 Damage ozone layer

Carbon dioxide b 2 Reduces the oxygen-

carrying capacity of the blood

Carbon monoxide c 3 Acid rain

Chlorofluoro-carbons d 4 Greenhouse gas

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Solution

Sulphur dioxide a 3 Acid rain

Carbon dioxide b 4 Greenhouse gas

Carbon monoxide c 2 Reduces the oxygen- carrying capacity of the blood

Chlorofluoro-carbons d 1 Damage ozone layer

(1) Acid rain results when SO2 and NO2 are emitted into the atmosphere and combine with water vapour.

(2) Greenhouse gases include water vapour, methane and majorly carbon dioxide

(3) Carbon monoxide combines with haemoglobin much faster than oxygen thus reducing the oxygen-carrying capacity of the blood.

(4), Chlorofluorocarbons (CFCs) damage ozone layer.

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Question 22
Match the items of Column A with those of Column B.
$\begin{matrix} Column A & Column B (a)Sulphur dioxide & (i)Damage ozone layer (b)Carbon dioxide & (ii) Reduces oxygen carrying-capacity of blood (c)Carbon monoxide & (iii)Acid rain (d)Chlorfluorocarbons & (iv)Greenhouse gas \end{matrix}$

Question 22
Match the items of Column A with those of Column B.
$\begin{matrix} C o l u m n A & C o l u m n B (a) S u l p h u r d i o x i d e & (i) D a m a g e o z o n e l a y e r (b) C a r b o n d i o x i d e & (i i) R e d u c e s o x y g e n c a r r y i n g - c a p a c i t y o f b l o o d (c) C a r b o n m o n o x i d e & (i i i) A c i d r a i n (d) C h l o r f l u o r o c a r b o n s & (i v) G r e e n h o u s e g a s \end{matrix}$

Which of the following air pollutant reduces the oxygen-carrying capacity of blood to a large extent?

(a) carbon dioxide

(b) nitrogen monoxide

(d) sulphur dioxide

Q. Match the following air pollutants in accordance with their environmental effects.

A.Chlorofluorocarbons	E. Acid rain
B. Carbon dioxide	F. Reduces the ability of blood to carry oxygen
C. Sulphur dioxide	G. Green house effect
D. Carbon monoxide	H. Damage ozone layer

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

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

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Ozone Layer Depletion

Standard VI Chemistry

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Sulphur dioxide	a	1	Damage ozone layer
Carbon dioxide	b	2	Reduces the oxygen- carrying capacity of the blood
Carbon monoxide	c	3	Acid rain
Chlorofluoro-carbons	d	4	Greenhouse gas

Match the items of Column A with those of Column B.​ Sulphur dioxide​ a 1 Damage ozone layer​ Carbon dioxide​ b 2 Reduces the oxygen- ​ carrying capacity of the blood​ Carbon ​monoxide​ c 3 Acid rain​ Chlorofluoro-carbons​ d 4 Greenhouse gas​

Match the items of Column A with those of Column B.

Sulphur dioxide a 1 Damage ozone layer

Carbon dioxide b 2 Reduces the oxygen-

carrying capacity of the blood

Carbon monoxide c 3 Acid rain

Chlorofluoro-carbons d 4 Greenhouse gas