Match the pairs from 'A' and 'B' columns and explain the effect of pollution on human health.

Column 'A' Column 'B'

1. Water containing cobalt a. Mental retardedness

2. Methane gas b. Paralysis

3. Water containing lead c. Inflammation of lungs.

4. Sulphur dioxide d. Skin cancer

5. Nitrogen dixoide e. Irritation of eyes

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Solution

Column 'A' Column 'B'

1. Water containing cobalt b. Paralysis

2. Methane gas d. Skin cancer

3. Water containing lead a. Mental retardedness

4. Sulphur dioxide e. Irritation of eyes

5. Nitrogen dixoide c. Inflammation of lungs

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\begin{matrix} C o l u m n I & C o l u m n I I (i) B o w m a n^{'} s c a p s u l e & (a) R e n a l a r t e r y (i i) C o n t a i n s m o r e C O_{2} a n d l e s s u r e a & (b) R e g u l a t e s a m o u n t o f w a t e r e x c r e t e d (i i i) A n t i d i u r e t i c h o r m o n e & (c) R e n a l v e i n (i v) C o n t a i n s m o r e u r e a & (d) G l o m e r u l u s \end{matrix}

	Column I		Column II
(A)	Peroxyacetyl nitrate	(i)	Global warming
(B)	Polychlorinated biphenyls	(ii)	Photochemical smog
(C)	Dioxides of carbon and sulphur	(iii)	Water pollutant
(D)	IR active molecules	(iv)	Acid rain

Match the items in Column I with those in Column II and write down the matching pairs.

Column I	Column II
(a) Bowman's capsule	(i) Renal artery
(b) Contains more $C O_{2}$ and less urea	(ii) Regulates the amount of water excreted
(c) Antidiuretic hormone	(iii) Renal vein
(d) Contains more urea	(iv) Glomerulus

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