SELECT * FROM question_mgmt as q WHERE id=587 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=7 AND chapterId=41 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 12th biology Environmental Issues column a

Question: Column A Column B
(a) Catalytic converter (i) Particulate matter
(b) Electrostatic precipitator (ii) Carbon monoxide and nitrogen oxides
(c) Earmuffs (iii) High noise level
(d) Landfills (iv) Solid wastes

Answer:

Column A

Column B

Catalytic converter

(ii)

Carbon monoxide and nitrogen oxides

Electrostatic precipitator

(i)

Particulate matter

Earmuffs

(iii)

High noise level

Landfills

(iv)

Solid wastes

 


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