Subject :NSO Class : Class 6
Which of the following statements are true about acid rain ?
(i) Acid rain has harmful effects on the living beings.
(ii) Acid rain mainly comprises of H2SO4 and HNO3.
(iii) Greenhouse gases are mainly responsible for causing acid rain.
(iv) Acid rain causes damage to buildings.
A (i) and (ii) only
B (i) and (iii) only
C (i), (iii) and (iv) only
D (i), (ii) and (iv) only
but here option C is also true ,so there have the option as 'all of these'.
Ans 1:
Class : Class 3
D
Ans 2:
Class : Class 6
all are correct
Ans 3:
Class : Class 6
ans is also D
Ans 4:
Class : Class 8
Answer is D