221: Consider the following:

1. Oxides of Hydrogen

2. Oxides of Nitrogen

3. Oxides of Sulphur

Which of the above causes/cause acid rain ?

(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
222: Consider the following statements regarding power sector in India :

I. The installed capacity of power generation is around 95000 MW.
II. Nuclear plants contribute nearly 15% of total power generation.
III. Hydroelectricity plants contribute nearly 40% of total power generation.
IV. Thermal plants at present account for nearly 80% of total power generation.

Which of these statements is/are correct ?

(a) I only
(b) II and III
(c) III and IV
(d) I and IV
223: Which one of the following pairs is correctly matched ?

(a) Nawgaon : Maharashtra

(b) Palamau : Gujarat

(c) Gir : Madhya Pradesh

(d) Amravati : West Bengal
224: The last major extension of British Indian territory took place during the time of

(a) Dufferin

(b) Dalhousie

(c) Lytton

(d) Curzon
225: Which one of the following is a modified stem ?
(a) Carrot
(b) Sweet Potato
(c) Coconut
(d) Potato