1666: Which one of following is produced during the formation of photochemical smog?

(a) Hydrocarbons

(b) Nitrogen Oxides

(c) Ozone

(d) Methane
1667: Consider the following statements:

1. The first telegraph line in India was laid between Kolkata (formerly Calcutta) and Diamond Harbour.

2. The first Export processing zone in India was set up in Kandla.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
1668: Why did Buddhism start declining in India in the early medieval times ?

1. Buddha was by that time considered as one of the incarnations of Vishnu and thus became a part of Vaishnavism.

2. The invading tribes from Central Asia till the time of last Gupta king adopted Hinduism and persecuted Buddhists.

3. The Kings of Gupta dynasty were strongly opposed to Buddhism.

Which of the statements given above is/are correct ?
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
1669: Which of the following are matters on which a constitutional amendment is possible only with the ratification of the legislatures of not less than one-half of the States ?

I. Election of the President

II. Representation of States in Parliament

III. Any of the Lists in the 7th Schedule

IV. Abolition of the Legislative Council of a State

Choose the correct answer from the codes given below :

Codes :

(a) I, II and III

(b) I, II and IV

(c) I, III and IV

(d) II, III and IV
1670: Match List I (Drugs / Chemicals) with List II (Their uses) and select the correct answer using the codes given below the Lists :

List I---------------List II

I. Atropine---------(A) Local anaesthesia

II. Ether------------(B) Heart trouble

III. Nitroglycerine---(C) Dilation of pupil

IV. Pyrethrin--------(D) Mosquito control

Codes:

(a) I-A, II-C, III-B, IV-D
(b) I-A, II-C, III-D, IV-B
(c) I-C, II-A, III-D, IV-B
(d) I-C, II-A, III-B, IV-D