4126: Which one of the following chemicals is responsible for the depletion of ozone layer in the atmosphere?

(a) Chlorofluorocarbons

(b) Nitrous oxide

(c) Sulphur dioxide

(d) Carbon dioxide
4127: Two men A and B have different basic salaries but get equal emoluments. Their allowances are 65% and 80% of their basic salaries respectively. The ratio of their basic salaries is:

(a) 13 : 16

(b) 8 : 9

(c) 12 : 11

(d) 80 : 65
4128: With reference to 'Indian Ocean Rim Association for Regional Cooperation (IOR-ARC)', consider the following statements:

1. It was established very recently in response to incidents of piracy and accidents of oil spills.
2. It is an alliance meant for maritime security only.

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
4129: Consider the following statement:

1. Kitab-I-Nauras, a collection of songs in praise of Hindu deities and Muslim saints, was written by Ibrahim Adil Shah II

2. Amir Khusrau was the originator in India of the early form of the musical style known as Qawali.

Which of these statements is/are correct?

(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
4130: Swaraj as a national demand was first made by:

(a) Bal Gangadhar Tilak

(b) Dadabhai Naoroji

(c) Jawaharlal Nehru

(d) Chitaranjan Das