1786: The following are the rulers of the slave dynasty:

I. Ghiyas-ud-din Balban

II. Iltutmish

III. Qutb-ud-din Aibak

IV. Nasir-ud-din Mahmud

The correct order in which these sultans ruled over India is

(a) II, III, I, IV

(b) I, IV, II, III

(c) IV, I, II, III

(d) III, II, IV, I
1787: Which of the following is/are the principal feature(s) of the Government of India Act, 1919?

1. Introduction of dyarchy in the executive government of the provinces

2. Introduction of separate communal electorates for Muslims

3. Devolution of legislative authority by the centre to the provinces

Select the correct answer using the codes given below :

(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
1788: Which of the following can be found as pollutants in the drinking water in some parts of India?

1. Arsenic
2. Sorbitol
3. Fluoride
4. Formaldehyde
5. Uranium

Select the correct answer using the codes given below.

(a) 1 and 3 only
(b) 1, 3 and 5 only
(c) 2, 4 and 5 only
(d) 1, 2, 3, 4 and 5
1789: Which of the following is contained in the Concurrent List?

(a) Forests

(b) Education

(c) Police

(d) Agriculture
1790: The clouds float in the atmosphere because of their low

(a) temperature

(b) velocity

(c) pressure

(d) density