2586: 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
2587: Consider the following climatic and geographical phenomena:

1. Condensation
2. High temperature and humidity
3. Orography
4. Vertical wind

Thunder Cloud development is due to which of these phenomena?

(a) 1 and 2
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) 1, 2, 3 and 4
2588: Assertion (A) :
Human diet should compulsorily contain Glycrine, Serine and Tyrosin.

Reason (R) :
Essential amino acids cannot be synthesized in the human body.

(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
2589: The correct sequence of the eastward flowing rivers of the peninsular India from north to south is
(a) Subranarekha, Mahanadi, Godavari, Krishana, Pennar, Cauvery and Vagai
(b) Subranarekha, Mahanadi, Godavari, Cauvery, Vagai Pennar
(c) Mahanadi, Subarnarekha, Godavari, Krishna, Cauvery, Pennar and vagai
(d) Mahanadi, Subarnarekha, Krishna, Godavari, Cauvery, Vagai and Pennar
2590: The identity platform `Aadhaar' provides open "Application Programming Interfaces (APIs)". What does it imply?

1. It can be integrated into any electronic device.
2. Online authentication using iris is possible.
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