581: 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
582: The high density of population in Nile Valley and Island of Java is primarily due to

(a) intensive agriculture
(b) industrialisation
(c) urbanisation
(d) topographic constraints
583: Assertion (A) :

Activated charcoal is used for decolourising sugar solution.

Reason (R) :

Activated charcoal absorbs the impurities on its surface.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are 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
584: Consider the following :

1. Assessment of land revenue on the basis of nature of the soil and the quality of crops

2. Use of mobile cannons in warfare

3. Cultivation of tobacco and red chillies

Which of the above was/were introduced into India by the English?

(a) 1 only
(b) 1 and 2
(c) 2 and 3
(d) None
585: The radical wing of the Congress Party, with Jawaharlal Nehru as one of its main leaders, founded the 'Independence for India League' in opposition to

(a) the Gandhi-Irwin Pact

(b) the Home Rule Movement

(c) the Nehru Report

(d) the Montford Reforms