1726: When iron rusts, the weight:
(a) Increases
(b) Decreases
(c) Remains the same
(d) First increases then decreases
1727: Consider the following statements :
1. In November, 2006, DRDO successfully conducted the interception test using Prithvi-II missile.
2. Prithvi-II is a surface to surface missile and can be deployed to guard the metros against air attacks.
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
1728: Different seasons are formed because:
(a) Sun is moving around the earth
(b) Of revolution of the earth around the sun on its orbit
(c) Of rotation of the earth around its axis
(d) All of the above
1729: Assertion (A) :
Mangroves are very specialised forest ecosystems of tropical and subtropical regions bordering certain sea coasts.
Reason (R) :
They stabilise the shoreline and act as bulwark against encroachments by sea.
In the context of the above two statements, which one of the following is correct ?
(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
1730: Consider the following statements:
1. National Thermal Power Corporation has diversified into hydropower sector.
2. Power Grid Corporation of India has diversified into telecom sector.
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