1511: In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosol into stratosphere?
(a) Creating the artificial rains in some regions
(b) Reducing the frequency and intensity of tropical cyclones
(c) Reducing the adverse effects of solar wind on the Earth
(d) Reducing the global warming
1512: Tides occur in the oceans and seas due to which among the following?
1. Gravitational force of the Sun
2. Gravitational force of the Moon
3. Centrifugal force of the Earth
Select the correct answer using the code given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
1513: Feeding of milk cattle with cotton seeds:
(a) Increases fat content temporarily
(b) Decreases fat content temporarily
(c) May decrease or increase fat content
(d) Causes no change in fat content
1514: As per Indian Protocol, who among the following ranks highest in the order of precedence?
(a) Deputy Prime Minister
(b) Former President
(c) Governor of a State within his state
(d) Speaker of Lok Sabha
1515: In the given figure, all line segments of the shaded portion are of the same length and at right angles to each other. The same can be cut out of a board of side 10 cm. What is the area of the shaded portion ?
(a) 36 cm2
(b) 48 cm2
(c) 52 cm2
(d) 64 cm2