4591: In the context of proposals to the use of hydrogen-enriched CNG (H-CNG) as fuel for buses in public transport, consider the following statements:
1. The main advantage of the use of H-CNG is the elimination of carbon monoxide emissions.
2. H-CNG as fuel reduces carbon dioxide and hydrocarbon emissions.
3. Hydrogen up to one-fifth by volume can be blended with CNG as fuel for buses.
4. H-CNG makes the fuel less expensive than CNG.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 4 only
(d) 1, 2, 3 and 4
4592: Consider the following phenomena :
1. Light is affected by gravity.
2. The Universe is constantly expanding.
3. Matter warps its surrounding space-time.
Which of the above is/are the prediction/predictions of Albert Einstein's General Theory of Relativity, often discussed in media ?
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
4593: The terms `Marginal Standing Facility Rate and `Net Demand and Time Liabilities, sometimes appearing in news, are used in relation to
(a) banking operations
(b) communication networking
(c) military strategies
(d) supply and demand of agricultural products
4594: Consider the following statements:
India continues to be dependent on imports to meet the requirement of oilseeds in the country because:
1. Farmers prefer to grow food grains with highly remunerative support prices.
2. Most of the cultivation of oilseed crops continues to be dependent on rainfall.
3. Oils from the seeds of tree origin and rice bran have remained unexploited.
4. It is far cheaper to import oilseeds than to cultivate the oilseed crops.
Which of the statements given above are correct?
(a) 1 and 2
(b) 1, 2 and 3
(c) 3 and 4
(d) 1, 2, 3 and 4
4595: Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the above add carbon dioxide to the carbon cycle on Earth
(a) 1 and 4 only
(b) 2 and 3 only
(c) 2, 3 and 4 only
(d) 1, 2, 3 and 4