946: 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
947: There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon?
1. Discharge of nutrients from the estuaries.
2. Run-off from the land during the monsoon.
3. Upwelling in the seas.
Select the Correct answer from the codes given below:
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
948: The United Nations Framework Convention on Climate Change (UNFCCC) is an international treaty drawn at
(a) United Nations Conference on the Human Environment, Stockholm, 1972
(b) UN Conference on Environment and Development, Rio de Janeiro, 1992
(c) World Summit on Sustainable development, Johannesburg, 2002
(d) UN Climate Change Conference, Copenhagen, 2009
949: Which of the following is/are the possible consequence/s of heavy sand mining in riverbeds ?
1. Decreased salinity in the river
2. Pollution of groundwater
3. Lowering of the water-table
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
950: Consider the following statements with reference to Indira Gandhi National Old Age Pension Scheme (IGNOAPS)
1. All persons of 60 years or above belonging to the households below poverty line in rural are eligible
2. The Central Assistance under this Scheme is at the rate of Rs. 300 per month per beneficiary.
Under the Scheme, States have been urged to give matching amounts.
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