516: Why does the Government of India promote the use of 'Neem-coated Urea' in agriculture?
(a) Release of Neem oil in the soil increases nitrogen fixation by the soil microorganisms
(b) Neem coating slows down the rate of dissolution of urea in the soil
(c) Nitrous oxide, which is a greenhouse gas, is not at all released into atmosphere by crop fields
(d) It is a combination of a weedicide and a fertilizer for particular crops
517: Microbial fuel cells are considered a source of sustainable energy, Why ?
1. They use living organisms as catalysts to generate electricity from certain substrates.
2. They use a variety of inorganic materials as substrates.
3. They can be installed in waste water treatment plants to cleanse water and produce electricity.
Which of the Statements given above is/are correct?
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
518: Cognizable offence refers to an offence where:
(a) Arrests can be made without warrant.
(b) Arrests can be made with warrant.
(c) It is under the jurisdiction of a court.
(d) Police can register a case without formal complaint.
519: Shirin Ebadi, who won the Nobel Peace Prize in 2003, is from:
(a) Iraq
(b) Nigeria
(c) Iran
(d) Libya
520: Consider the following pairs : National Cities Highway Connected
1. NH 4: Chennai and Hyderabad
2. NH 6: Mumbai and Kolkata
3. NH 15: Ahmedabad and Jodhpur
Which of the above pairs is/are correctly matched?
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None