676: With reference to the invaders in ancient India, which one of the following is the correct chronological order ?
(a) Greeks - Sakas - Kushans
(b) Greeks - Kushans - Sakas
(c) Sakas - Greeks - Kushans
(d) Sakas - Kushans - Greeks
677: It is possible to produce algae based biofuels, but what is/are the likely limitation(s) of developing countries in promoting this industry?
1. Production of algae based biofuels is possible in seas only and not on continents.
2. Setting up and engineering the algae based biofuel production requires high level of expertise/technology until the construction is completed.
3. Economically viable production necessitates the setting up of large scale facilities which may raise ecological and social concerns.
Select the correct answer using the code given below:
a. 1 and 2 only
b. 2 and 3 only
c. 3 only
d. 1, 2 and 3
678: Consider the following statements:
1. Clean Development Mechanism (CDM) in respect of carbon credits in one of the Kyoto Protocol Mechanisms.
2. Under the CDM, the projects handled pertain only to the Annex-I countries.
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
679: Consider the following statements:
(1) The International Solar Alliance was launched at the United Nations Climate Change Conference in 2015.
(2) The Alliance includes all the member countries of the United Nations.
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
680: Consider the following statements:
1. The Constitution of the United States of America came into force in the year 1810.
2. All revenue bills must originate in the House of Representatives of the US Congress.
3. George W. Bush is the only President in the history of the Unites States of America whose father was also the President of the United States of America.
Which of the following statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) 1 and 2
(d) 2 and 3