991: 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
992: Consider the following statements:
A digital signature is
1. an electronic record that identifies the certifying authority issuing it
2. used to serve as a proof of identity of an individual to access information or server on Internet
3. an electronic method of signing an electronic document and ensuring that the original content is unchanged
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
993: The term "Fourth Estate" refers to:
(a) A very backward State
(b) Judiciary
(c) Parliament
(d) Press
994: With reference to Congress Socialist Party, consider the following statements:
1. It advocated the boycott of British goods and evasion of taxes.
2. It wanted to establish the dictatorship of proletariat.
3. It advocated separate electorate for minorities and oppressed classes.
Which of the statements given above is / are correct?
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None
995: With reference to the cultivation of Khalif crops in India in the last five years, consider the following statements:
1. Area under rice cultivation is the highest.
2. Area under the cultivation of jowar is more than that of oilseeds.
3. Area of cotton cultivation is more than that of sugarcane.
4. Area under sugarcane cultivation has steadily decreased.
Which of the statements given above are correct?
(a) 1 and 3 only
(b) 2, 3 and 4 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4