2296: The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere, because it absorbs
(a) the water vapour of the air and retains its heat
(b) the ultraviolet part of the solar radiation
(c) all the solar radiations
(d) the infrared part of the solar radiation
2297: If the Republic Day in 1980 falls on Saturday, X was born on March 3, 1980 and Y is older to X by four days, then Y's birthday fell on:
(a) Thursday
(b) Friday
(c) Wednesday
(d) None of these
2298: With reference to 'fly ash' produced by the power plants using coal as fuel, which of the following statements is/are correct?
1. Fly ash can be used in the production of bricks for building construction.
2. Fly ash can be used as a replacement for some of the Portland cement concrete.
3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements.
Select the correct answer using the code given below.
(a) 1 and 2
(b) 2 only
(c) 1 and 3
(d) 3 only
2299: Who among the following Indian rulers established embassies in foreign countries on modern lines ?
(a) Haider Ali
(b) Mir Qasim
(c) Shah Alam II
(d) Tipu Sultan
2300: Many transplanted seedlings do not grow because
(a) the new soil does not contain favourable minerals
(b) most of the root hairs grip the new soil too hard
(c) most of the root hairs are lost during transplantation
(d) leaves get damaged during transplantation