1461: Assertion
Carbon dioxide in air is necessary for sustaining life
Reason
Carbon dioxide is assimilated in carbohydrates in photosynthesis
(a) if A and R both are correct and R is the correct explanation of A
(b) if A and R both are correct but R is not the correct explanation of A
(c) if A is correct and R is incorrect
(d) if A is incorrect and R is correct
1462: Itaipu Dam built on the River Parana is one of the largest dams in the world. Which of the following two countries have this as a joint project?
(a) Colombia and Paraguay
(b) Paraguay and Ecuador
(c) Brazil and Paraguay
(d) Brazil and Peru
1463: The two branches of a plant give two different fruits :- tomatoes and brinjals. This can be explained:
(a) By nature's freak
(b) By grafting one with the other
(c) By hybridisation
(d) Both A and B
1464: Which of the following pairs is/are correctly matched ? Spacecraft Purpose
1. Cassini -Huygens Orbiting the: Venus and transmitting data to the Earth
2. Messenger: Mapping and investigating the Mercury
3. Voyager 1 and 2: Exploring the outer solar system
Select the correct answer using thecode given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
1465: In the above map, the black marks show the distribution of
(a) Asbestos
(b) Gypsum
(c) Limestone
(d) Mica