4081: Total internal reflection can take place when light travels from
(a) diamond to glass
(b) water to glass
(c) air to water
(d) air to glass
4082: Consider the following tasks:
1. Superintendence, direction and conduct of free and fair elections.
2. Preparation of electoral rolls for all elections to the Parliament, State Legislatures and the Office of the President and the Vice-President.
3. Giving recognition to political parties and allotting election symbols to political parties and individuals contesting the election.
4. Proclamation of final verdict in the case of election disputes.
Which of the above are the functions of the Election Commission of India?
(a) 1, 2 and 3
(b) 2, 3 and 4
(c) 1 and 3
(d) 1, 2 and 4
4083: Which one of the following is a modified stem ?
(a) Carrot
(b) Sweet Potato
(c) Coconut
(d) Potato
4084: Which one of the following statements is correct with reference to our solar system ?
(a) The Earth is the densest of all the planets in our solar system
(b) The predominant element in the composition of Earth is silicon
(c) The Sun contains 75 per cent of the mass of the solar system
(d) The diameter of the Sun is 190 times that of the Earth
4085: In which one among the following is the speed of sound maximum ?
(a) Air at 100 degree celcius
(b) Air at 0 degree celcius
(c) Wood
(d) Water