831: Radioactive element which has been found to have large reserves in India is:
(a) Thorium
(b) Uranium
(c) Radium
(d) Plutonium
832: Which one of the following distance-time graph (x-t) represents one-dimensional uniform motion ?
(a) (a)
(b) (b)
(c) (c)
(d) (d)
833: An astronaut weighing 100 kg fires a bullet weighing 1 kg with a gun of 10 kg at the speed of 50 metres/second. What will be the recoil velocity of the gun ?
(a) 5 cm/s
(b) 50 cm/s
(c) 0.5 cm/s
(d) 0.05 cm/s
834: Which one of the following statements regarding Asokan stone pillars is incorrect ?
(a) These are highly polished
(b) These are monolithic
(c) The shaft of pillars is tapering in shape
(d) These are parts of architectural structures
835: Assertion (A): The main constituent of the Liquefied Petroleum Gas is methane.
Reason (R): Methane can be used directly for burning in homes and factories where it cab be supplied through pipelines.
(a) Both A and R are individually true and R is the correct explanation of A.
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false.
(d) A is false but R is true.