4151: Consider the following statements in respect of a jet engine and a rocket:
1. A jet engine uses the surrounding air for its oxygen supply and so is unsuitable for motion in space.
2. A rocket carries its own supply of oxygen in the gas form, and fuel.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
4152: The Indian national movement became organised for the first time in
(a) 1885
(b) 1857
(c) 1905-06
(d) 1916-17
4153: In a particular region in India, the local people train the roots of living trees into robust bridges across the streams. As the time passes, these bridges become stronger. These unique 'living root bridges' are found in
(a) Meghalaya
(b) Himachal Pradesh
(c) Jharkhand
(d) Tamil Nadu
4154: For pasteurization by the Flash Method, milk is heated to a temperature of:
(a) 0°C
(b) 100°C
(c) - 4°C
(d) 72°C
4155: As per the Human Development Index given by UNDP, which one of the following sequences of South Asian countries is correct, in the order of higher to lower development?
(a) India--Sri Lanka--Pakistan--Maldives
(b) Maldives--Sri Lanka--India--Pakistan
(c) Sri Lanka--Maldives--India--Pakistan
(d) Maldives--India--Pakistan--Sri Lanka