1621: Each of 2 women and 3 men is to occupy one chair out of 8 chairs, each of which is numbered from 1 to 8. First, women are to occupy any two chairs from those numbered 1 to 4; and then 3 men would occupy any three chairs out of the remaining 6 chairs. What is the maximum number of different ways in which this can be done ?
(a) 40
(b) 132
(c) 1440
(d) 3660
1622: Superconductors are so called because they
(a) Efficiently conduct heat from one hot body to another
(b) Offer no resistance to conduction of heat at high temperatures
(c) Offer no resistance to conduction of electricity at low temperatures
(d) Produce high temperatures while conducting electricity
1623: If X = -2, then X3 - X2 - X - 1 is equal to
(a) 1
(b) -3
(c) -11
(d) -15
1624: Which of the following features of DNA makes in uniquely suited to store and transmit genetic information from generation to generation ?
(a) Complementarity of the two stands
(b) Double helix
(c) Number of base-pairs per turn
(d) Sugar-phosphate backbone
1625: Consider the following historical places:
1. Ajanta Caves
2. Lepakshi Temple
3. Sanchi Stupa
Which of the above places is / are also known for mural paintings?
(a) 1 only
(b) 1 and 2 only
(c) 1, 2 and 3
(d) None