1791: Genetic code is made up by the four-letter alphabet forming the pairs:
(a) A--C, C--A, T--G, G--T
(b) A--G, G--A, C--A, T--C
(c) T--G, G--T, A--C, C--A
(d) A--T, T--A, C--G, G--C
1792: Consider the following statements:
1. Baking soda is used in fire extinguishers.
2. Quicklime is used in the manufacture of glass.
3. Gypsum is used in the manufacture of Plaster of Paris.
Which of the statements given above is/are correct ?
(a) 1 and 2
(b) 2 and 3
(c) 1 only
(d) 1, 2 and 3
1793: Which of the following is not favourable for the formation of deltas?
(a) Calm winds
(b) Currents and tides
(c) Sheltered coast
(d) No large lakes in the river course
1794: By which Amendment to the Constitution, the Fundamental Duties of the citizens were specified?
(a) 38th
(b) 40th
(c) 42nd
(d) 44th
1795: The half-life of a radio active element is 5 years. The fraction of the radioactive substance that remains after 20 years is
(a) 1/2
(b) 1/4
(c) 1/8
(d) 1/16