191: 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
192: A walks around a circular field at the rate of one round per hour while B runs around it at the rate of six rounds per hour. They start in the same direction from the same point at 7.30 a.m. They shall first cross each other at
(a) 8.30 a.m.
(b) 8.10 a.m.
(c) 7.48 a.m.
(d) 7.42 a.m.
193: When the Couple Protection Rate is going up
(a) birth rate must necessarily fall
(b) birth rate will fall only if couples are of younger age
(c) death rate must necessarily fall
(d) infant mortality rate must be falling
194: With reference to Rowlatt Satyagraha, which of the following statements is/ are correct?
1. The Rowlatt Act was based on the recommendations of the 'Sedition Committee'.
2. In Rowlatt Satyagraha, Gandhiji tried to utilize the Home Rule League.
3. Demonstrations against the arrival of Simon Commission coincided with Rowlatt Satyagraha.
Select the correct answer using the code given below.
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
195: Which one of the following is a historical work by Hemachandra?
(a) Dvasraya-kavya
(b) Prabandhachintamani
(c) Kamatakabhasabhushana
(d) Samaranganasutradhara