271: In October 1920, who of the following headed a group of Indians gathered at Tashkent to set up a Communist Party of India?
(a) M. C. Chagla
(b) H. K. Sarkar
(c) M. N. Roy
(d) P. C. Joshi
272: Participatory Notes (PNs) are associated with which one of the following ?
(a) Kyoto Protocol
(b) Foreign Institutional Investors
(c) Consolidated Fund of India
(d) United Nations Development Programme
273: A person purchases 100 pens at a discount of 10%. The net amount of money spent by the person to purchase the pens is Rs. 600. The selling expenses incurred by the person are 15% on the net cost price. What should be the selling price for 100 pens in order to earn a profit of 25%?
(a) 862.50
(b) 802.50
(c) 811.25
(d) 875
274: Assertion (A):
Unsaturated fats are more reactive compared with the saturated fats.
Reason (R):
Unsaturated fats have only single bonds in their structure.
(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
275: Recently, there has been a concern over the short supply of a group of elements called 'rare earth metals'. Why?
1. China, which is the largest producer of these elements, has imposed some restrictions on their export.
2. Other than China, Australia, Canada and Chile, these elements are not found in any country.
3. Rare earth metals are essential for the manufacture of various kinds of electronic items and there is a growing demand for these elements.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3