981: Which one of the following was a corporation of merchants in ancient India ?
(a) Chaturvedimangalam
(b) Parishad
(c) Ashtadikgaja
(d) Manigrama
982: A class starts after lunch at 1 p.m. and lasts till 3.52 p.m. Four periods are over during this interval. After every period, 4 minutes are allowed for going from one classroom to another. What is the exact duration of each period held?
(a) 42 minutes
(b) 41 minutes
(c) 40 minutes
(d) 39 minutes
983: Which of the following best describes the term import cover, sometimes seen in the news?
(a) It is the ratio of value of imports to the Gross Domestic Product of a country
(b) It is the total value of imports of a country in a year
(c) It is the ratio between the value of exports and that of imports between two countries
(d) It is the number of months of imports that could be paid for by a countrys international reserves
984: Which one of the following is useful for biological control of pests?
(a) Honey bees and locusts
(b) Scorpions and spiders
(c) Wasps and birds
(d) Parrots and kites
985: Assertion (A) : In the visible spectrum of light, red light is more energetic than green light.
Reason (R) : The wavelength of red light is more than that of green light.
Code:
(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