1211: A car runs at a speed of 40 km per hour during the first half of the journey and at a speed of 60 km per hour during the second half of the journey. The average speed of the car is:
(a) 48 kmph
(b) 50 kmph
(c) 52 kmph
(d) 54 kmph
1212: In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the
1. decomposer microorganisms to the surface.
2. nutrients to the surface.
3. bottom-dwelling organisms to the surface.
Which of the statements given above is/are correct ?
(a) 1 and 2
(b) 2 only
(c) 2 and 3
(d) 3 only
1213: Which one of the following statements is true according to 1991 Census data?
(a) U.P. has the highest density of population in India
(b) Himachal Pradesh has the highest female to male sex ratio in India
(c) West Bengal has the highest growth rate of population in India
(d) Bihar has the lowest literacy rate in India
1214: A married couple adopted a male child. A few years later twin boys were born to them. The blood group of the couple is 'AB' positive and 'O' negative. The blood group of the three sons is A positive, B positive, and 'O' positive. The blood group of the adopted son is
(a) A positive
(b) B positive
(c) O positive
(d) Cannot be determined
1215: Which one of the following authorities recommends the principles governing the grants-in-aid of the revenues to the states out of the Consolidated Fund of India?
(a) Finance Commission
(b) Inter-State Council
(c) Union Ministry of Finance
(d) Public Accounts Committee