4521: A car travels the first one-third of a certain distance with a speed of 10 km/hr, the next one-third distance with a speed of 20 km/hr and the last one-third distance with a speed of 60 km/hr. The average speed of the car for the whole journey is
(a) 18 km/hr
(b) 24 km/hr
(c) 30 km/hr
(d) 36 km/hr
4522: Among the Indian languages, which one is spoken maximum in the world after Hindi?
(a) Malayalam
(b) Tamil
(c) Telugu
(d) Bengali
4523: 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
4524: Among the four pairs given below which one consists of a correct combination of dignitaries who became Vice-Presidents after having held diplomatic posts like Ambassadors and High Commissioners?
(a) Dr. S. Radhakrishnan and G.S. Pathak
(b) Dr. S. Radhakrishnan and V.V. Giri
(c) Dr. Zakir Hussain and K.R. Narayanan
(d) B.D. Jatti and K.R. Narayanan
4525: Economic growth in country X will necessarily have to occur if
(a) there is technical progress in the world economy
(b) there is population growth in X
(c) there is capital formation in X
(d) the volume of trade grows in the world economy