561: A person starts from a point A and travels 3 km eastwards to B and then turns left and travels thrice that distance to reach C. He again turns left and travels five times the distance he covered between A and B and reaches his destination D. The shortest distance between the starting point and destination is
(a) 18 km
(b) 16 km
(c) 15 km
(d) 12 km
562: What is the approximate percentage of persons above 65 years of age in India's current population?
(a) 14-15%
(b) 8-9%
(c) 11-12%
(d) 5-6%
563: Atmospheric temperature increases at the higher altitudes due to:
(a) Convection
(b) Radiation
(c) Conduction
(d) Inversion
564: Indonesian forest fire in 1997 was caused by
(a) greenhouse effect
(b) depletion of ozone layer
(c) El Nino effect
(d) None of the above
565: Consider the following statements :
1. The series of the International Paper Sizes is based on A0 size Whose area is 0.5 cm2 (approximately).
2. The area of A4 size paper is 1/8th of that of the A0 size paper.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2