451: If Rs. 1000 is invested at 12% interest and interest is compounded half yearly, what will be the total amount at the end of one year ?
(a) Rs. 1120.00
(b) Rs. 1123.60
(c) Rs. 1126.20
(d) Rs. 1134.40
452: The variations in temperatures from 0 degree C to 100 degree C with respect to time of two liquids P, Q are shown in the graph given below :
Which one of the following statement is correct ?
(a) During heating, liquid P remained hotter than liquid Q throughout
(b) At no point of time during heating did the two liquids have the same temperature
(c) P attained the temperature of 100 degree C faster than Q
(d) Q attained the temperature of 100 degree C faster than P
453: The water in an open pond remains cool even in hot summer because:
(a) Of continuous evaporation of water
(b) Water radiates heat more rapidly than the atmosphere
(c) Water absorbs heat less rapidly than the atmosphere
(d) Water absorbs heat more rapidly than the atmosphere
454: Three circles are externally tangent to each other. Their radii are 2 inches, 3 inches and 4 inches. The centres of these circles are joined to form a triangle. The length of the largest side of the triangle is
(a) 5 inches
(b) 6 inches
(c) 7 inches
(d) 8 inches
455: Which of the following discoveries is/are associated with Einstein?
(i) Theory of relativity
(ii) Quantum theory
(iii) Radio activity
(iv) Rocket propulsion
(a) (i) & (ii)
(b) (i), (ii) & (iii)
(c) (i), (ii) & (iv)
(d) (i) only