391: Amit starts from a point a and walks to another points B, and then returns from B to A by his car and thus takes a total time of 6 hours and 45 minutes. If he had driven both ways in his car, he would have taken 2 hours less. How long would it take for him to walk both ways ?
(A) 8 hours 45 minutes
(B) 8 hours 30 minutes
(C) 7 hours 45 minutes
(D) 8 hours 15 minutes
392: Which one of the following pairs is not correctly matched?
(a) Japan : Nikkei
(b) UK : FTSE
(c) USA : Nasdaq
(d) Singapore : Shcomp
393: Vinegar is an aqueous solution of
(a) oxalic acid
(b) citric acid
(c) acetic acid
(d) hydrochloric acid
394: If the capital stock was everlasting, then the rate of depreciation would be
(a) High
(b) Low
(c) Infinite
(d) Zero
395: The path of Halley's comet in its orbit around the sun is
(a) Parabolic
(b) Hyperbolic
(c) Elliptical
(d) Circular