Answer: B) 3 Explanation: According to the given data, P + Q = 41 ......(1) R - 1 = P + 2 R = P + 3 and P + 4 = Q - 1 => Q = P + 5 ....(2) From (1)&(2) P = 18 Q = 18 + 5 = 23 R = 18 + 3 = 21 => P/S = 3/4 => S = 4/3 x 18 = 24 Required Difference = S - R = 24 - 21 = 3.

Answer: C) Umbrella Explanation: Yes, when rain starts falling umbrella goes up for pretecting us from wetting.

Answer: B) Accoustics Explanation: Accoustics is a subject deals with the Study of sound   Aesthetics is a Philosophy of fine arts   The science or art of flight is called Aeronautics   The science of soil management is called Agronomy.

Answer: C) 3 Explanation: Physics has 5 laws. But the 3 laws of Newton has been clubbed together under one Law. Therefore there are 3 Newtons laws of Physics. They are ::   1. Newtons Laws of Motion     a. First Law of Motion     b. Second Law of Motion     C. Third Law of Motion   2. Newtons Law of Cooling   3. Newtons Law of Gravitation.

Answer: B) +ve Explanation: We know the Mathematical rules that   ++ = ++- = --+ = --- = +

Answer: A) +6 Explanation: We will rewrite the formula as an equation. 2K + 2Cr + 7O = 0 The zero comes from there being no overall charge on the compound. Each oxidation number is represented by the element's symbol. Since this compound is not a peroxide or superoxide, the oxidation value for O is -2 K being in group 1 has a +1 charge and therefore has an oxidation number of K is +1 Now, by putting known values in we have: 2(+1) + 2(Cr) + 7(-2) = 0 2 + 2Cr -14 = 0 2Cr = +12 Cr = +6.

Answer: C) Sound waves Explanation: Light and Radio waves are both different frequency/wavelengths of electromagnetic radiation, which consists of two components electric and magnetic of perpendicular, transverse waves.    Sound, on the other hand, is a longitudinal wave which oscillates parallel to it's medium (back and forth instead of up and down).

Answer: B) 437 Explanation: Given number series is 514   470   ?   415   404       Here the pattern it follows is   514   514 - 44 = 470   470 - 33 = 437   437 - 22 = 415   415 - 11 = 404   Hence, the missing number in the given number series is 437.