4441: Which one of the following is the process involved in photosynthesis ?
(a) Potential energy is released to form free energy
(b) Free energy is converted into potential energy and stored
(c) Food is oxidized to release carbon dioxide and water
(d) Oxygen is taken, and carbon dioxide and water vapour are given out
4442: What is the principle by which a cooling system (Radiator) in a motor car works ?
(a) Convection
(b) Conduction only
(c) Both conduction and radiation
(d) Radiation only
4443: Match List-I with List-II and Select the correct answer using the code given below the lists:
List-I(Persoan) List-II(Position/Organization)
A. Nancy Pelosi 1. WTO
B. Margaret Chan 2. Speaker, U.S. House of Representatives
C. Pascal Lasmy 3. WHO
D. Steve Ballmer 4. Microsoft
(A) 2 1 3 4
(B) 4 3 1 2
(C) 4 1 3 2
(D) 2 3 1 4
4444: Assertions (A) :
A mixture of salt and ice gives temperature below 0°C.
Reason (R) :
The salt raises the freezing point of ice.
In the context of the above two statements, which one of the following is correct?
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and Rare true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
4445: What is the most important factor for the growth of pests in stored grains?
(a) The moisture of grains
(b) The temperature of grains
(c) The moisture and temperature of grains
(d) None of the above