4101: A wooden block is floating in water. If 4/5 of its volume is immersed in water and volume of the water displaced is 800 ml, the volume of the block is
(a) 1140 ml
(b) 200 ml
(c) 800 ml
(d) 1000 ml
4102: Which one of the following brings out the publication called "Energy Statistics" from time to time?
(a) Central Power Research Institute
(b) Planning Commission
(c) Power Finance Corporation Ltd.
(d) Central Statistical Organization
4103: With reference to technologies for solar power production, consider the following statements :
1. Photovoltaics is a technology that generates electricity by direct conservation of light into electricity, while Solar Thermal is a technology that utilizes the Sunss rays to generate heat which is further used in electricity generation process.
2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC).
3. India has manufacturing base for Solar Thermal technology, but not for Photovoltaics.
Which of the statements given aboveis/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1, 2 and 3
(d) None
4104: Which of the following is not a tenet of Gandhian Socialism:
(a) Social justice
(b) Concern for the poor but not hatred for the rich
(c) Equality of opportunities of all
(d) Nationalisation of all means of production and distribution
4105: Assertion (A) :
The southern half of India lies within the tropics and the northern half belongs to the warm temperate zone
Reason (R) :
The tropic of cancer runs almost halfway through India
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true