3946: A cubic metre of water at 0° C is solidified into ice. Density of ice is 0.96 of water at 0° C. Which of the following deductions are true?
I. Water expands when solidified.
II. Ice will float in water at 0° C with half its volume above the surface.
III. Density of all liquids are higher than its density when solidified.
(a) I only
(b) II only
(c) III only
(d) I and II
3947: Distribution of electric power from one place to another is done at high A.C. voltage because:
(a) Wastage of electricity is minimised
(b) Stealing of electric wires is prevented
(c) Electricity spreads in very short time
(d) It adds brightness
3948: Consider the following statements :
1. On the planet Earth, the fresh water available for use amounts to about less than 1% of the total water found.
2. Of the total fresh water found on the planet Earth 95% is bound up in polar ice caps and glaciers.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
3949: Assertion (A) :
Babur wrote his memoirs in Turki.
Reason (R) :
Turki was the official language of the Mughal Court.
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 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
3950: A man starts walking in the north-easterly direction from a particular point. After walking a distance of 500 metres, he turns southward and walks a distance of 400 metres. At the end of this walk he is situated
(a) 300 metres north of the starting point
(b) 100 metres north-east of the starting point
(c) 300 metres east of the starting point
(d) 100 metres north of the starting point