686: The Prime Minister of India, at the time of his/her appointment
(a) need not necessarily be a member of one of the Houses of the Parliament but must become a member of one of the" Houses within six months
(b) need not necessarily be a member of one of the Houses of the Parliament but must become a member of the Lok Sabha within six months
(c) must be a member of one of the Houses of the Parliament
(d) must be a member of the Lok Sabha
687: 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
688: In the given figure, the site of the Tehri dam has been labelled as
(a) A
(b) B
(c) C
(d) D
689: Some medicines are given in the form of capsules. The capsules are made of
(a) Paper
(b) Gelatinous material
(c) Embryonic tissue
(d) Starch
690: Consider the following features of newer models of motor cars :
I. Radial tyres
II. Streamlined body
III. Multipoint fuel injection
IV. Catalytic converter with exhaust
Which of these features make the newer models of motor cars more fuel efficient ?
(a) I and II
(b) II and III
(c) II, III and IV
(d) I, III and IV