1666: Consider the following statements:
1. Toothless mammals such as pangolins are not found in India.
2. Gibbon is the only ape found in India.
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
1667: The escape velocity from the earth's surface is about:
(a) 30 km/sec
(b) 6 km/sec
(c) 11.2 km/sec
(d) 300 km/sec
1668: Hydroponics means:
(a) Cultivation of plants without the use of soil
(b) Detection of sound in water
(c) Animals living in water
(d) A Japanese way of flowering
1669: In an examination, every candidate took Physics or Mathematics or both. 65.8% took Physics and 59.2% took Mathematics. The total number of candidates was 2000. How many candidates took both Physics and Mathematics ?
(a) 750
(b) 500
(c) 250
(d) 125
1670: Consider the following statements :
1. Caffeine, a constituent of tea and coffee is a diuretic.
2. Citric acid is used in soft drinks.
3. Ascorbic acid is essential for the formation of bones and teeth.
4. Citric acid is a good substitution for ascorbic acid in our nutrition.
Which of the statements given above are correct ?
(a) 1 and 2, only
(b) 1, 2 and 3, only
(c) 3 and 4 only
(d) 1, 2, 3 and 4