1316: The minute arm of a clock is 10 cm long. The number of minutes taken by the tip of the arm to travel a length of 10 cm is nearly equal to:
(a) 5
(b) 10
(c) 15
(d) 20
1317: In the structure of planet Earth, below the mantle, the core is mainly made up of which one of the following?
(a) Aluminium
(b) Silicon
(c) Iron
(d) Chromium
1318: Prohibition of discrimination on grounds of religion, etc. (Article 15 of the Constitution of India) is a Fundamental Right classifiable under
(a) the Right to Freedom of Religion
(b) the Right against Exploitation
(c) the Cultural and Educational Rights
(d) the Right to Equality
1319: 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
1320: Which of the following pairs is not correct?
(a) Seismograph : Earthquakes
(b) Anemometer : Speed of the wind
(c) Hygrometer : Water vapour content of the atmosphere
(d) Lactometer : Specific gravity of liquids