1826: A spherical body moves with a uniform angular velocity around a circular path of radius r. Which one of the following statements is correct?
(a) The body has no acceleration
(b) The body has a radial acceleration 2r directed towards the centre of the path.
(c) The body has a radial acceleration 2/5 2r directed away from the centre of the path.
(d) The body has an acceleration 2r tangential to its path
1827: Which one of the following winds is not a planetary wind?
(a) Trade
(b) Westerly
(c) Polar Easterly
(d) Monsoon
1828: The tendency of a liquid drop to contract and occupy minimum area is due to
(a) viscosity
(b) surface tension
(c) density
(d) vapour pressure
1829: Civil Disobedience Movement was started in India in 1930 for:
(a) Home rule
(b) Purna Swaraj
(c) Non-cooperation with British government
(d) Hindu-Muslim unity
1830: Physico-chemical characteristics of water in water sources undergo changes due to
(a) aquatic macrophytes
(b) aquatic fungi
(c) effluents
(d) evapotranspiration