1726: The Security council of UN consists of 5 permanent members, and the remaining 10 members are elected by the General Assembly for a term of
(a) 1 year
(b) 2 years
(c) 4 years
(d) 5 years
1727: If water contracts on freezing, which of the following would happen?
(a) Icebergs will completely float on the surface of water
(b) Ice would become more dense
(c) Lakes would freeze from top to bottom
(d) Rocks will crack due to freezing or internal water
1728: The resolving power of an electron microscope is much higher than that of an ordinary light microscope because resolving power increases:
(a) If wavelength is short and wavelength of electron beam can be made quite small by accelerating the electrons.
(b) If wavelength is short and light given by electrons has very short wavelength.
(c) If magnification is high and electronic lens provides much higher magnification.
(d) If magnification is high and the electron microscope has a battery of lenses to provide high magnification.
1729: Assertion (A)
Most of the hot deserts are present on the western margin of the continents close to the zones of trade winds.
Reason (R)
Zones of trade winds are characterised by seas having reversal of planetary wind direction.
(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 the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
1730: Which one of the following ancient Indian records is the earliest royal order to preserve food grains to be utilised during the crises in the country ?
(a) Sohagaura Copper-plate
(b) Rummindei pillar-edict of Asoka
(c) Prayaga-Prasasti
(d) Mehrauli Pillar inscription of Chandra