364. The richest source of Vitamin A is
(a) Egg yolks
(b) Apple
(C) Orange
(d) Banana
365. The length of a conductor is halved. Its conductance will be
(a) Halved
(b) Unchanged
(c) Doubled
(d) Quadrupled
366. The length of shadow at noon would be the same all the year round at
(a) The equator
(b) The south pole
(c) The tropic of cancer
(d) The north pole
368. Which of the following characteristics is not shown by the hydrogen gas ?
(a) It bums in air to form water
(b) It combines with almost all the metals forming hydrides
(c) It supports combustion
(d) It readily combines with fluorine and chlorine and less readily with bromine, iodine, sulphur and phosphorus.
369. Which of the following is a naturally occurring material that is directly used as a fertiliser ?
(a) Zn3 (PO4)2
(b) KNO3
(c) CaSO4
(d) NaCl
370.Of the various forms of carbon, the one which is used for the adsorption purpose is
(a) Diamond
(b) Wood charcoal
(c) Graphite
(d) Coke
371.Wood is the main raw material for the manufacture of
(a) Gun powder
(b) Paint
(c) Paper
(d) Ink
372.An atom of an element with a mass number of 23 and the atomic number of 11 will have
(a) 11 neutrons, 11 protons and 12 electrons
(b) 23 protons and 11 electrons
(c) 11 neutrons, 11 protons and 12 electrons
(d) 11 protons, 12 neutrons and 11 electrons
373. Vitamin A is necessary in our body for
(a) Good digestion
(b) Proper vision
(c) Haemoglobin synthesis
(d) Processing of blood clotting