Science Class 4th Notes
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Some Science Important MCQs
(i) The earth’s orbit round the sun takes.
(a) 165 days (b) 24 days (c) 365 days (d) 100 days
(ii) The largest planet is.
(a) Mars (b) Venus (c) Jupiter (d) Earth
(iii) A very cold planet which is far away from the sun is.
(a) Uranus (b) Saturn (c) Neptune (d) Pluto
(iv) In special tanks astronauts carry.
(a) Hydrogen (b) Nitrogen (c) Oxygen (d) Helium
(v) Tiny pieces of rock from outer space that do not burn up completely before falling to the ground are.
(a) Meteorites (b) Asteroids (c) Comets (d) Meteor
(i) The layer of air is called.
(a) Atmosphere (b) Ionosphere (c) Mesosphere (d) Hemisphere
(ii) The depth of atmosphere is more than. (a) 2000 Km (b) 500 Km (c) 1000 Km (d) 1 Km
(iii) Green plants give out a gas called.
(a) Hydrogen (b) Chlorine (c) Fluorine (d) Oxygen
(iv) Humans, Animals and plants cannot live without.
(a) Air (b) Shoes (c) Books (d) Chairs
(v) Changes in air pressure affect the.
(a) Buildings (b) Weather (c) Prices (d) Cars.
(i) Rivers flow in to.
(a) Sea (b) Mountains (c) Homes (d) Streams
(ii) The various types of clouds are.
(a) 2 (b) 3 (c) 4 (d) 10
(iii) Clouds from near the ground on cold clear night are called.
(a) Stratus (b) Cumulus (c) Nimbus (d) Mist or fog
(iv) A place where ground water flows of a hole in the ground is called.
(a) Spring (b) Well (c) Crystal (d) Ice
(v) The water on earth goes round and round is called.
(a) Carbon dioxide cycle (b) Nitrogen cycle (c) Water cycle (d) Cycle.
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