1) Objects, like the sun, which emit light of their own, are called a) luminous objects b) non - luminous objects c) absorbers of light d) reflectors of light 2) An object, through which we can see partially, but not very clearly, is a) a sheet of tracing paper b) a rubber ball c) a sheet of plane glass d) a compact disk 3) The ‘something’, which can change its shape and size, and may appear and disappear anywhere/anytime, is known as a- a) shadow b) image c) beam of light d) reflector of light 4) When sun (during early morning) is behind an object, the size of its shadow in comparison to that of the object would be a) larger b) smaller c) equal d) almost zero 5) The image, formed by a pinhole camera, is a) inverted and diminished b) erect and diminished c) inverted and enlarged d) erect and enlarged 6) The roots, that are consumed as food are - a) onion and sweet potato b) carrot and onion c) beet and turnip d) potato and raddish 7) The plants manufacture food through the process of a) transpiration b) water conduction c) photosynthesis d) respiration 8) Leaves are attached to the stem at the a) nodes b) pedicel c) internode d) stalk 9) The total number of whorls, in a flower, is/are a) one b) Two c) three d) four 10) The reproductive organ, of a plant, is the a) flower b) leaf c) seed d) root 11) The part of the flower, that provides protection to the bud, before it blooms, is the a) sepal b) petals c) stamen d) pistil 12) Which of the statements is true for plants? a) Non-green plants are autotrophic b) Green plants are autotrophic c) All plants are heterotrophic d) All green plants are saprophytes 13) Which of the following plants belings to the category of shrubs? a) mango b) rose c) neem d) tilsi 14) Which one among these is not a flowering plant? a) grasses b) algae c) rose d) mango 15) Biennial plants are those plants which live for a) many years b) three years c) two years d) one year 16) All living organisms have a) bones b) feathers c) cells d) stems 17) Which of these is an invertebrate? a) snail b) sparrow c) cobra d) frog 18) The standard unit of lenght is the a) metre b) kilometre c) millimetre d) centimetre 19) The standard unit of time is the a) second b) year c) day d) minute 20) The motion, of the tip of a pen, while writing, is a/an a) rectilinear motion b) oscillatory motion c) curvilinear motion d) rotatory motion 21) Which of the following four 'motions' is different from the other three? a) the moving blades of a fan b) a spinning top c) a potter's wheel d) a fruit falling from a tree 22) The motion of a swinging pendulum is a/an a) curvilinear motion b) oscillatory motion c) rotatory motion d) rectilinear motion 23) Which of the following is an example of a heterogeneous mixture? a) sugar in water b) pebbles in rice c) an aerated drink d) salt in water 24) Which one of the following is not an example of a pure substance? a) oxygen b) air c) copper d) carbon dioxide 25) The process of loading helps to a) slow down the rate of sedimentation b) speed up the rate of sedimentation c) speed up the rate of decantation d) slow down the rate of decantation 26) TRansfering the clear liquid into another container leaving behind the residue is called a) sedimentation b) decantation c) condensation d) crystallisation 27) A substance that sublimes easily, is a) naphthalene b) salt c) sugar d) chalk

DAV class 6 Science Chapter-12, 8, 7, 6, 4

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