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2251.The process of vaporizing a solid substance and condensing the vapours to form the solid directly is known as?
2252.Which is not the property of gases? Gases have definite volume, Gases have indefinite shape, Gases have indefinite volume, Gases can be compressed
2253.Which one of the following is a non-luminous object(s)? Sun, Stars, Moon, Fireflies
2254.An object which allows some light to travel through it or allows light to pass through partially is called _____?
2255.If an Opaque object is moved closer to the light source the shadow gets _______?
2256.When the moon comes in front of the sun and blocks most the sun’s light from reaching the earth is known as _____?
2257.Force per unit area is called _____?
2258.Transportation of water takes place through continuous tubes in roots, stem and leaves are called as?
2259.Scalar quantities have ______ and suitable unit.