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CHETANA PUBLICATION-MAS03-EXERCISE
- The image made by a plane mirror is a ………….image.
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- Molecular mass of methane is ………… .
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- Sound waves with frequency greater than 20 kHz are called …………. .
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- The ……….% aqueous solution of salt is called brine.
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- If the reflected rays do not actually meet, such an image is called as...
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- Find the odd man out: Submarines, icebergs, internal organ, sunken shi...
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- Complete the analogy: Propene : double bond : : Propyne : …………. .
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- State whether the following statements are true or false. Correct the ...
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- What is dye?
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- Give reasons, (any 2) Bats can navigate in the dark.
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- Give reasons, (any 2) Methane is used as a domestics fuel.
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- Give scientific reasons: Bleaching powder has the odour of chlorine.
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- Give the uses of coal?
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- If you hear the thunder 20 seconds after you see the flash of lightnin...
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- An object 10 cm in height is placed at a distance of 36 cm from a conc...
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- The speed of sound in air at 0^@C is 332 m//s. If it increases at the ...
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- Give structural formula and electron dot model of methane.
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- What is an echo? What factors are important to get a distinct echo?
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- Write a short note on biogas plant. (3) Give the properties and uses o...
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- Explain the sign conventions for reflection by spherical mirrors
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