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CHETANA PUBLICATION-MAS03-EXERCISE
- With the help of a neat labelled diagram, explain the laboratory prepa...
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- 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 one out: Submarines, icebergs, internal organ, sunken s...
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- Complete the analogy: Propene : double bond : : Propyne : …………. .
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- State True or False. Correct the false statement: A convex mirror is ...
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- What is dye?
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- Match the columns:
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- Bats can navigate in 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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