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With the help of a neat labelled diagram...

With the help of a neat labelled diagram, explain the laboratory preparation of carbon-dioxide.

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CHETANA PUBLICATION-MAS03-EXERCISE
  1. Draw ray diagram for object at infinity for a concave mirror.

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  2. Write in short note on SONAR?

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  3. With the help of a neat labelled diagram, explain the laboratory prepa...

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  4. The image made by a plane mirror is a ………….image.

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  5. Molecular mass of methane is………….. .

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  6. Sound waves with frequency greater than 20 kHz are called……….. .

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  7. The ……….% aqueous solution of salt is called brine.

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  8. If the reflected rays do not actually meet, such an image is called as...

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  9. Find the odd one out: Submarines, icebergs, internal organ, sunken s...

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  10. Complete the analogy: Propene : double bond : : Propyne : …………. .

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  11. State True or False. Correct the false statement: A convex mirror is ...

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  12. What is dye?

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  13. Match the columns:

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  14. Bats can navigate in dark.

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  15. Give reasons, (any 2) Methane is used as a domestics fuel.

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  16. Give scientific reasons: Bleaching powder has the odour of chlorine.

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  17. Give the uses of Coal.

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  18. If you hear the thunder 20 seconds after you see the flash of lightnin...

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  19. An object 10 cm in height is placed at a distance of 36 cm from a conc...

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  20. The speed of sound in air at 0^@C is 332 m//s. If it increases at the ...

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