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What is an echo? What factors are import...

What is an echo? What factors are important to get a distinct echo?

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CHETANA PUBLICATION-MAS03-EXERCISE
  1. The speed of sound in air at 0^@C is 332 m//s. If it increases at the ...

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  2. Give structural formula and electron dot model of methane.

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  3. What is an echo? What factors are important to get a distinct echo?

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  4. Write a short note on biogas plant. (3) Give the properties and uses o...

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  5. Explain the sign conventions for reflection by spherical mirrors

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  6. Hydrogen gas is filled in two identical bottles, A and B, at the same ...

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  7. Explain the following SCImical reactions with the help of a balanced e...

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  8. Explain the following SCImical reactions with the help of a balanced e...

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  9. Write the properties and uses of Teflon.

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  10. Draw ray diagram for object at infinity for a concave mirror.

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  11. Write in short note on SONAR?

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

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

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  14. Molecular mass of methane is………….. .

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

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

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

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

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

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

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