01 What does a hygrometer measure?

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02 Galvanometer is used for measuring-

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03 Ammeter is —

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04 ________ is type of Echolocation.

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05 A lie detector apparatus is also known as a:

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06 Which of the following is used to detect current in a circuit?

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07 What does stalagmometer used to measure?

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08 Which instrument is used for measuring density of milk?

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09 Which of the following is a lie detector machine?

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10 Which is used for measuring speed of motor-

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