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Introduction to Chemistry

When X-rays a...

Question

When X-rays are passed through a solution of ferrous sulphate, it is converted into ferric sulphate. This principle is used for measuring radiation emitted by radioactive substances in an instrument called as:

A

Cloud chamber

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B

Dosimeter

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C

Geiger-Muller counter

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D

Oscilloscope

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Solution

The correct option is B Dosimeter
Ferrous Sulphate Dossimeter or Dosimeter or radiation dosimeter is a device that measures radiation emitted by radioactive substance.
It works on the principle that when X-rays are passed through solution of ferrous sulphate. It is converted into ferric sulphate.

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p e r m o l e

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K M n O_{4}

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Q. Ceric ammonium sulphate and potassium permanganate are used as oxidising agents in acidic medium for oxidation of ferrous ammonium sulphate to ferric sulphate. The ratio, of number of moles of ceric ammonium sulphate required per mole of ferrous ammonium sulphate to the number of moles of ferrous ammonium sulphate to the number of moles of

K M n O_{4}

required per mole of ferrous ammonium sulphate is:

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acts as an oxidising agent is acidic, basic medium.

Reason

K M n O_{4}

oxidises ferrous sulphate to ferric sulphate.

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(a) Which are other radiations emitted from such substances.
(b) What is the unit of nuclear radiation?

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