Which of the following acts as ionising gas in Geiger Muller counter?(a) Alcohol(b) Argon gas(c) Krypton(d) Hydrogen

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1.	Which of the following acts as ionising gas in Geiger Muller counter?(a) Alcohol(b) Argon gas(c) Krypton(d) Hydrogen
Answer» The correct answer is (b) Argon gas To explain I would say: Argon gas acts as ionising gas in Geiger Muller counter. It is present in a gas type envelope along with the electrodes.

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