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Physical state and colour of interhalogen compounds at room temperature

This type of question, asked 3 times: May 2021 S1, 4 May 2023 S2, 16 May 2023 S1. All 3 questions below, oldest first.

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  1. Question 1

    May 2021 S1

    77
    Which among the following compounds is NOT a colourless gas?

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  2. Question 2

    4 May 2023 S2

    55
    Which from following compounds is NOT in solid state at 25°C?

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  3. Question 3

    16 May 2023 S1

    57
    Which from following compounds is NOT in gaseous phase at 25°C25°C?

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