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The angular shape of ozone molecules (O3) consists of

2 sigma and 1 pi bonds
1 sigma and 2 pi bonds
2 sigma and 2 pi bonds
1 sigma and 2 pi bonds
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The function of Fe(OH)3 in the contact process is

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The inert gas abundantly found in atmosphere is

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Helium is used in balloons in place of hydrogen because it is

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When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

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Which one of the following orders correctly represents the increasing acid strengths of the given acids?

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Which one of the following is an amphoteric oxide?

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Which is most easily liquefiable rare gas?

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The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorous acid is

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Which of the following reactions of xenon compounds is not feasible?

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