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MCQs: The temperature variation in the stratosphere is about
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MCQs: The layer which protects the earth from being hit by meteoroids is
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MCQs: Percentage of argon in the air is
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MCQs: The compound which is responsible for acid rain is
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MCQs: Metal that difficult to oxidize are called
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MCQs: On contact with oxygen, Rubidium forms
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MCQs: The most metallic among the following is
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MCQs: As we move across the period the electronegativity
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MCQs: As we move across the period from left to right, the reactivity of metals with oxygen
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MCQs: The sodium metal is soft due to
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MCQs: Elements which have properties of metals and non-metals are
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MCQs: As the size of the atom increases down the group, the electro positivity
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MCQs: Bromine is a non-metal in
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MCQs: As compare to beryllium, the magnesium is
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MCQs: The oxide of aluminum is
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MCQs: Halogens react with metals to form
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MCQs: The most acidic among the following is
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MCQs: The tendency of a metal to lose electron is called
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MCQs: Non-metals are poor conductors of
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MCQs: Metallic oxides are
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