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When metals A and B are heated in air, A...

When metals A and B are heated in air, A only forms oxide but B forms both oxide and nitride. A and B are

A

Cs,K

B

Mg, Ca

C

Li, Na

D

K, Mg

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The correct Answer is:
D
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CHHAYA PUBLICATION-s-BLOCK ELEMENTS -MCQ HOTSPOT (SINGLE CORRECT TYPE)
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  2. When a compound A is heated, it produces a colourless gas and the resi...

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  3. When metals A and B are heated in air, A only forms oxide but B forms ...

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  4. The alkali metal which emits a light of longest wavelength in the flam...

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  5. The compound which does not form a double salt is-

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  6. The decreasing order of stability of the chloride salts of alkali meta...

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  7. The affinity of sodium for water is used for drying

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  8. The ions present in an anhydrous mixture of potassium fluoride and hyd...

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  13. The compound which on thermal decomposition produces a basic and an ac...

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  15. Which of the following carbonates is soluble in water -

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  16. The compound whose aqueous solution is called 'baryta water' is-

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  17. The alkali metal which emits a light of shortest wave-length in the fl...

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