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Which of the following oxides is formed when potassium metal in burnt in excess of air?

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Important Questions on The s-Block Elements

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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 23
On a commercial scale, sodium hydroxide is prepared by:
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 24
Which of the following gives sodium hydroxide along with hydrogen gas in reaction with water?
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 25
Which of the following can exist in an aqueous solution?
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 26
Which of the following liberates H2 with cold water?
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 27
When ionic nitrides react with water, the products are:
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 29
Select the correct statement.
 
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 30

NaNO3 is not used as a gunpowder because it is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 31
Baking powder used to make cake is a mixture of starch, NaHCO3 and CaH2PO42. The function of CaH2PO42 is: