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Which of the following oxide(s) gives brown ppt on reaction with conc. HNO3 :

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Important Questions on The p-Block Elements

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 49
Which of the following reaction produces PH3 :
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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 50
The metal that cannot be produced on reduction of its oxide by aluminium is -
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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 51
Which of the following are ionic carbides?
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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 53
BCl3 does not exist as dimer but BH3 exists as dimer B2H6 because:
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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 54
Amorphous boron on burning in air forms:
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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 55
Borax is used as a cleansing agent because on dissolving in water, it gives:
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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 56
One mole of calcium phosphide on reaction with excess water gives
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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 58
Select correct statement about B2H6-