The p-Block Elements questions
1863 published questions with worked solutions.
- Dilute HNO_3 reacts with limestone to yield:
- The structure of white phosphorus is:
- Phosphine is NOT evolved when:
- Hydrolysis of PI_3 yields:
- Nitrogen forms ...... oxides.
- The nitrate which, when heated, gives off a gas (or mixture of gases) that cannot relight a glowing splinter is:
- Phosphine is generally prepared in the laboratory by:
- Ammonia is:
- The colourless gas liberated by passing excess ammonia through chlorine is:
- An important method of fixation of atmospheric N_2 is:
- Which reagent can separate nitric oxide from nitrous oxide?
- The smell of nitrogen dioxide is:
- When phosphine gas is passed into a solution of silver nitrate, a black precipitate is formed, together with the evolution of
- HNO_3 is manufactured by:
- The oxidation states of phosphorus vary from:
- I_2 on rubbing with liquid (concentrated aqueous) NH_3 forms, with explosion:
- N_2O is formed on reaction of dil. HNO_3 with:
- In the nitrogen family, the H–M–H bond angle in the hydrides gradually becomes closer to 90° on going from N to Sb. This shows...
- The correct general structure of hypophosphorous acid is:
- On heating ammonium dichromate, the gas evolved is:
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