p-Block Elements - 04 (Nitrogen Family)

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Q1. The bonds Present in N2O5 *

1 point

Covalent only

Ionic

Covalent and Coordinate

Coordinate only

Q2. Which of the following oxides of nitrogen is a coloured gas? *

1 point

NO2

N2O

N2O5

Q3. Which of the following shows nitrogen with its increasing order of oxidation number? *

1 point

Q4. In which one of the following oxides of nitrogen, onenitrogen atom is not directly linked to oxygen? *

1 point

N2O3

N2O

N2O4

Q5. The catalyst used in the manufacture of HNO3 by Ostwald’s process is *

1 point

platinum gauze

platinum black

finely divided nickel

vanadium pentoxide

Q6. Concentrated nitric acid, upon long standing, turns yellow brown due to the formation of *

1 point

N2O

NO2

N2O4

Q7. Which of the following is the strongest reducing agent ? *

1 point

NH3

BiH3

SbH3

PH3

Q8. Which one of the following is not an use of ammonia ? *

1 point

As a refrigerate

In manufacture of nitric acid

To produce various nitrogenous fertilizers.

In the pickling of stainless steel

Q9. Which of the following is incorrect for white and redphosphorus ? *

1 point

They can be converted into one another

They can be oxidised by heating in air

They are both soluble in CS2

They consist of the same kind of atoms

Q10. Which of the following phosphorus is most reactive ? *

1 point

White phosphorus

Red phosphorus

Violet phosphorus

Scarlet phosphorus

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