Ammonium

Sal Ammoniac is

• Ammonium sulphate

• Ammonium chloride

• Ammonium nitrate

• Ammonium carbonate

What is method of collection of ammonia?

• Downward displacement of air

• Upward displacement of air

• Downward displacement of water

• Upward displacement of water

Which of the following statement about ammonia preparation from ammonium chloride is false?

• Round bottomed flask is kept in inclined position.

• Ammonium chloride is taken in higher ratio by weight.

• It liberates a pungent smelling gas.

• Calcium hydroxide is the preferred alkali used.

Complete Mg3N2 +A -->B+NH3

• A- Warm water, B-MgO

• A-Warm water,B-Mg(OH)2

• A-Water,B-MgO2

• A-Water,B-Mg(OH)2

Which of the following statement about ammonia preparation is false.

• Ammonium nitrate cannot be used as reactant.

• Preparation from nitrides are seldom used.

• Fused Calcium chloride is used as drying agent.

• Ammonia gas formed is lighter than air .

Ammonia is used for:

a) cleaning agent

b) fertiliser

c) explosive production

d) soap production

• a and b

• b, c and d

• a, b and c

• c and d

Nitrogen for the Haber process is formed by

• Fractional distillation of air

• Fractional distillation of crude oil

• Fixation of nitrogen by pea plants

• Electrolysis of water

Nitrogen + hydrogen −> ammonia is exothermic . What will happen if we increase the temperature

• The reaction will slow down

• There will be no change in ammonia production

• Ammonia will decompose

• More ammonia will be produced

Tags

NGSS.HS-PS1-5

Why high pressures for the Haber process used in industry?

• Favours the formation of ammonia

• Avoid poisoning of catalyst

• To reverse the reaction

• to make reaction go slow

Tags

NGSS.HS-PS1-6

What are the complete conditions required for the Haber process?

• 200 - 900atm and 450°C, finely divided iron, molybdenum

• 650 atm and 200°C, Molybdenum, finely divided iron

• 2 atm and 450^oC, finely divided iron, Molybdenum

• 4 atm and 250^oC, finely divided iron, Molybdenum