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WorksheetsTopic 6 Nitrogen and Its Compounds
Total questions: 10
Worksheet time: 45secs
Ammonia is a Lewis base because
it can turn litmus paper to blue
it reacts with acid to produce salt and water
it has lone donor pair electrons
it can produce OH- ions in water
Which of the following statements is not correct based on the reaction equation below?
3H2(g) + 2N2(g) --> 2NH3(g)
It is an exothermic reaction
The yield of ammonia will increase with an increase in temperature
Finely divided iron is used as catalyst
This process is used to manufacture ammonia in big scale
Nitrogen is inert because
it has one lone pair electrons
it is in the gas state
it has high enthalpy of atomization
it is a non polar molecule
Which of the following is not true regarding ammonia?
It has a pyramidal shape.
Ammonia is a lewis base.
It dissolved in water to form ammonium solution.
Aqueous ammonia will reduce copper(II) to copper.
Nitrates are poisonous to human if consumed because
It oxidize the iron(II) in haemoglobin to iron (III)
it react with water in the body to form nitric acid.
It decomposes the poisonous nitrogen dioxide
It is oxidized to uric acid in the body
Which of the following is not correct regarding nitrogen monoxide, NO?
It acts as a free radical
It is highly reactive
It is a colourless gas
It is a V-shape molecule
The following are correct about Ostwald process except for
Temperature of 850 oC is used for the first stage of the process
Using finely divided iron as catalyst
The temperature need to be lowered for the second stage
Excess oxygen for the overall process
Which of the following is a correct observation for the reaction of Mg2+ with ammonia solution?
Forms blue precipitate
Soluble in excess ammonia
Turn to light brown on standing
Forms white precipitate
Which of the following is incorrect about Stage 3 of Ostwald process?
Nitric acid that formed is in aqueous state
In the presence of oxygen and water, NO gas that formed will be recycle
In the absence of oxygen, nitric acid that formed will be concentrated by distillation
It occurs in absorption tower
Choose incorrect statement about nitrogen oxides?
N2O4 is a colourless liquid at temperature below 21 oC.
NO2 is a brown gas that will decompose above 140 oC.
NO is a toxic, colourless gas which is a primary air pollutant.
Colourless gas of N2O4 is a acidic gas.
