Non-Metals/Inorganic

Ammonia may be produced in the laboratory by heating a mixture of ammonium chloride and

• copper

• calcium hydroxide

• ammonium sulphate

• calcium chloride

Which of the following observations is likely when EXCESS aqueous ammonia is added to a solution of copper(II) sulfate and the mixture is shaken?

• Green solution

• Green precipitate

• Deep blue solution

• Light blue solution

Which of the following procedures can be used to identify ammonia gas?

• Passing the gas through lime water

• Placing a burning splint in a jar of the gas

• Placing a glowing splint in a jar of the gas

• Placing moist read and blue litmus paper in a jar of the gas

Which of the following statements about sulfur are true?

• It is used in the vulcanization of rubber

• It is used in the extraction of iron from iron ore

• It is used in the manufacture of explosives

Which of the following pairs of reagents will result in the formation of a yellow precipitate?

• Pb(NO₃)_{2 (aq)}/KI_(aq)

• FeSO_4(aq)/NaOH_(aq)

• CuSO_4(aq)/NH_3(aq)

• Fe₂(SO₄)₃/NH_3(aq)

Which of the following will produce a blue precipitate with sodium hydroxide?

• Iron(II) hydroxide

• Iron(III) hydroxide

• Copper(II) nitrate

• Aluminium nitrate

In which experiment would the amount of chlorine be GREATEST?

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Which of the following observations is expected when aqueous silver nitrate is added to aqueous potassium chloride?

• A pungent gas is evolved

• A blue precipitate appears

• A white precipitate appears

• A brown precipitate appears

A gas, Z, has physical and chemical properties similar to ammonia. The BEST method for collecting a pure, dry sample of Z would be to pass it through

• water and collect by downward delivery

• calcium oxide and collect by upward delivery

• calcium chloride and collect by downward delivery

• concentrated sulfuric acid and collect by upward delivery

Which of the following substances forms dense white fumes with ammonia gas?

• Oxygen

• Hydrogen

• Nitrogen dioxide

• Hydrogen chloride