HCl Grade 10 icse AVM

Which of the following are suitable conditions for preparation of hydrogen chloride gas?

• Heating NaCl and sulphuric acid at 200 degree celsius.

• Heating NaCl and conc.sulphuric acid at any temperature.

• Heating NaCl and conc.sulphuric acid at temperature above 200 degree celsius.

• Heating NaCl and conc. sulphuric acid at temperature below 200 degree celsius

1. Name the drying agents not used to dry hydrogen chloride gas

• phosphorus pentaoxide

• phosphorus pentaoxide and calcium oxide

• calcium oxide

• conc.sulphuric acid

3. HCl being polar covalent compound is soluble in organic non – polar solvents also.

• True

• False

4. What is the main purpose of Fountain experiment?

• To show high solubility of HCl gas in water.

• To show the acidic nature of HCl gas.

5. Liquefied hydrogen chloride does not conduct electricity. It shows the

• Electrovalent nature of hydrogen chloride.

• Covalent nature of hydrogen chloride.

• No Nature

6. Why is inverted funnel arrangement is used to prepare hydrochloric acid?

• to prevent back suction and provide large surface area for absorption of HCl gas.

  HIDE ANSWER

• to provide large surface area for absorption of HCl gas..

• to increase back suction.

• to prevent back suction.

Name the gas released when sodium sulphite reacts with hydrochloric acid.

• chlorine

• sulphur diioxide

• sulphur trioxide

• hydrogen

Which of the following compound gives white ppt. when reacts with hydrochloric acid?

• lead nitrate

• copper nitrate

• calcium carbonate

• sodium sulphide

When silver nitrate solution reacts with hydrochloric acid, it gives a thick curdy white ppt. which is soluble in

• sodium hydroxide

• ammonium hydroxide

• calcium hydroxide

What do you conclude from the given diagram?

• Air is heavier than HCl gas

• Air is lighter than HCl gas