Page 234 - Chemistry ICSE Class X

220 ICSE Chemistry – 10

Questions from Board Papers

Q 1. The diagram shows an apparatus for the laboratory preparation of hydrogen chloride. [ICSE 2010]

A

Hydrogen
chloride gas

B
(i) Identify A and B.
(ii) Write chemical equation for the reaction.
KKK *QY YQWNF [QW EJGEM YJGVJGT QT PQV VJG ICU LCT KU ſNNGF YKVJ J[FTQIGP EJNQTKFG!
(iv) What does the method of collection tell you about the density of hydrogen chloride?
Q 2. Give reasons as to why hydrogen chloride can be termed as a polar covalent compound. [ICSE 2011]
Q 3. Choose the correct answer from the options given below: [ICSE 2011]
Hydrogen chloride gas being highly soluble in water is dried by:
(A) Anhydrous calcium chloride (B) Phosphorus pentoxide
(C) Quicklime (D) Concentrated sulphuric acid
Q 4. In the laboratory preparation of hydrochloric acid, HCl gas is dissolved in water. [ICSE 2011]
(i) Draw a diagram to show the arrangement used for the absorption of HCl in water.
(ii) Why is such an arrangement necessary? Give two reasons.
(iii) Write the chemical equations for the laboratory preparation of HCl gas when the reactants are:
(A) below 200°C (B) above 200°C.
Q 5. Give reason why hydrogen chloride gas cannot be dried over quick lime. [ICSE 2012]
Q 6. Give balanced equation for the reaction between concentrated hydrochloric acid and potassium permanganate
solution. [ICSE 2012]
Q 7. Identify the gas evolved when potassium sulphite is treated with dilute hydrochloric acid. [ICSE 2013]
Q 8. State one appropriate observation of the following: [ICSE 2013]
(i) Copper sulphide is treated with dilute hydrochloric acid.
(ii) A few drops of dilute hydrochloric acid are added to silver nitrate solution, followed by addition of
ammonium hydroxide solution.
Q 9. Identify the gas which does not conduct electricity in the liquid state but conducts electricity when dissolved in
water. [ICSE 2013]
Q 10. Write balanced equation for action of dilute hydrochloric acid on sodium sulphide. [ICSE 2014]
Q 11. 5VWF[ VJG ſIWTG IKXGP DGNQY CPF CPUYGT VJG SWGUVKQPU VJCV HQNNQY [ICSE 2014]