ICSE Class 10 Hydrogen Chloride (HCl) — Mock Test (2027)

Free online mock test for Hydrogen Chloride (HCl) (ICSE Class 10 Chemistry) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.Which two compounds of Lead combine with concentrated hydrochloric acid to liberate chlorine gas?
   • A.Lead monoxide and Lead sulphate
   • B.Lead dioxide and Red lead (Pb₂O₄)
   • C.Lead nitrate and Lead carbonate
   • D.Lead acetate and Lead chloride
2. 2.Which of the following substances is NOT suitable for drying hydrogen chloride gas because it reacts chemically with the gas?
   • A.Concentrated sulphuric acid
   • B.Phosphorus pentoxide
   • C.Anhydrous calcium chloride
   • D.Silica gel
3. 3.(v) Two black coloured oxidizing agents which react with concentrated hydrochloric acid to obtain chlorine are
   • A.$\mathrm{PbO}_{2}$ and $\mathrm{MnO}_{2}$
   • B.$\mathrm{PbO}_{2}$ and $\mathrm{CuO}$
   • C.$\mathrm{MnO}_{2}$ and $\mathrm{CuO}$
   • D.$\mathrm{MnO}_{2}$ and $\mathrm{K}_{2}\mathrm{Cr}_{2}\mathrm{O}_{7}$
4. 4.Why are thick white fumes formed when a glass rod dipped in NH₄OH is brought near the mouth of a bottle full of HCl gas?
   • A.HCl gas reacts with ammonia from NH₄OH to form ammonium chloride, which appears as thick white fumes.
   • B.HCl gas combines with water vapor in the air to produce white fumes of hydrochloric acid.
   • C.The reaction between HCl and NH₄OH releases chlorine gas, which forms white fumes.
   • D.NH₄OH decomposes into ammonia and water, and the ammonia reacts with oxygen to form white fumes.
5. 5.Match the following: **Column-I** (i) Hydrogen sulphide (ii) Carbon dioxide (iii) Sulphur dioxide (iv) Hydrogen **Column-II** (a) Colourless gas burns with pop sound. (b) Rotten egg smell (c) Colourless, odourless gas (d) Burning sulphur smell