ICSE Class 10 Redox Reactions — Mock Test

Free online mock test for Redox Reactions (ICSE Class 10 Chemistry) — 85 competency-based questions with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.A displacement reaction in which an ion or atom in a compound is replaced by an ion or atom of another element is represented generally as:
   • A.X + YZ to XZ + Y
   • B.A + B to C
   • C.C to A + B
   • D.X + Y to XY
2. 2.Assertion (A): In the reaction 2Na(s) + Cl2(g) gives 2NaCl(s), sodium acts as the reducing agent. Reason (R): Sodium donates electrons to chlorine and thereby helps to reduce it.
   • A.Both A and R are true and R is the correct explanation of A
   • B.Both A and R are true but R is NOT the correct explanation of A
   • C.A is true but R is false
   • D.A is false but R is true
3. 3.A redox couple is defined as having together the oxidised and reduced forms of a substance taking part in a/an:
   • A.Oxidation or reduction half reaction
   • B.Acid-base neutralisation
   • C.Precipitation reaction
   • D.Combination reaction
4. 4.Using Stock notation, mercury(II) chloride and aurous chloride are correctly written respectively as:
   • A.Hg(II)Cl2 and Au(I)Cl
   • B.Hg(I)Cl2 and Au(III)Cl
   • C.Hg(II)Cl and Au(I)Cl3
   • D.Hg(I)Cl and Au(III)Cl3
5. 5.What is the oxidation number of phosphorus in NaH2PO4?
   • A.+5
   • B.+3
   • C.+4
   • D.-3