8/16/25, 10:03 AM Exam Automation
QUIDEI INDIVIDUAL TUITION CLASS
Calicut Airport Road Mc Mall Edavannappara,Malappuram Dt ,Kerala,India. Copyrigh
Test / Exam Name: Chemical Reactions And Standard: 10th Subjec
Equations
Student Name: Section: Roll No
Questions: 1
A
Q1. MnO2 + x HCI → MnCl2 + y H2O + z Cl2
In order to balance the above chemical equation, the values of x, y and z respectively are:
A 6, 2, 2 B 4, 1, 2 C 4, 2, 1 D
Q2. MnO, + 4HCl → MnCl, + 2H2O + Cl2
The reaction given above is a redox reaction because in this case:
A MnO2 is oxidised and HCl is reduced. B HCl is oxidised.
C MnO2 is reduced. D MnO2 is reduced and HCl is oxid
Q3. Select from the following a decomposition reaction in which source of energy for decomposition is l
(A) 2FeSO4 -> Fe2O3 + SO2 + SO3
(B) 2H₂O → 2H₂+ O₂
(C) 2AgBr → 2Ag + Br₂
(D) CaCO3 → CaO+ CO2
Q4. In a double displacement reaction such as the reaction between sodium sulphate solution and barium
1. Exchange of atoms takes place.
2. Exchange of ions takes place.
3. A precipitate is produced.
4. An insoluble salt is produced.
The correct option is:
A (B) and (D). B (A) and (C). C Only (B). D
Q5. Calcium oxide reacts vigorously with water to produce slaked lime.
CaO(s) + H2O(l) → Ca(OH)2(aq).
This reaction can be classified as:
1. Combination reaction.
2. Exothermic reaction.
3. Endothermic reaction.
4. Oxidation reaction.
Which of the following is a correct option?
A (A) and (C). B (C) and (D). C (A), (C) and (D). D
B
QUIDEI INDIVIDUAL TUITION CLASS
Calicut Airport Road Mc Mall Edavannappara,Malappuram Dt ,Kerala,India. Copyrigh
Test / Exam Name: Chemical Reactions And Standard: 10th Subjec
Equations
Student Name: Section: Roll No
Questions: 1
A
Q1. MnO2 + x HCI → MnCl2 + y H2O + z Cl2
In order to balance the above chemical equation, the values of x, y and z respectively are:
A 6, 2, 2 B 4, 1, 2 C 4, 2, 1 D
Q2. MnO, + 4HCl → MnCl, + 2H2O + Cl2
The reaction given above is a redox reaction because in this case:
A MnO2 is oxidised and HCl is reduced. B HCl is oxidised.
C MnO2 is reduced. D MnO2 is reduced and HCl is oxid
Q3. Select from the following a decomposition reaction in which source of energy for decomposition is l
(A) 2FeSO4 -> Fe2O3 + SO2 + SO3
(B) 2H₂O → 2H₂+ O₂
(C) 2AgBr → 2Ag + Br₂
(D) CaCO3 → CaO+ CO2
Q4. In a double displacement reaction such as the reaction between sodium sulphate solution and barium
1. Exchange of atoms takes place.
2. Exchange of ions takes place.
3. A precipitate is produced.
4. An insoluble salt is produced.
The correct option is:
A (B) and (D). B (A) and (C). C Only (B). D
Q5. Calcium oxide reacts vigorously with water to produce slaked lime.
CaO(s) + H2O(l) → Ca(OH)2(aq).
This reaction can be classified as:
1. Combination reaction.
2. Exothermic reaction.
3. Endothermic reaction.
4. Oxidation reaction.
Which of the following is a correct option?
A (A) and (C). B (C) and (D). C (A), (C) and (D). D
B
