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Q 1. NaCl + AgNO3 → AgCl + NaNO3  is an example of
Combustion reaction
Decomposition reaction
Combination reaction
Double displacement reaction
Q 2. Which substance gets oxidised in the following reaction? 4Na + O2 →2Na2O
Na
Na2O
O2
All of these
Q 3. Which metallic spoon can be used to stir lead nitrate solution?
Sodium
Iron
Silver
Aluminium
Q 4. The reaction between lead nitrate and potassium iodide is an example of
combination reaction
double displacement reaction
decomposition reaction
combustion reaction
Q 5. Rancidity can be prevented by
Adding antioxidants
Refrigeration
Storing the food in air-tight containers
All of these
Q 6. Which of the following reaction requires light?
Electrolytic decomposition reactions
Thermolytic decomposition reactions
Photolytic decomposition reactions
Combination reactions
Q 7. Which one is not observed when aluminium is added to solution of copper sulphate?
The solution is blue in the beginning.
The final solution becomes colourless.
The final solution becomes light green.
A brown mass is deposited on the surface of Aluminium.
Q 8. Which of the following statement is correct?
A less active metal can displace a more active element from its solution.
A more active metal can displace a less active element from its salt solution.
No precipitate is formed in a double displacement reaction.
No metal can displace hydrogen from acids.
Q 9. The oxidising agent for the following reaction is _______ . CH4 + 2O2 → CO2 + 2H2O 
methane
carbon dioxide
water
oxygen
Q 10. Combination reactions can take place between
Two elements
An element and a compound
Two compounds
All of these
Q 11. Which of the following metals comes above zinc in reactivity series?
Copper
Iron
Silver
Aluminium
Q 12. Which of the following is an example of double displacement reaction?
4 Na + O2 → 2 Na2O
Mg + 2 HCl  → MgCl2 + H2
Na2SO4+ BaCl2  → 2 NaCl + BaSO4
N2 + 3 H2  →  2 NH3
Q 13. An example of a chemical reaction in which heat is evolved is
Reaction between lead nitrate and potassium iodide
Boiling of water
Reaction between sodium and water
Reaction between ammonium chloride and barium hydroxide
Q 14. Setting of cement is an example of
Exothermic reaction
Endothermic reaction
Physical change
Precipitation reaction
Q 15. Which of the following metal comes below copper in reactivity series?
Zinc
Iron
Silver
Aluminium
Q 16. The number of reactants in a decomposition reaction is:
Four
Three
One
Two
Q 17. Which of the following is the correct balanced chemical equation for the reaction of iron filings with steam?
Fe(s) + H2O(l) → Fe3O4(s) + H2(g)
3Fe(s) + H2O(l) → 3Fe3O4(s) + 4H2(g)
3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)
Fe(s) + 2H2O(g) → Fe3O4(s) + 2H2(g)
Q 18. An example of reaction in which gas is evolved is
Reaction between lead nitrate and potassium iodide
Burning of magnesium ribbon in air
Reaction between Calcium oxide and water
Reaction between limestone and HCl
Q 19. Which of the following is a combination reaction?
C + O2 → CO2
2 Pb(NO3)2 → 2 PbO + 4 NO2 + O2
2 AgCl → 2 Ag + Cl2
CaCO3 → CaO + CO2
Q 20. Which substance is reduced in the following reaction?ZnO + C → Zn + CO
Zinc oxide
Carbon
Zinc
Carbon monoxide
Q 21. The reaction, Zn + 2HCl → ZnCl2 + H2 is an example of
Double displacement reaction
Displacement reaction
Combination reaction
Decomposition reaction
Q 22. The reaction of calcium oxide with water to form calcium hydroxide is an example of
Combination reaction
Exothermic reaction
Decomposition reaction
Both combination and exothermic reaction
Q 23. NH4OH + FeCl3 → NH4Cl + Fe(OH)3To balance the above equation, the coefficient for ammonium hydroxide and ammonium chloride will be
3 and 2
2 and 3
3 and 1
3 and 3
Q 24. A substance which gets oxidised in a redox reaction is a
Oxidizing agent
Reducing agent
Both oxidizing and reducing agent
None of these
Q 25. In a reaction between zinc and hydrochloric acid, the changes accompanying a reaction are
Evolution of gas and heat
Evolution of steam
Formation of precipitate
Formation of dazzling white light
Q 26. The given reaction indicates that Cu + 2AgNO3  →  Cu(NO3)2 + 2Ag
Copper is more reactive than silver.
Silver is more reactive than copper.
Both are equally reactive.
None of these.
Q 27. An example of combination reaction between an element and compound is
Formation of water
Formation of limestone
Formation of sulphur trioxide
Formation of sulphur dioxide
Q 28. Which atom is balanced in the given equation?   4P + O2 → 2P2O5
Phosphorus
Oxygen
Both Phosphorus and oxygen
Neither Phosphorus nor oxygen
Q 29. When iron fillings are added to a blue coloured copper sulphate solution, what colour change would you observe in solution?
Orange
Green
Red
No change
Q 30. Which of the following statement is correct for a double displacement reaction?
There is an exchange of ions between the reactants.
A single reactant is present.
A single product is formed.
All of these
Q 31. The given equation, Na + H2SO4 → Na2SO4 + H2 is unbalanced. Which one of the following is a correct co-efficient of Na in its balanced equation?
1
2
3
4
Q 32. The reactions in which a precipitate is formed are also known as
Combination reactions
Decomposition reactions
Precipitation reactions
None of these
Q 33. The colours of aqueous solutions of CuSO4 and FeSO4 as observed in the laboratory are
Pale green and light blue respectively.
Light blue and dark green respectively.
Dark blue and dark green respectively.
Dark blue and pale green respectively.
Q 34. 2 AgCl → 2 Ag + Cl2 This reaction is an example of
Thermolytic Decomposition reaction
Electrolytic Decomposition reaction
Photolytic Decomposition reaction
Combination reaction
Q 35. On the basis of sequence of reactions given below, identify the most reactive and least reactive element. B + AX → BX + A A + CY → AY + C
B, A
B, C
C, B
A, B
Q 36. In the equation, Fe + 4H2O → Fe3O4 + H2, which atom is balanced?
Iron
Hydrogen
Oxygen
Both hydrogen and oxygen
Q 37. An example of a physical change is
Reaction between lime and water
Boiling of water
Burning of coal
Burning of magnesium ribbon
Q 38. Dissolving of quick lime in water is accompanied by
Change in colour
Evolution of heat
Formation of precipitate
Change in state
Q 39. Iron displaces copper from its salt solution because
Both Fe and Cu are equally reactive
Fe is less reactive than Cu
Fe is more reactive than Cu
None of the above
Q 40. Select the statements which are correct for the following reaction. ZnO + C → Zn + COi. Zinc is reduced.ii. Zinc oxide is reduced.iii. Carbon is oxidised.iv. Carbon monoxide is oxidised.
(i) and (iii)
(ii) and (iii)
(ii) and (iv)
(i), (ii) and (iii)

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