Multiple Choice Questions
Q1.
The removal of Hydrogen from a substance is known as ----
(i) oxidation
(ii) dehydration
(iii) reduction
(iv) crystallisation
Q2.
The development of unpleasant smell and taste in fat and oil containing foods due to aerial oxidation is ----
(i) acidity
(ii) rancidity
(iii) displacement
(iv) sublimation
Q3.
In order to obtain a yellow precipitate from Lead Nitrate, you should mix a solution of ----
(i) Potassium Chloride
(ii) Potassium Iodide
(iii) Potassium Bromide
(iv) Potassium Cyanide
Q4.
In exothermic reactions ----
(i) thermostat is required
(ii) energy is released
(iii) Energy is absorbed
(iv) None of the above
Q5.
Find a & b in -
(i) a = 1, b = 1
(ii) a = 1, b = 2
(iii) a = 3, b = 1
(iv) a = 2, b = 1
Q6.
Which gas/gases are released when FeSO4 is heated?
(i) Sulphur Dioxide
(ii) Sulphur Trioxide
(iii) Both (i) & (ii)
(iv) None of these
Q7.
Which compound is used in black and white photography?
(i) Silver Chloride
(ii) Silver Oxide
(iii) Aluminium Oxide
(iv) Aluminium Chloride
Q8.
When Lead Nitrate is heated, which gas & of which colour did you notice?
(i) colourless Carbon Dioxide
(ii) colourless Nitrogen gas
(iii) brown Sulphur Dioxide
(iv) brown Nitrogen Dioxide
Q9.
Which is not a characteristic of chemical reactions?
(i) change in colour
(ii) change in state
(iii) change in magnetic field
(iv) evolution of a gas
Q10.
What will happen when dilute H2SO4 reacts with Zn?
(i) Hydrogen gas evolve
(ii) Carbon dioxide gas evolve
(iii) Zinc oxide formed
(iv) Zinc carbonate formed
Q11.
Electrolysis of water is a ----.
(i) Combination reaction
(ii) displacement reaction
(iii) double displacement reaction
(iv) None of these
Q12.
In this reaction,
(i) Chlorine is the reducing agent
(ii) Hydrogen sulphide is the oxidising agent
(iii) Both (i) & (ii)
(iv) None of these
Comment down your thoughts :-)
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ANSWERS
Ans1. (i)
Ans2. (ii)
Ans3. (ii) Ans4. (ii)
Ans5. (iv)
Ans6. (iii) Ans7. (i)
Ans8. (iv)
Ans9. (iii) Ans10. (i)
Ans11. (iv)
Ans12. (iv)
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