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Practice your
Chemistry Knowledge
HEPTA INTERACTION QUESTIONS
(11th series)
Scopes : Electrochemistry and related
reactions.
Q1. In the electrolysis of dilute H2SO4,
using Pt electrode
(a) O2 is produced at the cathode
(b) SO2 is produced at the cathode
(c) H2 is liberated at the cathode
(d) O2 is produced at the anode
Q2. A current of 9.65 A is drawn from a
Daniel cell for exactly 1 hour. The loss
in mass of anode & gain in the mass of
cathode will be
(a) 11.77 g, 11.43 g
(b) 11.43 g, 11.77 g
(c) 23.54 g, 22.86 g
(d) 22.86 g, 23.54 g
Q3. The most durable metal plating on
iron to prevent against corrosion is
(a) Nickel plating
(b) copper plating
(c) tin plating
(d) Zinc plating
Q4. The condition produced by aerial
oxidation of fats and oils in food marked
by unpleasant smell is called
(a) Acidity
(b) corrosion
(c) bacisity
(d) rancidity
Q5.In the context of redox reactions, the
removal of hydrogen from a substance is
known as
(a) oxidation (b) dehydration
(c) reduction (d) dehydrogenation
Q6. In order to prevent the spoilage of
potato chips they are are packed in plastic
bags in an atmosphere of
(a) Cl2
(b) H2
(c) N2
(d) O2
Q7. Consider the following reaction of
metal, M
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(a) Combination reaction as well as
reduction reaction
(b) Decomposition reaction as well
as oxidation reaction
(c) Oxidation reaction as well as
displacement reaction
(d) Combination reaction as well as
oxidation
Q8. Which of the following can be
decomposed by the action of light
(a) NaCl
(b) KCl
(c) AgCl
(d) CuCl
Q9. You are given the solution of lead
nitrate and which of the following solution
will be added to get a yellow precipitate
(a) KCl
(b) KNO3
(c) K2S
(d) KI
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water is characterized by
(a) Evolution of H2
(b) formation of slaked lime
(c) Change in temperature
(d) Change in colour of the product
Answers in the 12th series
Ans. of 10th Series
Q1 (c), Q2 (b), Q3 (a), Q4 (d), Q5 (c), Q6
(b), Q7 (b), Q8 (b), Q9 (a), Q10 (d)
Hepta Interaction Centre most welcomes
your suggestion(s) to improve this sheet
in the next series.
M. Aken Singh (9862125442)
e-mail:-aken569@gmail.com
Or
aken_maibam@yahoo.co.in