Master cadre :- good night qes chemistry
Q1. The amount of of substance deposited bye the passage of 1 ampere of current for one second is equal to
(a) equivalent mass
(b) molecular mass
(c) electrochemical equivalent
Q2.In which cell the free energy of chemical reaction is directly converted into electricity
(a) leclanche cell
(b) concentration cell
(c)fuel cell.
(d) lead storage battery
Q3. Which of the following statements are correct regarding dry cell?
(a) zinc container acts as anode
(b)sync container in touch with a paste of MnO2 and carbon
(c) dry cell can easily be charged
(d) graphite rod acts as cathode
Q4. Which of the following metals can displace H2 from an acid
(a)iron
(b) nickel
(c) copper
(d) silver
Q5. Galvanized iron sheets are coated with
(a)C
(b)Cu
(c)Zn
(d)Ni
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