671. A solution of sodium sulfate was electrolyzed using some inert electrodes the products at the electrodes are:
A. O2, H2
B. O2, Na
C. O2, SO2
D. O2, S2O
672. The monovalent metal is deposited after 10 minutes of running a current of 9.65 amperes. The metal’s atomic mass is:
A. 10
B. 50
C. 30
D. 96
673. How many grams of copper can be released in a copper sulfate solution by the same current flowing for the same amount of time? A certain current releases 0.5 grams of hydrogen in 2H.
A. 12.7 gm
B. 15.9 gm
C. 31.8 gm
D. 63.5 gm
674. The structure of H2O2 is?
(A) Open Book Like
(B) Linear
(C) Planar
D. Spherical
675. C – H bond distance smallest in?
(A) Ethyne
(B) Methane
C. Ethene
(D) All of the above
676. Which of the following elements has its outermost energy level complete?
(A) Kr
(B) Ar
(C) Ne
D. All of the above
677. In the graph of atomic volume versus atomic weight, the elements corresponding to peaks in the curve belong to?
(A) Group – 1
B. Group – 4
(C) Group – 14
(D) Group – 18
678. Which among the following has the highest melting point?
A. KCl
(B) RbCl
(C) LiCl
(D) NaCl
679. Which one of the following elements has chemical properties most like those of sulfur?
A. Se
(B) Cl
(C) P
(D) N
680. Colloidal silver is obtained by the reduction of silver nitrate solution with?
(A) Fructose
(B) Hydrogen
(C) Sucrose
D. Glucose
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