Question

Exercises
1. Choose the
Choose the most correct option
vidction numbers of Cl atoms marked
C and clb in CaOCI, (bleaching
A. Oxidction me
powder) are
C1
Ca
O-CI
a. zero in each
b. -1 in Cl" and +1 in Clb
c. +1 in Clº and -1 in CI"
d. 1 in each

Which of the following is not an example
of redox reacton ?
a.CuO+H, Cu+H,0
b.Fe,O,+3C0, 2Fe+3CO,
c. 2K+F, 2KF
d. BaCl,+H,SO, BaSO,+2HCI

C. A compound contains atoms of three
elements A, B and C. If the oxidation
state of A is +2, B is +5 and that of C is
-2, the compound is possibly represented
by
a. A, (BC),
b. A, (BC)2
c. A, (B,C),
d. ABC2

D. The coefficients p, q, r, s in the reaction
p Cr,0,20+ q Fe2®— r Cre+s Fe3e
+ H2O
respectively are :
a. 1, 2, 6, 6,
b. 6, 1, 2,4
c. 1, 6, 2,6
d. 1, 2, 4, 6
​

Answer 1

Explanation:

D.a

C.d

B.c

A.b

oxidation number -1 for cl in caocl