The oxidation state of Cr in ${\mathrm{CrO}}_6$ is:

1.	–6	2.	+12
3.	+6	4.	+4

In the reaction, $2C{u}^{+}\to Cu+C{u}^{2+}$.

The equivalent weight of $C{u}^{+}$ is (Ionic weight of $C{u}^{+}$= M)

(1) $\frac{M}{2}$

(2) M

(3) 2M

(4) $\frac{M}{3}$

The oxidation number of S in the product after the reaction of Na₂S₂O₃  and I₂ in an acidic medium is-

1. +2

2. +2 and +3

3. 0 and +5

4. +6

For the reaction $2H_{3}P{O}_2\to H_{3}P{O}_4+P{H}_3$, the equivalent mass of   $H_{3}P{O}_2$ is

1. $\frac{M}{4}$

2. $\frac{M}{3}$

3. $\frac{M}{2}$

4. M

Oxidation state of titanium in pervoskite is

(1) +2

(2) +3

(3) +4

(4) +5

Highest oxidation number of nitrogen is in

(1) Nitrobenzene

(2) Nitric acid

(3) $N{O}_2$

(4) Both (2) & (3) 

Oxidation states of C in Toluene is/are

1. -3

2. -1

3. 0

4. All of these

 $In<mspace\; width="1em"></mspace>a<mspace\; width="1em"></mspace>KMn{O}_4+bFeS{O}_4+c{H}_{2}S{O}_4$
$\to dF{e}_2{\left(S{O}_4\right)}_3+e{K}_{2}S{O}_4+fMnS{O}_4+g{H}_{2}O,$
$Correct<mspace\; width="1em"></mspace>relation<mspace\; width="1em"></mspace>is$

(1) (a+e+f) = d

(2) c = g = d + e + f

(3) b = a + d + e + f

(4) All of these 

Oxidation state of 'P' in $Ba\left(HP{O}_3\right)$ is

(1) +1

(2) +2

(3) +3

(4) +4

Which of the following is not a disproportionation reaction?