If the chemical reaction given below is assumed to be balanced, what will be the values of a, b, c, and d, respectively?

$I{O}_3^{-}+a{I}^{-}+b{H}^{+}\to c{H}_{2}O+d{I}_2$

1. 5, 6, 3, 3 

2. 5, 3, 6, 3

3. 3, 5, 3, 6

4. 5, 6, 5, 5

The number of moles of KMnO₄ reduced by one mole of KI in an alkaline medium is:

1. One fifth

2. five

3. One

4. Two

In the equation

$H_{2}S+2HN{O}_3\to 2H_{2}O+2N{O}_2+S$

The equivalent weight of hydrogen sulphide is [BVP 2003]

(1) 16

(2) 68

(3) 34

(4) 17

If 1.2 g of metal displace 1.12 litre hydrogen at normal temperature and pressure, equivalent weight of metal would be 

(1) 24

(2) 12

(3) 1.2 $÷$ 11.2

(4) 1.2 $\times$ 11.2

The equivalent weight of phosphoric acid (H₃PO₄) in the reaction $NaOH+H_{3}P{O}_4\to Na{H}_{2}P{O}_4+H_{2}O$ is

(1) 25

(2) 49

(3) 59

(4) 98

What is the equivalent mass of $I{O}_4^{-}$ when it is converted into I₂ in acid medium

(1) M/6

(2) M/7

(3) M/5

(4) M/4

In an alkaline medium ClO₂ oxidize H₂O₂ in O₂ and reduces itself in Cl^– . How many moles of H₂O₂ will be oxidized by one mole of ClO₂?

Oxidation number of oxygen in potassium super oxide (KO₂) is:

1. – 2

2. – 1

3. – 1/2

4. – 1/4

The oxidation state of Cu in  ${\mathrm{YBa}}_2{\mathrm{Cu}}_3{\mathrm{O}}_7$  is -

(Yttrium = +3)

In a balanced equation $H_{2}S{O}_4+xHI\to H_{2}S+y{I}_2+z{H}_{2}O$, the values of x, y, z are :