Hydrogen peroxide is now generally prepared on industrial scale by the:

(1) Action of H₂SO₄ on barium peroxide

(2) Action of H₂SO₄ on sodium paraoxide

(3) Electrolysis of 50% H₂SO₄

(4) Burning hydrogen in excess of oxygen

${\mathrm{H}}_2{\mathrm{O}}_2$ functions as a 

1. Bleaching agent

2. Oxidising agent

3. Oxidant for a rocket fuel

4. All of the above

$\mathrm{Fe}+{\mathrm{H}}_2\mathrm{O}\stackrel{1023-1073\mathrm{K}}{\to } \mathrm{Product}$
$\left(\mathrm{Steam}\right)$
$\mathrm{Product} \mathrm{formed} \mathrm{is}$
$1. \mathrm{FeO}+{\mathrm{H}}_2$

2. ${\mathrm{Fe}}_2{\mathrm{O}}_3+{\mathrm{H}}_2\mathrm{O}$

3. ${\mathrm{Fe}}_2{\mathrm{O}}_3+{\mathrm{H}}_2$

4. ${\mathrm{Fe}}_3{\mathrm{O}}_4+{\mathrm{H}}_2$

A compound that can remove both temporary and permanent hardness of water is -

1. ${\mathrm{NaHCO}}_3$

2. Boiling

3. $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$

4. ${\mathrm{Na}}_6{\mathrm{P}}_6{\mathrm{O}}_{18}$

An isotope that is used as a tracer in a chemical reaction is-

1. ${\mathrm{H}}_1^1$

2. ${\mathrm{H}}_1^2$

3. ${\mathrm{H}}_1^3$

4. Ortho hydrogen

From the following statements regarding H₂O₂, choose the incorrect statement:

(1) It can act only as an oxidising agent

(2) It decomposes on exposure to light

(3) It has to be stored in plastic or wax lined glass bottles in dark

(4) It has to be kept away from dust

Calcium carbide with heavy water generates-

1.  $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$

2.  ${\mathrm{C}}_2{\mathrm{D}}_2$

3.  ${\mathrm{D}}_2{\mathrm{O}}_2$

4.  ${\mathrm{CaD}}_2$

Calgon ( a water softener) is : 

1. ${\mathrm{Na}}_2\left[{\mathrm{Na}}_4{\left({\mathrm{PO}}_3\right)}_6\right]$

2. ${\mathrm{Na}}_4{\left[{\mathrm{Na}}_2\left({\mathrm{PO}}_3\right)\right]}_6$

3. ${\mathrm{Na}}_2{\left[{\mathrm{Na}}_4\left({\mathrm{PO}}_4\right)\right]}_6$

4. ${\mathrm{Na}}_4{\left[{\mathrm{Na}}_2\left({\mathrm{PO}}_4\right)\right]}_6$

Hydrogen peroxide in its reaction with ${\mathrm{KIO}}_4 \mathrm{and} {\mathrm{NH}}_2\mathrm{OH}$ respectively is acting as a 

1. reducing agent, oxidising agent

2. reducing agent, reducing agent

3. oxidising agent, oxidising agent

4. oxidising agent, reducing agent

Reaction among the following where ${\mathrm{H}}_2{\mathrm{O}}_2$ acts as a reducing agent is-

a. ${\mathrm{H}}_2{\mathrm{O}}_2+2{\mathrm{H}}^{+}+2{\mathrm{e}}^{-}\to 2{\mathrm{H}}_2\mathrm{O}$

b. ${\mathrm{H}}_2{\mathrm{O}}_2-2{\mathrm{e}}^{-}\to {\mathrm{O}}_2+2{\mathrm{H}}^{+}$

c. ${\mathrm{H}}_2{\mathrm{O}}_2+2{\mathrm{e}}^{-}\to 2{\mathrm{OH}}^{-}$

d. ${\mathrm{H}}_2{\mathrm{O}}_2+2{\mathrm{OH}}^{-}-2{\mathrm{e}}^{-}\to {\mathrm{O}}_2+2{\mathrm{H}}_2\mathrm{O}$

1. a, b

2. c, d

3. a, c

4. b, d