Pre Video Test - Hydrogen and its compounds

A molten ionic hydride on electrolysis gives:
1. H⁺ ion moving towards the cathode.
2. H⁺ ion moving towards the anode.
3. H₂ is liberated at anode.
4. H₂ is liberated at cathode.

Which statement is not correct for hydrogen peroxide?
1. Pure H₂O₂ is fairly stable
2. It sometimes acts as a reducing agent
3. It acts as an oxidising agent
4. Aqueous solution of H₂O₂ is weakly basic

In solid hydrogen, the intermolecular bonding is:
1. ionic
2. van der Waals'
3. metallic
4. covalent

The oxidizing property of H₂O₂ is best explained by assuming that two oxygen atoms in its molecule are:
1. bonded differently
2. bonded similarly
3. bonded covalently
4. bonded by hydrogen bonds

Which is not true in case of H₂O₂?
1. It is more stable in basic solution
2. It acts as strong oxidising agent in acid and basic solutions
3. It is decomposed by MnO₂
4. It behaves as reducing agent towards KMnO₄

Acidified solution of chromic acid on treatement with H₂O₂ yields :
1. ${CrO}_{3} + H_{2} O + O_{2}$
2. ${Cr}_{2} O_{2} + H_{2} O + O_{2}$
3. ${CrO}_{5} + H_{2} O + K_{2} {SO}_{4}$
4. $H_{2} {Cr}_{2} O_{7} + H_{2} O + O_{2}$

Decomposition of H₂O₂ is accompanied by:
1. decrease in free energy
2. increase in free energy
3. no change in free energy
4. evolution of heat

The catalyst used in Bosch process of manufacture of H₂ is:
1. finely divided Ni
2. V₂O₅
3. Pd
4. Fe₂O₃ + Cr₂O₃

A mixture of hydrazine and 60 to 90 percent of H₂O₂ solution is:
1. antiseptic
2. rocket fuel
3. germicide
4. insecticide

10.

Which conversion is not done by H₂O₂ ?
1. ${Fe}^{2 +} \overset{}{\to} {Fe}^{3 +}$ (acidic medium)
2. $PbS \overset{}{\to} {PbSO}_{4}$
3. ${Fe}^{+} \overset{}{\to} {Fe}^{3 +}$ (alkaline medium)
4. $KI \overset{}{\to} I_{2}$

11.

(I) $H_{2} O_{2} + O_{3} \overset{}{\to} H_{2} O + 2 O_{2}$
(II) $H_{2} O_{2} + {Ag}_{2} O \overset{}{\to} 2 Ag + H_{2} O + O_{2}$
Role of hydrogen peroxide in the above reactions is respectively
1. oxidising in (I) and reducing in (II)
2. reducing in (I) and oxidising in (II)
3. reducing in (I) and (II)
4. oxidising in(I) and (II)

12.

$H_{2} O_{2}$ acts as antiseptic due to its –
(1) Reducing property
(2) Oxidising property
(3) Bleaching property
(4) Acidic property

Fill OMR Sheet*

*If above link doesn't work, please go to test link from where you got the pdf and fill OMR from there

CLICK HERE to get FREE ACCESS for 2 days of ANY NEETprep course

Please be patient as the PDF generation may take up to a minute.

Fill OMR Sheet*