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.
2.
3.
4.
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
Which conversion is not done by H2O2 ?
1. (acidic medium)
2.
3. (alkaline medium)
4.
(I)
(II)
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)
acts as antiseptic due to its –
(1) Reducing property
(2) Oxidising property
(3) Bleaching property
(4) Acidic property