An ionic compound is dissolved simultaneously in heavy water and ordinary water, its solubility is –
1. Larger in heavy water
2. Smaller in heavy water
3. Solubility is same in both waters
4. Smaller in simple water
The method used for the preparation of is -
1. Cold H2SO4 + BaO2.8H2O
2. HCl + BaO2
3. Conc. H2SO4 + Na2O2
4. H2 + O2
The oxide that gives hydrogen peroxide on the treatment with a dilute acid is –
(A)
(B)
(C)
(D)
The oxidising property of 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
has higher boiling point than because.
(1) is a smaller molecule and hence more closely packed
(2) The bond angle in is more than in and hence the former molecules are more tightly packed
(3) Of intermolecular hydrogen bonding in liquid
(4) The latent heat of vaporisation is higher for than for
On partial hydrolysis of one mole of peroxodisulphuric acid produces
1. two moles of sulphuric acid
2. two moles of peroxomonosulphuric acid
3. one mole of sulphuric acid and one mole of peroxomonosulphuric acid
4. one mole of sulphuric acid, one mole of peroxomonosulphuric acid and one mole of hydrogen peroxide.
The maximum possible number of hydrogen bonds a water molecule can form is –
(1) 2
(2) 4
(3) 3
(4) 1
acts as antiseptic due to its –
(1) Reducing property
(2) Oxidising property
(3) Bleaching property
(4) Acidic property
A compound that has both polar and non-polar bonds is –
1.
2.
3.
4.
The most reactive state of hydrogen is –
(1) Atomic hydrogen
(2) Heavy hydrogen
(3) Molecular hydrogen
(4) Nascent hydrogen