Which of the following on heating produces NO2?
1. NaNO3
2. AgNO3
3. NH4NO3
4. NH4NO2
Difficulty Level:
The formation of is difficult compared to because
1. lone pair of phosphorous is optically inert
2. lone pair of phosphorous resides in almost pure p- orbital
3. lone pair of phosphorous resides at sp3 orbital
4. lone pair of phosphorous resides in almost pure s- orbital
Difficulty Level:
Concentrated nitric acid reacts with iodine to give:
1. HOI
2. HI
3. HIO3
4. HIO4
Difficulty Level:
Partial Hydrolysis of one mole of peroxodi-sulphuric acid produces:
1. two moles of sulphuric acid
2. two moles of peroxomono-sulphuric acid
3. one mole of sulphuric acid, one mole of peroxomono-sulphuric acid
4. one mole of sulphuric acid, one mole of peroxomono-sulphuric acid and one mole of hydrogen peroxide
Difficulty Level:
Which of the following is the correct statement?
1. F2 has higher dissociation energy than Cl2
2. F has higher electron affinity than Cl
3. HF is stronger acid than HCl
4. Boiling point increases down the group in halogens
Difficulty Level:
Incorrectly matched characteristic is:
1. S8: covalent lattice
2. P4: tetrahedron
3. S52-: zigzag
4. SiO2: Covalent lattice
Difficulty Level:
Among the following compounds, which on heating do not produce N2?
1. (NH4)2Cr2O7
2. NH4Cl+NaNO2
3. NH4Cl+CaO
4. Ba(N3)2
Difficulty Level:
Which of the following oxyacid contains both P-H and P-P bond simultaneously?
1. H4P2O5
2. H4P2O7
3. H4P2O6
4. None
Difficulty Level:
In which process does the nitrogen undergo oxidation?
1. N2 2NH3
2. N2O4 2NO2
3. NO3- N2O5
4. NO2- NO3-
Difficulty Level:
Which of the following has been arranged in order of decreasing bond dissociation energy:
1. P-O>Cl-O>S-O
2. P-O>S-O>Cl-O
3. S-O>Cl-O>P-O
4. Cl-O>S-O>P-O
Difficulty Level: