Which element from multiple bonds with itself and with carbon and oxygen?
1. P, As
2. N, As
3. N, P
4. N
A compound that cannot hydrolysed with water is -
1.
2.
3.
4.
The correct order of acidic strength of oxyacid of phosphorous is
(1) H3PO2 > H3PO3 > H3PO4
(2) H3PO4 > H3PO3 > H3PO2
(3) H3PO3 > H3PO2 > H3PO4
(4) H3PO2 > H3PO4 > H3PO3
Peroxoacids of sulphur among the following is -
1. H2SO5 and H2S2O8
2. H2SO5 and H2S2O7
3. H2S2O7 and H2S2O8
4. H2S2O6 and H2S2O7
Sulphuric acid is used:
1. | In lead storage batteries | 2. | In making fertilizers |
3. | As a dehydrating agent | 4. | All of the above |
Which of the following is responsible for turning moist starch iodide paper blue when it is brought in contact with O3?
1. Liberation of iodine
2. Liberation of O2
3. Formation of alkali
4. All of these
Which of the following is in correct sequence in terms of acid nature?
1. HClO2 < HClO3 < HClO4
2. H3PO4 < H3PO3 < H3PO2
3. CH4 < NH3 < H2O < HF
4. All of the above.
Which halogen produces O2 when combined with hot concentrated NaOH?
1. F2
2. Cl2
3. Br2
4. l2
Among chalcogen, the highest tendency to form ion is exhibited by
1. Oxygen
2. Sulphur
3. Tellurium
4. Selenium
Which one of the following is not a pseudo halide?
1. CNO-
2. RCOO-
3. OCN-
4.