Which of the following compound does not exist?
1. XeOF4
2. NeF2
3. XeF2
4. XeF6
1. | H2Te | 2. | H2Se |
3. | H2O | 4. | H2S |
P forms multiple bonds in POCl3 by using
1.
2.
3.
4. None of the above.
Which of the following statements about phosphorus is false?
1. It is non-metal.
2. It exists as a tetrahedral molecular solid.
3. It is less reactive than nitrogen.
4. P-P bond is much weaker than bond.
The basicity of the acids H3PO2, H3PO3, H3PO4 and H4P2O7 are, respectively:
1. 1 , 2 , 3 , 7
2. 2 , 3 , 4 , 7
3. 1 , 2 , 3 , 4
4. 1 , 2 , 3 , 5
Which of the following acids is the strongest?
1. H3PO2
2. H3PO3
3. H4P2O7
4. H3PO4
The element that does not form pentoxide is:
1. As
2. Sb
3. Bi
4. P
The compound among the following with the lowest pKa value is?
1. H2O
2. H2S
3. H2Se
4. H2Te
The oxide of a non-metal possesses the following characteristics:
i. | It is both a proton donor and a proton acceptor. |
ii. | It is a poor conductor of electricity. |
iii. | It reacts readily with basic and acidic oxides. |
iv. | It oxidises Fe at boiling point. |
The formula for oxide is:
1. H2O
2. CO2
3. H2O2
4. NO
Which of the following hydrides is the least poisonous?
1.
2.
3.
4.