A compound 'X' upon reaction with produces a colorless gas 'Y' with rotton fish smell. Gas 'Y' is absorbed in a solution of to give as one of the products. Predict the compound 'X'
1.
2.
3.
4.
Compound of sulphur that has linkage among the following is:
1.
2.
3.
4.
Match the compounds of Xe in column I with the molecular structure in column II.
Column-I | Column-II |
(a) XeF2 | (i) Square planar |
(b) XeF4 | (ii) Linear |
(c) XeO3 | (iii) Square pyramidal |
(d) XeOF4 | (iv) Pyramidal |
(a) | (b) | (c) | (d) | |
1. | (ii) | (i) | (iii) | (iv) |
2. | (ii) | (iv) | (iii) | (i) |
3. | (ii) | (iii) | (i) | (iv) |
4. | (ii) | (i) | (iv) | (iii) |
Which one of the following reactions does not come under hydrolysis type reaction?
1.
2.
3.
4.
I: | Acid strength increases in the order given as HF < HCl < HBr < HI. |
II: | As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCI, HBr, and HI decreases and so the acid strength increases. |
1. | I is correct but II is false. |
2. | I is incorrect but II is true. |
3. | Both I and II are true. |
4. | Both I and II are false. |
Choose the incorrect statement among the following regarding noble gases:
1. | Noble gases have weak dispersion forces. |
2. | Noble gases have large positive values of electron gain enthalpy. |
3. | Noble gases are sparingly soluble in water. |
4. | Noble gases have very high melting and boiling points. |
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?
1. | NH3 < PH3 < AsH3 < SbH3 | Increasing acidic character |
2. | CO2 < SiO2 < SnO2 < PbO2 | Increasing oxidizing power |
3. | HF < HCl < HBr < HI | Increasing acidic strength |
4. | H2O < H2S < H2Se < H2Te | Increasing pKa values |
Identify the correct formula of 'oleum' from the following
1. H2S2O7
2. H2SO3
3. H2SO4
4. H2S2O8
Among the following oxoacids of phosphorus ,the strongest reducing property is for:
1. H4P2O7
2. H3PO3
3. H3PO2
4. H3PO4
The correct structure of tribromo octoxide is:
1. | |
2. | |
3. | |
4. |