Compound that does not exhibit hydrogen bonding is-

1.	CH3CH2OH	2.
3.		4.

Which of the following molecules exhibits H-bonding?

The correct order of H-bond strength in the following compounds is:

1. H₂O > H₂O₂ > HF > H₂S

2. HF >  H₂O₂ > H₂O > H₂S

3. HF > H₂O > H₂S > H₂O₂

4. HF > H₂O > H₂O₂ > H₂S

In which of the following compounds is an intramolecular hydrogen bond present?

The incorrect order of the force of attraction among the given species is :

1. HI > HBr> ${\mathrm{Cl}}_2$

2. ${\mathrm{CCl}}_4>{\mathrm{CH}}_2{\mathrm{Cl}}_2>{\mathrm{CH}}_3\mathrm{Cl}>{\mathrm{CH}}_4$

3. n- Pentane > iso-Pentane > neo-Pentane

4. ${\mathrm{OH}}_2>\mathrm{O}{\left({\mathrm{CH}}_3\right)}_2>{\mathrm{OBr}}_2$

The compound that has the lowest boiling point is:

The incorrect order of boiling point is-

1. ${\mathrm{H}}_2\mathrm{O} > {\mathrm{CH}}_3\mathrm{OH}$             

2. $\mathrm{N}{\left({\mathrm{CH}}_3\right)}_3< \mathrm{NH}{\left({\mathrm{CH}}_3\right)}_2$

3. ${\mathrm{H}}_3{\mathrm{PO}}_4> {\mathrm{Me}}_3{\mathrm{PO}}_4$         

4. ${\mathrm{CH}}_3{\mathrm{N}}_3> {\mathrm{HN}}_3$

Iodine molecules are held in the solid lattice by............

(1) London forces                     (2) dipole-dipole interactions

(3) Covalent bonds                   (4) coulombic force

Out of the two compounds shown below, the vapour pressure of B at a particular temperature is expected to be :

(A)  and (B) 

(1) Higher than that of A

(2) Lower than that of A

(3) same as that of A 

(4) can be higher or lower depending upon the size of the vessel 

The type of molecular forces of attraction present in the following compound is: