What is the principal energetic factor in the lack of miscibility between $C_6{H}_{14}\left(l\right)$ and $H_{2}O\left(l\right)$?

1.  The strength of intermolecular forces of attraction between $C_6{H}_{14}\left(l\right)$ molecules

2.  The strength of intermolecular forces of attraction between $H_{2}O\left(l\right)$ molecules

3.  The differences between the molecular weights of the molecules

4.  The difference in electronegativity between carbon and hydrogen

 

The value of 'x' in ${\left({\mathrm{NH}}_4\right)}_2<mspace\; width="1em"></mspace>\mathrm{Fe}{\left({\mathrm{SO}}_4\right)}_{\mathrm{x}}.6{\mathrm{H}}_2\mathrm{O}$ is

1.  1

2.  2

3. 3

4.  4

The correct structure of $Cl{F}_3$ is:

1.		2.
3.		4.

Select the correct statement regarding $Xe{O}_2{F}_2$ among the folowing.

a.  Xe is $s{p}^{3}d$ hybridised.

b.  4 bond pairs and 1 lone pair are present around Xe.

c.  Shape of $Xe{O}_2{F}_2$ is square pyramidal.

d.  Contains $\mathrm{d\pi }-p\pi$ bonds.

1.  a and b

2.  a,  and d

3.  a, b and d

4.  b, c and d

Consider the following compounds:
\(LiCl, BeF_2, BCl_3, IF_7, CH_4, SF_6, PCl_5\)
How many of these compounds have an expanded octet around the central atom?

1. Two (2)

2. Four (4)

3. Six (6)

4. Three (3)

Which of the following atomic orbitals will show zero overlaps? (consider x-axis as the molecular axis)

1.  $P_x, P_x$

2.  $P_y, P_y$

3.  $P_y, P_z$

4.  $P_x, s$

Which is the correct increasing order of the lattice energies for the compounds NaCl, NaF, KCl, and RbCl?

1.  KCl < RbCl < NaCl < NaF

2.  NaF < NaCl < KCl < RbCl

3.  RbCl < KCl < NaCl < NaF

4.  NaCl < RbCl < NaF < KCl

Which of the following molecules has the maximum covalent character?

1. NaH

2. ${\mathrm{Na}}_2\mathrm{S}$

3. ${\mathrm{CaCl}}_2$

4. ${\mathrm{SnCl}}_4$

Identify the species in which the central atom exhibits \(sp^2\) hybridization:

1. \(PH_3\)
2. \(NH_3\)
3. \(CH_3^+\)
4. \(SbH_3\)

Which of the following contain a maximum number of electrons in the antibonding molecular orbitals?

1.  ${O_2}^{2-}$

2.  $O_2$

3.  ${O_2}^{1-}$

4.  ${O_2}^{+}$