If ${\mathrm{CdI}}_2$ is pink in colour, the ${\mathrm{CdCl}}_2$ will be '.............' coloured.

(1) yellow         

(2) red                 

(3) blue                   

(4) cannot be predicted

Which are true statements among the following?

(1) $P{H}_5$ and $BiC{l}_5$ does not exist 

(2) $p\pi$-$d\pi$ bonds are present in $S{O}_2$ 

(3) Electrons travel with speed of light 

(4) $Se{F}_4$ and $C{H}_4$ has same charge on central atom

(5) ${I_3}^{+}$ has bent geometry 

(a) 1,3 

(b) 1,2,5 

(c) 1,3,5

(d) 1,2,4 

In which molecule all atoms are coplanar?

1. $C{H}_4$

2. $B{F}_3$

3. $P{F}_3$

4. $N{H}_3$

Among the following which is paramagnetic?
1. \(\text{Cl}_2 \text{O}_6\)
2. \(\text{Cl}_2 \text{O}_7\)
3. \(\text{Cl}_2 \text{O}\)
4. \(\text{ClO}_2\)

The correct statement among the following for a compound having a higher dipole moment is-

$N{F}_3$ is:

(1) non-polar compound 

(2) electrovalent compound 

(3) having low value of dipole moment than $N{H}_3$

(4) having more dipole moment than $N{H}_3$

Polarization of electrons in acrolein may be written as: 

(a) $\stackrel{{\delta }^{-}}{C}{H}_2=CH-\stackrel{{\delta }^{+}}{C}H=O$

(b)$\stackrel{{\delta }^{-}}{C}{H}_2=CH-CH=\stackrel{{\delta }^{+}}{O}$

(c) $\stackrel{{\delta }^{-}}{C}{H}_2=\stackrel{{\delta }^{+}}{C}H-CH=O$

(d) $\stackrel{{\delta }^{+}}{C}{H}_2=CH-CH=\stackrel{{\delta }^{-}}{O}$

$PC{l}_5$ exists but $NC{l}_5$ does not because:

1. Nitrogen has no vacant d-subshells .

2. $NC{l}_5$ is unstable .

3. Nitrogen atom is much smaller than p .

4. Nitrogen is highly inert . 

The bond angle between two hybrid orbitals is ${105}^{°}$. The % s character in orbital is-

Which bond angle would result in the maximum dipole moment for the triatomic molecule $X{Y}_2$ 

1. ${90}^{°}$

2. ${120}^{°}$

3. ${150}^{°}$

4. ${180}^{°}$