A gas that should not be collected over water is-

1. ${\mathrm{H}}_2$

2. ${\mathrm{N}}_2$

3. ${\mathrm{CH}}_4$

4. HCl

 

The correct increasing order of extent of hydrolysis is :
1. ${\mathrm{CCl}}_4<{\mathrm{MgCl}}_2<{\mathrm{AlCl}}_3<{\mathrm{SiCl}}_4<{\mathrm{PCl}}_5$           
2. ${\mathrm{CCl}}_4<{\mathrm{AlCl}}_3<{\mathrm{MgCl}}_2<{\mathrm{PCl}}_5<{\mathrm{SiCl}}_4$
3. ${\mathrm{CCl}}_4<{\mathrm{SiCl}}_4<{\mathrm{PCl}}_5<{\mathrm{AlCl}}_3<{\mathrm{mgCl}}_2$           
4. ${\mathrm{CCl}}_4<{\mathrm{PCl}}_5<{\mathrm{SiCl}}_4<{\mathrm{AlCl}}_3<{\mathrm{MgCl}}_2$

Inorganic benzene reacts with HCl to form a compound ${\mathrm{B}}_3{\mathrm{N}}_3{\mathrm{H}}_9{\mathrm{Cl}}_3$. The protonation occurs at:

(1) B-atom 

(2) N-atom

(3) First at B-atom then rearrangers into N-atom 

(4) First N-atom then rearrangers into B-atom 

The correct order of initials T or F for the following statements is -

(Use T if statement is true and F if it is false)

(i)$\left({\mathrm{CH}}_3{)}_2\mathrm{P}\right({\mathrm{CF}}_3{)}_{3<mspace\; width="1em"></mspace>}$is non-polar $\left({\mathrm{CH}}_3{)}_3\mathrm{P}\right({\mathrm{CF}}_3{)}_{2<mspace\; width="1em"></mspace>}$ is polar molecule 

(ii) ${\mathrm{CH}}_3\hat{\mathrm{P}}{\mathrm{CH}}_3$ bond angles are equal in a molecule

(iii) ${\mathrm{PF}}_3$ will be more soluble in the polar solvent than ${\mathrm{SiF}}_4$

1. TTF               

2. FFT                     

3. FFF                           

4. FTT

Which substance has the strongest London dispersion forces?

1. $Si{H}_4$

2. $C{H}_4$

3. $Sn{H}_4$

4. $Ge{H}_4$

The compound that has the lowest boiling point is:

Which of the following is the correct order for increasing bond angle?

$\left(a\right)<mspace\; width="1em"></mspace>N{H}_3<P{H}_3<As{H}_3<Sb{H}_3<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left(b\right)H_{2}O<O{F}_2<C{l}_{2}O$
$\left(c\right)<mspace\; width="1em"></mspace>H_{3}T{e}^{+}<H_{3}S{e}^{+}<H_3{S}^{+}<H_3{O}^{+<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>}<mspace\; width="1em"></mspace>\left(d\right)<mspace\; width="1em"></mspace>B{F}_3<BC{I}_3<BB{r}_3<B{I}_3$

The correct statement about hydrolysis of ${\mathrm{BCl}}_3$ and ${\mathrm{NCl}}_3$ is-

1. ${\mathrm{NCl}}_3$ is hydrolysed and gives $\mathrm{HOCl}$ but ${\mathrm{BCl}}_3$ is not hydrolysed

2. Both ${\mathrm{NCl}}_3$ and ${\mathrm{BCl}}_3$ on hydrolysis gives $\mathrm{HCl}$

3. ${\mathrm{NCl}}_3$ on hydrolysis gives $\mathrm{HOCl}$  but ${\mathrm{BCl}}_3$ gives $\mathrm{HCl}$

4. Both ${\mathrm{NCl}}_3$ and ${\mathrm{BCl}}_3$ on hydrolysis gives $\mathrm{HOCl}$

The correct sequence of the polarity of the following molecule is
a. Benzene                         

b. Inorganic Benzene

c. ${\mathrm{PCl}}_3{\mathrm{F}}_{2<mspace\; width="1em"></mspace>}$                           

d. ${\mathrm{PCl}}_2{\mathrm{F}}_3$

(Where P=polar, NP=non-polar)

The incorrect order of boiling point is-

1. ${\mathrm{H}}_2\mathrm{O}<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>{\mathrm{CH}}_3\mathrm{OH}$             

2. $\mathrm{N}{\left({\mathrm{CH}}_3\right)}_3<<mspace\; width="1em"></mspace>\mathrm{NH}{\left({\mathrm{CH}}_3\right)}_2$

3. ${\mathrm{H}}_3{\mathrm{PO}}_4><mspace\; width="1em"></mspace>{\mathrm{Me}}_3{\mathrm{PO}}_4$         

4. ${\mathrm{CH}}_3{\mathrm{N}}_3><mspace\; width="1em"></mspace>{\mathrm{HN}}_3$