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)$\left({\mathrm{CH}}_3{)}_2\mathrm{P}\right({\mathrm{CF}}_3{)}_{3 }$is non-polar $\left({\mathrm{CH}}_3{)}_3\mathrm{P}\right({\mathrm{CF}}_3{)}_{2 }$ 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?

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

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

b. Inorganic Benzene

c. ${\mathrm{PCl}}_3{\mathrm{F}}_{2 }$                           

d. ${\mathrm{PCl}}_2{\mathrm{F}}_3$

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

When the substances Si, KCl, $C{H}_3$OH and $C_2{H}_6$ are arranged in order of increasing melting point , what is the correct order?

(1) Si, KCl ,$C{H}_3$OH ,$C_2{H}_6$

(2) $C{H}_{3}OH$, $C_2{H}_6$, Si ,KCl 

(3) KCl, Si, $C_2{H}_6$, $C{H}_{3}OH$

(4) $C_2{H}_6, C{H}_{3}OH , KCl , Si$

Which of the following is not a perfect nonpolar molecule?

1. $B_3{N}_3{H}_6$                     

2. CCl₄

3. ${\mathrm{SO}}_3$                             

4. All of the above

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

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

(3) Covalent bonds                   (4) coulombic force

Which substance has the highest melting point ? 

(a) CO

(b) $C{O}_2$

(d) $Si{O}_2$

(d) $P_2{O}_5$

The hybridisation of the  central  atom will change when: 

1. $N{H}_3$ combines with $H^{+}$

2. $H_{3}B{O}_{3_{}}$combines with $O{H}^{-}$

3. $N{H}_3$ forms $N{H_2}^{-}$

4. $H_{2}O$combines with $H^{+}$