MCQ
In paraffins, with the increasing molecular weight, it is found that
  • A
    Freezing point decreases
  • B
    Boiling point decreases
  • Boiling point increases
  • D
    Vapour pressure decreases

Answer

Correct option: C.
Boiling point increases
c
(c) Paraffins are non-polar compounds. The intermolecular forces are weak Vander Waal’s forces. As the molecular mass increases Vander Waal’s forces increases. Hence boiling point increases.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

In aldehydes and ketones, carbon of carbonyl group is
When the value of the principal quantum number $n$ is $3$, the permitted values of the azimuthal quantum numbers $l$ and the magnetic quantum numbers $m$ , are $l$$m$

            $l$                       $m$

${\lambda _{ClC{H_2}COONa}} = 224\;oh{m^{ - 1}}\,c{m^2}\,gme{q^{ - 1}}$,

${\lambda _{NaCl}} = 38.2\;oh{m^{ - 1}}\,c{m^2}\,gme{q^{ - 1}}$,

${\lambda _{HCl}} = 203\;oh{m^{ - 1}}\,c{m^2}\,gme{q^{ - 1}}$,

What is the value of ${\lambda _{ClC{H_2}COOH}}$ .............. ${\rm{Oh}}{{\rm{m}}^{ - 1}}{\mkern 1mu} {\rm{c}}{{\rm{m}}^2}{\rm{gm}}\,{\rm{e}}{{\rm{q}}^{ - 1}}$

Given below are two statements :
Statement $(I) : S_N2$ reactions are 'stereospecific', indicating that they result in the formation only one stereo$-$isomers as the product.
Statement $(II) : S_N1$ reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct
answer from the options given below :
$Ph-CH = NO_2H \xrightarrow[{3days}]{{isomerises}}\mathop {(x)}\limits_{(50 - 50\% )}$ , Isomer $(x)$ is
The stable carbocation formed in the above reaction is ......
$Z{n^{2 + }}_{(aq) } + 2e\, \to \,Zn_{(s)}.$ This is
Carbylamine test is used to detect the presence of primary amino group in an organic compound. Which of the following compound is formed when this test is performed with aniline?
What is the oxidation number of iron in the compound $[Fe{({H_2}O)_5}(NO)]S{O_4}$
Product of the reaction is