MCQ
Which one of the following has the minimum boiling point
- A$1-$Butene
- B$1-$Butyne
- C$n-$Butane
- ✓Isobutane
✓
Answer
Correct option: D.
Isobutane
d
(d)Among the isomeric alkanes, the normal isomer has a higher boiling point than the branched chain isomer. The greater the branching of the chain, the lower is the boiling point. The $n-$alkane have larger surface area in comparison to branched chain isomer (as the shape approaches that of a sphere in the branched chain isomers). Thus, intermolecular forces are weaker in branched chain isomers, there fore they have lower point in comparision to straight chain isomers.
(d)Among the isomeric alkanes, the normal isomer has a higher boiling point than the branched chain isomer. The greater the branching of the chain, the lower is the boiling point. The $n-$alkane have larger surface area in comparison to branched chain isomer (as the shape approaches that of a sphere in the branched chain isomers). Thus, intermolecular forces are weaker in branched chain isomers, there fore they have lower point in comparision to straight chain isomers.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What is the kinetic energy of an electron in second excited state of $He^+$ ? (Energy of electron in first shell of $H = -13.6\, eV$) :- ............. $\mathrm{eV}$
→A certain mass of an ideal gas absorbs $80\ kJ$ heat and gas is expanded from $2\,L$ to $10\,L$ at constant pressure of $25\,bar$ . What is $\Delta U$ for gas in the process.......$kJ$ ( $1\ bar - L = 100\ J$ )
→The first ionisation potential of $Na, Mg, Al$ and $Si$ are in the order :-
→The labelled $-O^{18}$ will be in
→Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
→Assertion $(A)$ : Experimental reaction of $CH _{3} Cl$ with aniline and anhydrous $AlCl _{3}$ does not give $o$ and $p-methylaniline$.
Reason $(R)$ : The - $NH _{2}$ group of aniline becomes deactivating because of salt formation with anhydrous $AlCl _{3}$ and hence yields $m$-methyl aniline as the product.
In the light of the above statements, choose the most appropriate answer from the options given below.
Which one of the following platinum complexes is used in cancer chemotherapy?
Combustion of glucose $\left(\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6\right)$ produces $\mathrm{CO}_2$ and water. The amount of oxygen (in $\mathrm{g}$ ) required for the complete combustion of $900 \mathrm{~g}$ of glucose is:
→[Molar mass of glucose in $\mathrm{g} \mathrm{mol}^{-1}=180$ ]
Which of the following is more acidic than phenol ?
A covalent bond between two atoms is formed by which of the following
Two homo-diatomic molecules $'X'_2$ and $'Y'_2$ have same bond order then select the CORRECT statement
→