MCQ
Name the hydrocarbon that is a liquid at  $STP$
  • A
    Ethane
  • B
    Propane
  • C
    $n-$ butane
  • $n-$ pentane

Answer

Correct option: D.
$n-$ pentane
d
Lower hydrocarbons which contain up to $4$ carbon atoms are gases at room temperature whereas higher hydrocarbons are liquid at room temperature. Thus $N - P$ entane is liquid at room temperautre.

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

Which of the following compounds is used in antiknock compositions to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe
What is the molarity of ${H_2}S{O_4}$ solution, that has a density $ 1.84\,gm/cc$  at $35\,^oC$ and contains solute $98\%$ by weight ...... $M$
The solubility of $N_2$ in water at  $300\,K$  and  $500\,torr$  partial pressure is $0.01\,g\,L^{- 1}$ .The solubility ( in $g\,L^{ -1}$)at $750\,torr$  partial pressure is
The incorrect statement $(s)$ regarding $\overset{\bullet }{\mathop{C}}\,{{X}_{3}}$ species is
Sodium oxide reacts with water to produce sodium hydroxide. $20.0\, \mathrm{~g}$ of sodium oxide is dissolved in $500\, \mathrm{~mL}$ of water. Neglecting the change in volume, the concentration of the resulting $\mathrm{NaOH}$ solution is $........\times \quad 10^{-1} \quad$ $M.$ (Nearest integer)

[Atomic mass $: \mathrm{Na}=23.0, \mathrm{O}=16.0, \mathrm{H}=1.0]$

Which of the following pairs of elements might form an alloy
 is converted into  by:
At $298\, K$, the standard reduction potentials are $1.51\, V$ for $MnO_4^ - \,|\,M{n^{2 + }}$, $1.36\, V$ for $C{l_2}\,|\,C{l^ - }$, $1.07\, V$ for $B{r_2}\,|\,B{r^ - }$ and $0.54\, V$ for ${I_2}\,|\,{I^ - }$. At $pH\, = 3$ , permanganate is expected to oxidize $\left( {\frac{{RT}}{F} = 0.059\,V} \right)$
Enthalpy change for the reaction,

$4H_{(g)} \rightarrow 2H_{2(g)}$ is $-869.6\ kJ$

The dissociation energy of $H - H$ bond is ............ $\mathrm{kJ}$

But $-1-$ yne and But $-2-$ yne can be distinguished by