Download App

Hydrocarbons — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrocarbons3 Marks
Question
For the following compound, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated:
$\mathrm{C}_4 \mathrm{H}_8$ (one double bond).
✓

Answer

$\text{H}_2\stackrel{1}{\hbox{C}}=\stackrel{2}{\hbox{C}}\text{H}-\stackrel{3}{\hbox{C}}\text{H}_2-\stackrel{4}{\hbox{C}}\text{H}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{(I)}$
$\stackrel{1}{\hbox{C}}\text{H}_3-\stackrel{2}{\hbox{C}}\text{H}=\stackrel{3}{\hbox{C}}\text{H}-\stackrel{4}{\hbox{C}}\text{H}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{(II)}$
$\stackrel{1}{\hbox{C}}\text{H}_2=\stackrel{2}{\hbox{C}}-\stackrel{3}{\hbox{C}}\text{H}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\\\ \ \ \ \ \ \ \ \ \ \ \text{(III)}$
The IUPAC name of
Compound (I) is But-1-ene.
Compound (II) is But-2-ene.
Compound (III) is 2-Methylprop-1-ene.

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

Explore more

More "3 Marks Question" from Hydrocarbons→Hydrocarbons — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

On the basis of Le Chatelier principle explain how temperature and pressure can be adjusted to increase the yield of ammonia in the following reaction.
$\text{N}_2\text{(g)}+\text{3H}_2\text{(g)}\rightleftharpoons\text{2NH}_3\text{(g)} \ \ \ \ \ \ \ \Delta\text{H}= – 92.38\text{kJ mol}^{–1}$
What will be the effect of addition of argon to the above reaction mixture at constant volume?
→
What is hybrid state of each carbon in:
  1. $\text{CH}_2=\text{C}=\text{CH}_2$
  2. $\ \ \ \ \ \ \ {\text{O}}\\\ \ \ \ \ \ \ \ \|\\\text{H}-\text{C}-\text{H}?$
→
How can domestic waste be used as manure?
→
An ionic hydride of groups has sufficiently covalent character. It is used to form hydrides of other elements of group 13 which are useful reducing agent. Write the formula this hydride and its reaction with $\mathrm{B}_2 \mathrm{H}_6$ and $\mathrm{AlCl}_3$.
→
  1. Give the relationship between $\text{K}_\text{a}$, c and $('\alpha')$ where '$\text{K}_\text{a}$' is acid dissociation constant, 'c’ is molar concentration, $'\alpha'$ is degree of dissociation.
  2. If the solubility of $\mathrm{Ca}\left(\mathrm{lO}_3\right)_2$ in water at $18^{\circ} \mathrm{C}$ is $2.1 \mathrm{~g} /$ litre. Calculate the value of solubility product.
[Molecular mass of $\left.\mathrm{Ca}\left(\mathrm{lO}_3\right)_2=390\right]$
→
Calculate
  1. Dissociation constant of conjugate base of HF, $K_a = 6.8 \times 10^{-4}$.
  2. Dissociation constant of conjugate acid of $\text{CO}^{2-}_3,\text{K}_{\text{b}}=2.1\times10^{-4}$
→

In which of the following compounds the C-Cl bond ionisation shall give most stable carbocation?
  1. $\text{CH}_3-\text{CH}-\text{Cl}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\\ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3$
  2. $\ \ \ \ \ \ \ \ \ \ \ \ \text{Cl}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\text{CH}_3-\text{C}-\text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\ \ \ \ \ \ \ \ \ \ \ \text{CH}_3$
  3.  
  1. $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ {\text{H}}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\text{O}_2\text{NH}_2\text{C}-\text{C}-\text{Cl}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{H}$
→
Explain why $\mathrm{BeH}_2$ molecule has a zero dipole moment although the Be–H bonds are polar.
→
  1. State first law of thermodynamics.
  2. Heat (q) and work function (w) individually are not state functions but their sum is always a state function. Why?
  3. Define extensive property with example.
→
Calculate the wavelength of the spectral line obtained in the spectrum of $Li^{2+}$ ion when the transition takes place between two levels whose sum is 4 and the difference is 2.
→