Download App

Alcohols, Phenols and Ethers — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryAlcohols, Phenols and Ethers3 Marks
Question
What are alcohol, phenol and ether compounds ?
✓

Answer

$\rightarrow$ Alcohol compounds: An alcohol contains one or more hydroxyl $(OH)$ group $(s)$ directly attached to carbon atom $(s),$ of an aliphatic system. For example, $CH_3OH.$
$\rightarrow$ Phenol compounds: A phenol contains one or more hydroxyl $(OH)$ group $(s)$ directly attached to carbon atom $(s),$ of an aromatic system. For example, $C_6H_5OH$
$\rightarrow$ Alcohol compounds: The substitution of a hydrogen atom in a hydrocarbon by an alkoxy or aryloxy group $(R-O/Ar-O)$ yields another class of compounds known as 'ethers', for example, dimethyl ether $(CH_3OCH_3).$
$\rightarrow$ In short, ether is a compound which is formed by substituting the hydrogen atom of hydroxyl group of an alcohol or phenol by an alkyl or aryl group.

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 Alcohols, Phenols and Ethers→Alcohols, Phenols and Ethers — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Explain abnormal molar Tasses. Also explain association and dissociation of Solute.
→
Define the following terms :
  1. Analgesic
  2. Anionic detergent
  3. Antacid
→
Write down the IUPAC name for the following complex and indicate the oxidation state, electronic configuration and coordination number. Also give stereochemistry and magnetic moment of the complex:
$[Co(NH_3)_5Cl-]Cl_2$
→
Assign reasons for the following:
  1. Phosphorus doped silicon is a semiconductor.
  2. Schottky defect lowers the density of a solid.
  3. Some of the very old glass objects appear slightly milky instead of being transparent.
→
The equilibrium constant of cell reaction :
$Sn^{4+}(.aq) + Al(s) Al^{3+ }\rightarrow + Sn^{2+} (aq)$ is $4.617 x 10^{184},$ at $25 ^\circ C$
$a.$ Calculate the standard emf of the cell. $($Given: $\log 4.617 x 10^{184} = 184.6644)$
$b.$ What will be the $E^\circ $ of the half cell $Al^{3+}/Al,$ if $E^\circ $ of half cell $Sn^{4+}/Sn^{2+} $ is $4+ 0.15 V.$
→
Following data are obtained for the reaction:
$N_2O_5 \rightarrow 2NO_2 + \frac{1}{2}O_2$ 
$t/s$ $0$ $300$ $600$
$[N2O5]/mol L^{–1}$ $1.6 \times 10^{–2}$ $0.8 \times 10^{–2}$ $0.4 \times 10^{–2}$
  1. Show that it follows first order reaction.
  2. Calculate the half-life.
$($Given $\log 2 = 0.3010 \log 4 = 0.6021)$
→
Explain with examples the terms weak and strong electrolytes.
→
Draw figure to show the splitting of d orbitals in an octahedral crystal field.
→
In corundum, oxide ions are arranged in hexagonal close packing and aluminium ions occupy two-third of the octahedral voids. What is the formula of corundum?
→
For the reaction $R\rightarrow P,$ the concentration of a reactant changes from $0.03 M$ to $0.02 M$ in $25$ minutes. Calculate the average rate of reaction using units of time both in minutes and seconds.
→