Download App

STD 12 - 7. Alcohol, phenol and ethers — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 7. Alcohol, phenol and ethers4 Marks
MCQ
Given below are two statements.

Statement $I :$ Phenols are weakly acidic.

Statement $II :$ Therefore they are freely soluble in $NaOH$ solution and are weaker acids than alcohols and water.

Choose the most appropriate option

  • A
    Both Statement $I$ and Statement $II$ are correct.
  • B
    Both Statement $I$ and Statement $II$ are incorrect.
  • ✓
    Statement $I$ is correct but Statement $II$ is incorrect.
  • D
    Statement $I$ is incorrect but Statement $I I$ is correct.
✓

Answer

Correct option: C.
Statement $I$ is correct but Statement $II$ is incorrect.
c
Phenol are weakly acidic. Phenol is more acidic than alcohol and $H _{2} O$ statement $(I)$ is correct. $(II)$ is incorrect.

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

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

How many secondary carbon atoms does methyl cyclopropane have ?
→
The standard free energy change $\left(\Delta G ^{\circ}\right)$ for $50 \%$ dissociation of $N _{2} O _{4}$ into $NO _{2}$ at $27^{\circ} C$ and $1\, atm$ pressure is $- x\, J \,mol ^{-1}$. The value of $x$ is $......$ (Nearest Integer)

[Given $: R =8.31 \,J \,K ^{-1} \,mol ^{-1}, \log 1.33=0.1239$ $\ln 10=2.3]$

→
Sulphuric acid reacts with $PC{l_5}$ to give
→
Two solutions $A$ and $B$, each of $100\; L$ was made by dissolving $4 \;\mathrm{g}$ of $\mathrm{NaOH}$ and $9.8 \;\mathrm{g}$ of $\mathrm{H}_{2} \mathrm{SO}_{4}$ in water, respectively. The $\mathrm{pH}$ of the resultant solution obtained from mixing $40\; \mathrm{L}$ of solution $A$ and $10\; \mathrm{L}$ of solution $\mathrm{B}$ is
→
જ્યારે $C{H_2} = CH - COOH$ is reduced with $LiAl{H_4}$, the compound obtained will be
→
The specific conductance of a $0.1\,\,N \,KCl$ solution at ${23\,^o}C$ is $0.012\,\,oh{m^{ - 1\,}}\,c{m^{ - 1}}$. The resistance of cell containing the solution at the same temperature was found to be $55\,ohm$. The cell constant will be .............. $\mathrm{cm}^{-1}$
→
Given

$\left( i \right)\,2F{e_2}{O_3}\left( s \right) \to 4Fe\left( s \right) + 3{O_2}\left( g \right)$

         ${\Delta _r}{G^o} =  + 1487.0\,kJ\,mo{l^{ - 1}}$

$\left( {ii} \right)\,2CO\left( g \right) + {O_2}(g) \to 2C{O_2}\left( g \right)$

        ${\Delta _r}{G^o} =  - 514.4\,kJ\,mo{l^{ - 1}}$

Free energy change, $\Delta_rG^o$  for the reaction

$\,2F{e_2}{O_3}\left( s \right) + 6CO\left( g \right) \to 4Fe\left( s \right) + 6C{O_2}\left( g \right)$ will be .....$kJ\, mol^{-1}$

→
In esterification, $O{H^ - }$ ion for making ${H_2}O$ comes from
→
During the nuclear explosion, one of the products is $^{90}  \mathrm{Sr}$ with half life of $6.93$ years. if $1 \;\mu g$ of $^{90} \mathrm{Sr}$ was absorbed in the bones of a newly born baby in place of $Ca$, how much time, in years, is required to reduce it by $90 \%$ if it is not lost metabolically
→
Most reactive toward acid catalyst dehydration is
→