MCQ
Which of the following is pyrogallol ?
- ✓
- B
- C
- D
✓
Answer
Correct option: A.
a
Pyrogallol is benzene$-1,2,3-triol.$
Pyrogallol is benzene$-1,2,3-triol.$
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
The correct statement($s$) about the following reaction sequence is(are)
→(image)
($A$) $R$ is steam volatile
($B$) $Q$ gives dark violet coloration with $1 \%$ aqueous $FeCl_3$ solution
($C$) $S$ gives yellow precipitate with $2, 4$-dinitrophenylhydrazine
($D$) $S$ gives dark violet coloration with $1 \%$ aqueous $FeCl_3$ solution
Calculate the electrode potential at ${298\,^o}K$ for $Zn|Z{n^{ + + }}$ electrode in which the activity of zinc ions is $ 0.001\,M $ and ${E^o}_{Zn/Z{n^{ + + }}}$ is $-0.74$ volts ............ $\mathrm{V}$
→The major product obtained in the given reaction is
Ethylene di bromide on heating with metallic sodium in ether solution yields
$(A)\xrightarrow[dil.{{H}_{2}}S{{O}_{4}}]{HgS{{O}_{4}}}(B)\xrightarrow{LiAl{{H}_{4}}}\underset{recemic\,mixture}{\mathop{(C)}}\,$
→$\therefore$ reactant $(A)$ is
The compound obtained by heating salicylic acid with phenol in the presence of phosphorus oxychloride is
Hydrolysis of alkyl isocyanide yields:
The ionization potential of sodium is $5.48\, eV.$ The $I.P.$ of potassium is ............. $\mathrm{eV}$
→For reaction $A \to B$, the rate constant $k_1 = A_1 e^{-Ea_{1} /(RT)}$ and for the reaction $X \to Y$ the rate constant $k_2 = A_2 e^{-Ea_2 /(RT)}$ . If $A_1 = 10^{8}, \,\,A_2 = 10^{10}$ and $E_{a_1} = 600\ cal/mol$, $E_{a_2} = 1800\, cal/mol$, then the temperature at which $k_1 = k_2$ is (Given : $R = 2 \,cal/K-mol$)
→Hydrogen bonding is not present in