Question 11 Mark
Write the IUPAC name of isobutyl alcohol.
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Question 21 Mark
What is the chemical equation for the conversion of phenol to salicylic acid?
Question 31 Mark
How will you distinguish between alcoholic - OH group and phenolic - OH group?
Answer
View full question & answer→Phenolic -OH group gives blue or violet colour with neutral $FeCl _3$, while the alcoholic - OH group does not.
Question 41 Mark
Arrange the following in the increasing order of their bond angles- $CH _3 OH , CH _3 OCH _3$ and $C _6 H _5 OH$.
Answer
View full question & answer→$CH _3 OH < C _6 H _5 OH < CH _3- O - CH _3$.
Question 51 Mark
What is the order of reactivity of halogen acids with ethers?
Answer
View full question & answer→$HI > HBr > HCl$.
Question 61 Mark
What is the general formula of open chain saturated ethers?
Answer
View full question & answer→$C _n H _{2 n+2} O$.
Question 71 Mark
What is the combustion reaction of ethoxy ethane?
Answer
View full question & answer→$C _2 H _5O$ $C _2 H _5+6 O _2 \longrightarrow 4 CO _2+5 H _2 O$
Question 81 Mark
Complete the following reaction :
Question 91 Mark
Why $C _2 H _5 OH$ is soluble in water but $C _2 H _5 OC _2 H _5$ is not?
Answer
View full question & answer→Due to presence of polarity in $O - H$ bond, $C _2 H _5 OH$ forms a hydrogen bond with water which is responsible for the solubility of $C _2 H _5 OH$ whereas in $C _2 H _5 OC _2 H _5$ hydrogen bonding is not possible.
Question 101 Mark
What is the increasing order of boiling points of ethanol (I), propane (II) and methoxy methane (III).
Answer
View full question & answer→ (II) $<$ (III) $<$ (I)
Question 111 Mark
Write down the order of solubility in water of the following compounds-pentan-l-ol (I), 2-methyl butan-$2- $ol (II) and pentan-2-ol (III).
Answer
View full question & answer→ (II) $>$ (III) $>$ (I)
Question 121 Mark
Write the equation for making anisole and phenetole from phenol.
Question 131 Mark
What is the function of diastase enzyme?
Answer
View full question & answer→The enzyme diastase catalyzes the conversion of starch to maltose.
Question 141 Mark
What is Lucas reagent and its uses?
Answer
View full question & answer→A solution of anhydrous zinc chloride in conc. hydrochloric acid is Lucas reagent. It is used to differentiate primary, secondary and tertiary alcohols.
Question 151 Mark
What is the major alkene obtained from the dehydration of Butan-l-ol?
Answer
View full question & answer→$CH _3- CH = CH - CH _3$, (But-2-ene).
Question 161 Mark
Write chemical equation of acetyl chloride with phenol.
Question 171 Mark
Which alcohol gives blue colour by victor Meyer's test?
Answer
View full question & answer→Secondary alcohol.
Question 181 Mark
An organic compound react with sodium metal and also gives iodoform test and formula of a compound.
Answer
View full question & answer→ $CH _3- CH _2- OH$ (ethyl alcohol).
Question 191 Mark
Name the product formed when benzene is oxidized at $300^{\circ} C$ in presence of $V _2 O _5$.
View full question & answer→Question 201 Mark
What is the reaction of nitrous acid on ethylamine?
Question 211 Mark
What is saponification?
Answer
View full question & answer→The hydrolysis of an ester to form an alcohol and the salt of a carboxylic acid in acidic or essential conditionis called saponification.
Question 221 Mark
Give one example of metamerism in ether.
Question 231 Mark
Name one functional group isomer of $m$-cresol.
View full question & answer→Question 241 Mark
What kind of isomerism exists in Butan-l-ol and 2-methyl propan-l-ol.
Answer
View full question & answer→Chain isomerism.
Question 251 Mark
How many alcoholic structural isomers are possible of molecular formula $C _5 H _{12} O$ ?
Answer
View full question & answer→Eight.
Question 261 Mark
What type of alcohol is sorbitol?
Answer
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Question 271 Mark
Which hybridisation occurs on oxygen in ether?
Answer
View full question & answer→$s p^3$ hybridisation occurs on oxygen.