Introduction to Alcohols

Q. Phenol and ethanol are distinguished by the reaction with:

1. Red litmus paper
2. $NaHC{O}_3$
3. Neutral $FeC{l}_3$ solution
4. $Na$

Q. A mixture of ethane and ethene occupies 41L at 1atm and 500K. The mixture completely reacts with 10/3 mole of O2 to produce CO2 and H2O.The mole fractions of ethane and ethene in the mixture are respectively

Q. How will you distinguish between Ethane and Ethene Chemically ? Give Reaction Involved.

Q. Ethyl alcohol on oxidation with acidified $K_{2}C{r}_2{O}_7$ gives

1. $C{H}_{3}COC{H}_3$
2. $HCOOH$
3. $C{H}_{3}COOH$
4. $HCHO$

Q.

Why do esters smell stronger in water?

Q.

Ethane to bromoethane

Q. Which of the following products is obtained when acetaldehyde reacts with C₂H₅MgCl?

1. An aldehyde
2. A ketone
3. A primary alcohol
4. A secondary alcohol

Q.

__________ is an organic compound which is called as “wood spirit”.

Q. At $1990K$ and $1atm$ pressure, there are equal number of $C{l}_2$ molecules and $Cl$ atoms in the reaction mixture. The value of $K_p$ for the reaction $C{l}_{2\left(g\right)}\rightleftharpoons 2C{l}_{\left(g\right)}$ under the above condition is $x\times {10}^{-1}$. The value of $x$ is ______.
(rounded off to the nearest integer)

Q.

Are alcohols flammable?

Q. 0.078g of hydrocarbon occupy 22.4L of volume at 1atm and 0degrees Calcutta calcious Long press to edit & lockthe empirical formula of hydrocarbonis CH. What will be the molecular formula

Q. $1$ mole of a gas $A{B}_3$ present in $10\text{L}$ container dissociates into $A{B}_2\left(g\right)$ and $B_2\left(g\right)$.
$2A{B}_3\left(g\right)\rightleftharpoons 2A{B}_2\left(g\right)+B_2\left(g\right)$
If the degree of dissociation of $A{B}_3$ is $80\%$, then final pressure at $600\text{K}$ is:
(Given $R=0.082{\text{L atm K}}^{-1}{\text{mol}}^{-1}$)

1. $5.88\text{atm}$
2. $1.25\text{atm}$
3. $10.25\text{atm}$
4. $6.88\text{atm}$

Q. Two gases $A$ and $B$ in the molar ratio $1:2$ were admitted to any empty vessel and allowed to reach equilibrium at $400{}^{o}C$ and $8atm$ pressure as $A+2B\rightleftharpoons 2C$. The mole fraction of $C$ at equilibrium is $0.4$. Calculate $K_P\left(at{m}^{-1}\right)$ for the reaction.

Q. 10 ml of hydrocarbon was completely burnt in 80 ml of O2 at ntp.The remaining gaseous mixture occupies 70 ml at Ntp.The volume becomes 50 ml when passed through KOH, what is the formula of hydrocarbon?

Q. Methanol on heating with salicylic acid and a few drops of conc. H2SO4 gives the smell of ( 1 ) Bitter almonds ( 2) Oil of wintergreen (3 ) Rotten eggs (4 ) Mustard oil

Q. Which of the following is the correct product of the given reaction?

1. Propan-2-ol
2. Butan-2-ol
3. Methanol
4. Ethanol

Q. Why is the oxidation of a primary alcohol with a mixture of sodium dichromate and sulphuric acid not a good method for the preparation of corresponding aldehyde?

1. A mixture of sulphuric acid will not oxidized a primary alcohol
2. The product will be an alkyl sulphonate, $R–S{O}_{3}H$ mixture of sodium dichromate and sulphuric acid will not oxidize a primary alcohol
3. The product will be the corresponding ketone
4. Any aldehyde produced will be oxidized further

Q. Convert ethane to isopropyl alcohol.

Q.

how to convert ethanol to methanol

Q. Ketone reacts with Grignard reagent to produce tertiary alcohol via which of the following mechanism?

1. Nucleophilic substitution
2. Nucleophilic addition
3. Electrophilic substitution
4. Electrophilic addition

Q. 16 moles of $H_2$ and 4 moles of $N_2$ are sealed in an one litre vessel. The vessel is heated at a constant temperature until the equilibrium is established, it is found that the pressure in the vessel has fallen to 9/10 th of its original value. Calculate new concentration of $N_2$ and $N{H}_3$ in $mol{L}^{-1}$
$N_2\left(g\right)+3H_2\left(g\right)\rightleftharpoons 2N{H}_3\left(g\right)$

Q. Which of the following calcium salt will give cyclopentanone on heating?

1. Calcium succinate
2. Calcium adipate
3. Calcium glucarate
4. Calcium oxalate

Q. What happens when ethyl bromide reacts with ethanolic potassium hydroxide?

Q. The equilibrium constant $K_p$ of the reaction: $2S{O}_3\left(g\right)\rightleftharpoons 2S{O}_2\left(g\right)+O_2\left(g\right)$ is 900 atm at 800 K. A mixture containing $S{O}_3$ and $O_2$ having initial partial pressure of 1 and 2 atm. respectively is heated at constant volume to equilibriate. Calculate the partial pressure of $O_2$ gas at 800 K.

1. 2.47
2. 4.01
3. 0.97
4. 1.1

Q.

__________ is an organic compound which is called as “wood spirit”.

Q. Carbolic acid is

1. Phenyl benzoate
2. Salol
3. Phenyl acetate
4. Phenol

Q. Which of the following step is not observed in the mechanism of acid catalyzed hydration​ of alkene?

1. Formation of Carbocation​
2. Attack of Electrophile​
3. Attack of Nucleophile​
4. Deprotonation to form an Alcohol​

Q. is alcoholic KOH IS A BULKY BAS

Q. The value of $K_p$ for the reaction,
$2S{O}_2\left(g\right)+O_2\left(g\right)\rightleftharpoons 2S{O}_3\left(g\right)$ is $5$.
What will be the partial pressure of $O_2$ at equilibrium when equal moles of $S{O}_2$ and $S{O}_2$ are present at equilibrium?

1. $0.5$
2. $0.3$
3. $0.2$
4. $0.1$

Q. Which of the following statements are correct?
i) Ordinary ethyl alcohol is known as grain alcohol.
ii) Methylated spirit contains rectified spirit.
iii) Absolute alcohol is 100% ethanol.
iv) Rectified spirit is 100% ethanol.

1. ii, iii, iv
2. ii, iii
3. i, ii, iii
4. All are correct