Question 1

Alcohols of low molecular weight are:

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

soluble in water
soluble in water on heating
insoluble in water
insoluble in all solvents.

Answer

Correct Option: A

Question 2

Which of the following statements is not correctly showing the trend of the properties mentioned ?

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

$CH _3CH _2OH > CH _3CH _2CH _2OH > \underset {(Solubility)}{CH _3CH _2CH _2CH _2OH}$
$CH _3CH _2OH > CH _3CH _2CH _2OH > \underset {(Boiling point)}{CH _3CH _2CH _2CH _2OH}$
$CH _3CH _2CH _2OH > CH _3{\underset{CH _3}{\underset{|}{CH}}}-CH _2OH >\underset{Boiling \, point}{CH _3-\underset{CH _3}{\underset{|}{\overset{CH _3}{\overset{|}C}}}-OH}$
$CH _3-{\underset{CH _3}{\underset{|}{\overset{CH _3}{\overset{|}{C}}}}}-OH$<$CH _3{\underset{CH _3}{\underset{|}{CH}}}-CH _2OH$ <$CH _3CH _2CH _CH _2OH$

Answer

Correct Option: D

Question 3

Which of the following is not a characteristic of alcohol ?

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

They are lighter than water.
Their boiling points rise fairly uniformly with rising molecular weight.
Lower members are insoluble in water and organic solvents but the solubility regularly increases with molecular mass.
Lower members have a pleasant smell and burning taste, higher members are colourless and tasteless.
Higher members have a pleasant smell and burning taste, lower members are colourless and tasteless.

Answer

Correct Option: C

Question 4

Unlike phenol, 2,4-dinitrophenol is soluble in sodium carbonate solution in water because ?

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

presence of two - $NO _2$ groups in the ring makes 2 , 4 - dinitrophenol a stronger acid than phenol.
presence of two - $NO _2$ groups in the ring makes 2 , 4 - dinitrophenol a weaker acid than phenol.
presence of two $-NO _2$ groups make the hydrogen bonding easier, making 2 , 4-dinitrophenol soluble.
nitro group reacts with $Na _2CO _3$ while -$OH$ group does not.

Answer

Correct Option: A

Question 5

The compound which gets dissolved in water is :

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

$C _{2}H _{6}$
$C _{2}H _{4}$
$C _{2}H _{2}$
$C _{2}H _{5}OH$
$C _{3}H _{8}$

Answer

Correct Option: D

Question 6

Which of the following cannot be dissolved in alcohol?

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

Dyes and drugs
Soaps and varnishes
Resins and varnishes
Rubber and plastics

Answer

Correct Option: D

Question 7

Which of the following has a higher boiling point?

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

Butanol
Butanal
Both of them have similar boiling point
Cannot say anything

Answer

Correct Option: A

Question 8

Solubility of alcohols in water is _______ to that of hydrocarbons of comparable molecular masses.

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

greater than
similar
lesser than
none of these

Answer

Correct Option: A

Question 9

Alcohols containing only up to ________________ carbon atoms are completely miscible with water.

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

10
3
8
14

Answer

Correct Option: B

Question 10

Melting point of phenol is :

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

$53^0C$
$43^0C$
$33^0C$
$23^0C$

Answer

Correct Option: B

Question 11

Which of the following is not true regarding phenol?

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

Pure phenol is a white crystalline solid
Phenol smell as disinfectant.
It causes immediate white blistering to the skin
None of these

Answer

Correct Option: D

Question 12

Molecular weight of phenol is :

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

$94.11$
$104.11$
$86.11$
$98$

Answer

Correct Option: A

Question 13

The major product of Raschig process was taken for litmus test.It was observed that it turned:

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

red litmus blue
blue litmus red
no change in colour
very slight change in colour from red towards blue

Answer

Correct Option: B

Question 14

Phenol is a:

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

volatile liquid
non-volatile liquid
volatile solid
non-volatile solid

Answer

Correct Option: C

Question 15

Alcohols containing only up to ___________ carbon atoms are completely miscible with water.

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

three
four
five
two

Answer

Correct Option: A

Question 16

In which of the following solvents, KI has highest solubility? The dielectric constant $(\epsilon)$ of each liquid is given in parentheses.

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

$ C _{6}H _{6}(\epsilon =0)$
$(CH _{3}) _{2}CO(\epsilon =21)$
$CH _{3}OH(\epsilon =32)$
$CCl _{4}(\epsilon =0)$

Answer

Correct Option: C

Question 17

Phenol is an organic compound even though it is soluble in water due to the presence of:

chemistry hydroxy compounds and ethers physical properties of phenol physical properties of alcohols and phenols organic compounds with functional group containing oxygen (part-1)

ionic bonding
covalent bonding
hydrogen bonding
coordinate bonding

Answer

Correct Option: C

Description: physical properties of phenol
Number of Questions: 19
Created by: Rachana Sahu
Tags: alcohols, phenols and ethers organic compounds with functional group containing oxygen (part-1) hydroxy compounds and ethers chemistry organic compounds containing c, h and o

Physical properties of phenol - class-XII

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