HSC Science (Computer Science) इयत्ता १२ वी - Maharashtra State Board Important Questions

Arrange the following in decreasing order of acid strength.

CH₃OH, CH₃–CH₂–OH, CH₃–CH(OH)–CH₃, (CH₃)₃–C–OH

Write the reaction involved in the preparation of phenol from benzene sulphonic acid.

Compound ‘A’ with molecular formula C₆H₅Cl is fused with NaOH at high temperature under pressure to give compound ‘B’. Compound ‘B’ on treatment with dil.HCl gives compound C having characteristic carbolic odour. Write the chemical equations in support of this. Name the process and give uses of compound C.

Write a chemical reaction for the following conversion:

Acetic acid into ethyl alcohol.

What is metamerism? 

How is phenol converted into the following?

benzoquinone

Write a chemical reaction for the following conversion:

Acetic acid into ethyl alcohol.

What is metamerism? 

What is the action of bromine water on carbolic acid?

How carbolic acid is prepared from benzene sulphonic acid ?

How is phenol prepared from cumene?

How is phenol converted into the following?

benzoquinone

Write a chemical reaction for the following conversion:

Acetic acid into ethyl alcohol.

What is metamerism? 

How is phenol converted into the following?

benzoquinone

How will you obtain the following? (Give balanced equation.)

Ethyl chloride from diethyl ether.

Write a chemical reaction for the following conversion:

Acetic acid into ethyl alcohol.

Write chemical equation for the following:
Gatterman - Koch formylation

Write chemical equation for the following :
Rosenmund reduction

Correct order of acid strength for

1. acetic acid
2. fluoroacetic acid
3. 4-Nitrobenzoic acid 
4. 4-Methyl benzoic acid is ______.