HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Important Questions for Chemistry

Write resonance structures of aniline. What is the action of benzene diazonium chloride on ethanol? 

Identify A and B respectively in the following reaction:
\[\ce{tert-butyl alcohol ->[20‰H2SO4][363K] A + H2O ->[HBr][H2O2] B}\]

Write structural formula for pentane-1,4-diol.

Write structural formulae for Cyclohex-2-en-1-ol.

Write chemical reactions to prepare ethanamine from:

Acetonitrile

Write chemical reactions to prepare ethanamine from:

Nitroethane

Write chemical reactions of following reagents on methoxyethane:

dilute H₂SO₄

Convert the following:

Ethyl alcohol into ethyl acetate.

Convert the following:

acetaldehyde to isopropyl alcohol.

Explain metamerism with suitable examples of ethers

Identify the weakest acidic compound amongst the following

(a) p-nitrophenol                 

(b) p-chlorophenol

(c) p-cresol                         

(d) p-raminophenol

Phenelzine is used as an

(a)  analgesic                      

(b) antiseptic

(c) antipyretic

(d) antidepressant

In phenol carbon atom attached to -OH group undergoes -

1. SP³ hybridisation          
2. SP hybridisation
3. SP² hybridisation
4. No hybridisation

How is carbolic acid prepared from the given compounds :

Aniline

Mention ‘two’ physical properties of carbolic acid.

Write chemical test to distinguish between carbolic acid and alcohol.

Draw the structure of aspirin.

What is the action of the following reagents on phenol - Bromine in CS₂ at low temperature.

Write the molecular and structural formula of BHA and BHT.

Define carbolic acid.