HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Important Questions

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.

When phenol is heated with conc. HNO₃ in presence of conc. H₂SO₄ it yields _______.

(A) o-nitrophenol

(B) p-nitrophenol

(C) 2,4,6-trinitrophenol

(D) m-nitrophenol

Ethylidene dichloride when boiled with aqueous solution of NaOH yields _______.

(A) formaldehyde

(B) acetaldehyde

(C) acetone

(D) ethyl methyl ketone

Natalite is a mixture of

(a) diethyl ether and methanol

(b) diethyl ether and ethanol

(c) dimethyl ether and methanol

(d) dimethyl ether and ethanol

Which of the following compounds is NOT prepared by the action of alcoholic NI₃ on alkyl halide?

(a) CH₃NH₂

(b) CH₃- CH₂- NH₂

(c) CH₃ - CH₂ - CH₂ - NH₂

(d) (CH₃)₃ C- NH₂

Write the structure and IUPAC name of 'methyl-n-propyl ether'.

What is the action of hot HI on it?

3-Methylbutane-2-ol on heating with HI gives ______

How is phenol converted into the following?

picric acid

Write 'two' uses of phenol.

What happens when glucose is treated with Bromine water

What happens when glucose is treated with - Dilute nitric acid