HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

Classify the following drugs into Analgesics and Antibiotics 

(1) Ofloxacin

(2) Morphine

(3) Ampicillin

(4) Chloramphenicol

Identify 'A' and 'B' and rewrite the reactions

Identify 'A' and 'B' and rewrite the reactions

Which mixture is used for respiration by deep sea divers?

(A) He + O₂

(B) Ne + O₂

(C) Ar + O₂

(D) Kr + O₂

Describe ‘froth floatation process’ for concentration of sulphide ore.

How does solubility of a gas in water varies with the temperature?

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

The Zieglar-Natta catalyst is used in the preparation of _______.

(A) LDPE

(B) PHBV

(C) PAN

(D) HDPE

How is phenol converted into the following?

Benzene

How is phenol converted into the following?

benzoquinone

How is phenol converted into the following?

picric acid

Explain the mechanism of action of hydroiodic acid on 3-methylbutan-2-ol.

Mention 'two' uses of propan-2-one.

Write the structure of melamine.

Explain the structure of carbonyl functional group

Write mathematical expression of molar conductivity of the given solution at infinite dilution.

Write the different oxidation states of manganese.

Write the IUPAC name of the following coordination compound:

K₃[Fe(CN)₆]

Write the IUPAC names of the following coordination compounds: 

[CoBr₂(en)₂]⁺, (en = ethylenediamine)

What is the action of Excess of chlorine on ammonia?