HSC Science (Computer Science) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions

When KOH solution is added to potassium dichromate solution the colour of solution
changes to yellow, because _______

(A) chromate ion changes to dichromate ion

(B) dichromate ion changes to chromate ion

(C) oxidation number of chromium changes from + 6 to + 4

(D) oxidation number of chromium changes from + 4 to +6

But-1-ene on reaction with HCl in the presence of sodium peroxide yields _______.

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

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

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

IUPAC name of is C₆H₅ − CH₂ − C − CH₂ − CH₂ − CH₂ − CH₃ is _______

(A) 1-Phenylhexan-2-one

(B) 6-Phenylhexan-5-one

(C) 1-Benzylhexan-5-one

(D) Dodecan-5-one

How is phenol converted into the following?

Benzene

How is phenol converted into the following?

Benzene

How is phenol converted into the following?

Benzene

How is phenol converted into the following?

benzoquinone

How is phenol converted into the following?

benzoquinone

How is phenol converted into the following?

benzoquinone

How is phenol converted into the following?

picric acid

How is phenol converted into the following?

picric acid

How is phenol converted into the following?

picric acid

How is nitromethane prepared from the following?

alkyl halide

How is nitromethane prepared from the following?

α-nitroalkene

How are polymers classified on the basis of polymerisation process?

Explain effects of lanthanoid contraction.

What are the consequences of lanthanoid contraction?