List of top Chemistry Questions asked in Maharashtra Board Class XII Exam

What are interhalogen compounds? Write the chemical reaction when chlorine reacts with dry slaked lime.

Write the name of the metal nanoparticle used to remove E. coli bacteria from water.

Explain Wolff-Kishner reduction reaction. Write the preparation of propanone by using ethanoyl chloride and dimethyl cadmium.

The spin-only magnetic moment of \( \text{Cr}^{3+} \) cation is ___________.

Write the preparation of (a) diethyl ether and (b) ethyl cyanide from ethyl bromide.
Derive the relationship between molar mass, density of the substance, and unit cell edge length.
Complete the reaction: \[ CH_3CH_2Cl \quad \xrightarrow{\text{AgCN, alc., } \Delta} \quad ? \]
Why are amines basic in nature? Among dimethylamine (pK$_b$ = 3.27) and diethylamine (pK$_b$ = 3.0), which one is more basic?
Magnesium in Dry Ether
Explain the buffer action of the sodium acetate-acetic acid buffer.
Write the name of the reduction product formed when ethyl cyanide is treated with sodium and alcohol.

The pH of a 0.001 M HCl solution is ___________

Write the net cell reaction during discharging of a lead accumulator.
What is a nanomaterial? Write the reaction involved in the sol-gel process during hydrolysis.

Predict the type of cubic lattice of a solid element having edge length of 400 pm and density of 6.25 g/ml. 
(Atomic mass of element = 60)

Cyclohexane into Adipic Acid
Ethanentrile into Ethanal
\([Ni(CN)_4]^{2-}\)
\([NiCl_4]^{2-}\)

Mention the number of unpaired electrons and geometry of the following complexes:

(i) \([NiCl_4]^{2-}\)

(ii) \([Ni(CN)_4]^{2-}\)

Convert the following:

(a) Ethanenitrile into ethanal.

(b) Cyclohexane into adipic acid.

Draw the structure of Peroxymonosulfuric Acid.
Derive the relation between half-life period and rate constant for a first-order reaction.
Write the chemical reaction for the preparation of Polyacrylonitrile.
Define: Nanoscience
Write the Atomic Numbers of Transuranium Elements.