HSC Science (Computer Science) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Chemistry

Write the number of moles of ethanoyl chloride required for complete acylation of N, N-dimethylaniline.

What is the action of nitrous acid on the following compounds?

Isopropyl amine

Sulfur dioxide reacts with sodium hydroxide solution to form _______.

Write chemical formula of galena.

The number of lone pairs of electrons present in ClF₅:

Draw structure and name the shape of bromine trifluoride.

How are amines classified depending on the functional group? Give one example of each class of amines.

Explain the trend in the following atomic properties of group 16 elements:

Electron gain enthalpy

What are chalcogens?

Discuss industrial method of preparation of sulfur dioxide from zinc sulfide and iron pyrites.

Zinc does NOT show variable valency because of ______.

Name the alloy which is formed from copper and tin.

Explain terms cast iron and wrought iron with their uses?

Which factors relate to the colour of transition metal?

Derive the expression for work done in chemical reaction. Write the relationship between ∆H and ∆U for an isochoric process.

The concept that aims to maximize efficiency and minimize hazardous effect on human health and environment was coined by Paul T. Anastas.

Write chemical reactions for the following conversions:

Ethyl bromide to ethene.

On which electrode the oxidation reaction takes place?

The allylic halide, among the following, is ______.

Write the chemical composition of cryolite.