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

Answer the following

Define the following term: Nanotechnology

Answer the following

Define the following term: Nanomaterial

Define the Nanochemistry.

Write the reaction involved in the formation of bakelite.

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Which nanomaterial is used in sunscreen lotion? Write its use.

Attempt the following:

What is meant by LDP and HDP? Mention the basic difference between the same with suitable examples.

Write preparation, properties, and uses of Teflon.

Answer the following.

Is synthetic rubber better than natural rubber? If so, in what respect?

Answer the following.

Write main specialities of Buna-S, Neoprene rubber?

Write the structure of isoprene and the polymer obtained from it.

Explain optical isomerism in 2-chlorobutane.

For the isomeric dihalobenzenes, melting point of __________

Optical activity of a molecule is associated with _______________

Write the relationship between radius of atom and edge length of fcc unit cell.

Explain optical activity of 2-chlorobutane.

Give the percentage of empty space in bcc lattice.

If the total volume of a simple cubic unit cell is 6.817 × 10^-23 cm³, what is the volume occupied by particles in the unit cell?

Find the number of atoms in the fcc unit cell.

Calculate the number of unit cells in 0.3 g of a species having density of 8.5 g/cm³ and unit cell edge length 3.25 × 10^-8 cm.

Derive the relationship between density of substance, its molar mass, and the unit cell edge length. Explain how you will calculate the number of particles, and a number of unit cells in x g of metal.