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

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

Answer the following

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.

Answer in brief.

Write formulae of the following complex.

Dicyanoaurate (I) ion

Explain optical isomerism in 2-chlorobutane.

The IUPAC name of Na₃[AlF₆] is _____________

Write the IUPAC name of [Fe(CN)₆]^4– ion.

Write the IUPAC name of [Ni(CN)₄]^2–.

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.