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

Write the name of the catalyst used for preparation of high density polythene polymer.

Monomer used for preparation of polyacrylonitrile is _____________

Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________

Monomer of natural rubber is __________

Write a chemical reaction for the preparation of the following polymer.

polyacrylonitrile

write the structure of the monomer used in natural rubber.

Write preparation of low density polythene.

Mention two uses of LDP.

Write chemical reaction for preparation of the following.

Buna-S

Write chemical reaction for preparation of the following.

Neoprene

Write the name of one example of each polymer in which following repeating units.

\[\begin{array}{cc}
\ce{(-CF2-CF2-), -[NH-(CH2)5-CO] -, -(CH2-CH-), (-CH2-CH2-)}\\
\phantom{............................}|\\
\phantom{..............................}\ce{CN}
\end{array}\]

Write the name and formulae of the monomers used for the preparation of dacron.

Write chemical reactions for the preparation of high-density polythene.

Write two uses and two properties of polythene.

Explain vulcanization of rubber.

Define rubber.

Explain the reactions involved in the preparation of viscose rayon.

Bottom ash of thermal power stations can be used as raw material for cement and brick industry. This example illustrates which of the following principle of green chemistry?

According to less hazardous chemical synthesis point of view, instead of harmful DDT now a days _______ is used as insecticides.

Catalyst used for hydrogenation of oil is ___________