HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Chemistry

Draw the flow chart diagram to show the classification of polymers based on the type of polymerization.

Answer the following in one sentence.

Name some chain-growth polymers.

Answer the following.

Write a reaction to prepare ethanamine from Nitroethane

Answer the following in one sentence.

Define the term: Synthetic fibres

Answer the following.

Write a reaction to prepare ethanamine from Propionamide.

Answer the following in one sentence.

Give one example each of copolymer and homopolymer.

Answer the following.

Write the names of classes of polymers formed according to intermolecular forces and describe briefly their structural characteristics.

Answer the following.

Classify the following polymers as natural and synthetic polymers

1. Cellulose
2. Polystyrene
3. Terylene
4. Starch
5. Protein
6. Silicones
7. Orlon (Polyacrylonitrle)
8. Phenol-formedehyde resins

Answer the following.

What are synthetic resins? Name some natural and synthetic resins.

Answer the following.

Distinguish between thermosetting and thermoplastic resins. Write example of both the classes.

Answer the following

How is polythene manufactured? Give their properties and uses.

Attempt the following:

Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.

\[\begin{array}{cc}\ce{- (CH2 - CH -)_\text{n}}\\
\phantom{.....}|\\\ce{\phantom{.......}CN}\end{array}\]

Attempt the following:

Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.

\[\begin{array}{cc}
\ce{-(CH2 - CH2 - CH - CH2 - CH2)_\text{n}}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\end{array}\]

Attempt the following:

Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.

Answer the following.

Explain in detail free radical mechanism involved during preparation of addition polymer.

Answer the following in one or two sentences.

For the reaction,

\[\ce{CH3Br_{(aq)} + OH^-_{ (aq)} -> CH3OH^-_{ (aq)} + Br^-_{ (aq)}}\], rate law is rate = k`["CH"_3"Br"]["OH"^-]`

What is the change in rate if concentrations of both reactants are doubled?

What are the types of ligands? Give one example of each type.

Amongst the following, the ambidentate ligand is ____________

Write one example of each of bidentate and ambidentate ligand.

The following types of solids contain molecules as constituent particles?