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

Give scientific reasons:

The disaccharide sucrose gives negative Tollens test while the disaccharide maltose gives a positive Tollens test.

Give scientific reasons:

Hydrolysis of sucrose is called inversion.

Give two evidences for presence of formyl group in glucose.

Draw a neat diagram for the following:

Haworth formula of glucopyranose.

Draw a neat diagram for the following:

Haworth formula of maltose

Answer the following.

Write the IUPAC name of the following amine :

\[\begin{array}{cc}
\ce{CH3 - CH2 - N - CH2 - CH2 - CH3}\\
|\phantom{........}\\
\ce{CH3\phantom{......}}
\end{array}\]

Answer the following.

Write the IUPAC name of the following amine :

\[\begin{array}{cc}\\
\ce{CH3}\phantom{...........}\\
|\phantom{..............}\\
\ce{CH3 - C - CH2 - CH2 - NH2}\\
|\phantom{..............}\\
\ce{CH3\phantom{...........}}
\end{array}\]

Answer the following.

Write the IUPAC name of the following amine :

\[\begin{array}{cc}\\
\ce{CH3 - CH - NH - CH2 - CH3}\\
|\phantom{...............}\\
\ce{CH3\phantom{............}}
\end{array}\]

Answer the following.

Write the IUPAC name of the following amine.

H₂N-(CH₂)₆ - NH₂

Answer the following.

Write the IUPAC name of the following amine.

Answer the following.

Write the IUPAC name of the following amine.

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.