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

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Chemistry
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What is the action of the following reagent on toluene?

Acetyl chloride in presence of anhydrous AlCl3.

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Answer in one sentence.

Write the order of the basicity of aliphatic alkylamine in the gaseous phase.

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

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Answer in one sentence.

Why are primary aliphatic amines stronger bases than ammonia?

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

Write reaction showing conversion of p-bromoisopropylbenzene into p-isopropylbenzoic acid (3 steps).

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Answer in one sentence.

Arrange the following amines in increasing order of boiling points.

n-propylamine, ethylmethyl amine, trimethylamine.

[13.01] Amines
Chapter: [13.01] Amines
Concept: undefined >> undefined

Answer in one sentence.

Arrange the following amines in the increasing order of their pKb values.

Aniline, Cyclohexylamine, 4-Nitroaniline

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

Explain the basic nature of amines with a suitable example.

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

Choose the correct option from the given alternatives.

Which of the following is made up of polyamides?

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following in one sentence.

Identify 'A' in the following reaction:

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following in one sentence.

Identify 'B' in the following reaction:

\[\ce{H2N -(CH2)6 - NH2 + HOOC - (CH2)4 - COOH ->[N2][533 K]}\]'B'

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following in one sentence.

Define the term: Vulcanization

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following in one sentence.

What type of intermolecular force leads to high-density polymer?

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following in one sentence.

Identify thermoplastic and thermosetting plastic from the following:

  1. PET
  2. Urea formaldehyde resin
  3. Polythene
  4. Phenol formaldehyde resin
[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following.

Write the reaction of the formation of Nylon 6.

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following.

Write the reaction of the formation of Terylene.

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following.

Write structure of natural rubber and neoprene rubber along with the name and structure of their monomers.

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following.

Name the polymer type in which following linkage is present.

\[\begin{array}{cc}\ce{- C - O -}\\||\phantom{.....}\\
\ce{O\phantom{.....}}\end{array}\]

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following.

Match the following pairs:

Name of polymer Monomer
1. Teflon a. CH2 = CH2
2. PVC b. CF2 = CF2
3. Polyester c. CH2 = CHCl
4. Polythene d. C6H5OH and HCHO
5. Bakelite e. Dicarboxylic acid and polyhydoxyglycol
[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Draw the structures of polymers formed from the following monomers

\[\ce{n HOOC–R–COOH + n HO–R'–OH}\]

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined

Answer the following.

Draw the structures of polymers formed from the following monomers

H2N–(CH2)5 – COOH

[15] Polymers
Chapter: [15] Polymers
Concept: undefined >> undefined
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