CBSE Class 12 Chemistry Question Paper 2004 Foreign Set 56 3

Content Curator | Updated on - Oct 26, 2026

CBSE Class 12 Chemistry Question Paper 2004 Foreign Set 56 3 is available for download here. CBSE conducted the Class 12 Chemistry exam on March 16, 2004. The question paper PDFs are given below.

CBSE Class 12 Chemistry Question Paper 2004 Foreign Set 56 3 PDF

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CBSE Class 12 Chemistry 2004 Question Paper Details

Exam	CBSE Class 12 Board Examination 2004
Subject	Chemistry
Paper code	56/3 (Foreign)
Exam date	March 16, 2004

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CBSE CLASS XII Questions

1.
Following reaction takes place in one step:

\(2A + B \rightarrow 2C\)

How will the rate of above reaction change if the volume of the reaction vessel is decreased to one third of its original volume? Will there be any change in the order of reaction with the reduced volume?
View Solution
2.
(a) Write two structural differences between DNA and RNA.
(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.
(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?
View Solution
3.
An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it:
(I) does not give Tollen's test but gives a positive iodoform test.
(II) does not give Tollen's test and iodoform test but undergoes Aldol condensation.
(III) undergoes Cannizzaro's reaction.
View Solution
4.
(i) (I) The \(\mathrm{pK_b}\) value of aniline is higher than that of methylamine. Explain why.
(II) Arrange the following compounds in decreasing order of their basic strength in the gaseous phase :
\(\mathrm{NH_3}\), \(\mathrm{(C_2H_5)_2NH}\), \(\mathrm{(C_2H_5)_3N}\), \(\mathrm{C_2H_5NH_2}\)
(III) What is Hinsberg's reagent ? Mention its one use.
(ii) How will you convert the following :
(I) Nitrobenzene to Benzenediazonium chloride ?
(II) Iodomethane to Ethanamine ?
View Solution
5.
(a) Define 'Denatured Protein' with an example.
(b) What happens when glucose reacts with HCN ? Write the reaction involved.
(c) Name the disease caused by the deficiency of Vitamin C.
View Solution
6.
A reaction \( \mathrm{A \rightarrow B} \) follows second order kinetics. How will the rate of reaction be affected if the concentration of (i) A is increased by three times, and (ii) A is reduced to half ?
View Solution

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CBSE Class 12 Chemistry Question Paper 2004 Foreign Set 56 3 PDF

CBSE Class 12 Chemistry 2004 Question Paper Details

CBSE CLASS XII Questions

1.Following reaction takes place in one step:\(2A + B \rightarrow 2C\)How will the rate of above reaction change if the volume of the reaction vessel is decreased to one third of its original volume? Will there be any change in the order of reaction with the reduced volume?

2.(a) Write two structural differences between DNA and RNA.(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

3.An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it: (I) does not give Tollen's test but gives a positive iodoform test. (II) does not give Tollen's test and iodoform test but undergoes Aldol condensation. (III) undergoes Cannizzaro's reaction.

5.(a) Define 'Denatured Protein' with an example.(b) What happens when glucose reacts with HCN ? Write the reaction involved.(c) Name the disease caused by the deficiency of Vitamin C.

6.A reaction \( \mathrm{A \rightarrow B} \) follows second order kinetics. How will the rate of reaction be affected if the concentration of (i) A is increased by three times, and (ii) A is reduced to half ?

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1.
Following reaction takes place in one step:

\(2A + B \rightarrow 2C\)

How will the rate of above reaction change if the volume of the reaction vessel is decreased to one third of its original volume? Will there be any change in the order of reaction with the reduced volume?

2.
(a) Write two structural differences between DNA and RNA.
(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.
(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

3.
An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it:
(I) does not give Tollen's test but gives a positive iodoform test.
(II) does not give Tollen's test and iodoform test but undergoes Aldol condensation.
(III) undergoes Cannizzaro's reaction.

5.
(a) Define 'Denatured Protein' with an example.
(b) What happens when glucose reacts with HCN ? Write the reaction involved.
(c) Name the disease caused by the deficiency of Vitamin C.

6.
A reaction \( \mathrm{A \rightarrow B} \) follows second order kinetics. How will the rate of reaction be affected if the concentration of (i) A is increased by three times, and (ii) A is reduced to half ?