Class XII_All India Chemistry_Set-2
General Instructions:
(i)
All questions are compulsory.
(ii)
Questions number 1 to 8 are very short-answer questions and carry 1 mark each.
(iii) Questions number 9 to 18 are short-answer questions and carry 2 marks each.
(iv)
Questions number 19 to 27 are also short-answer questions and carry 3 marks
each.
(v)
Question number 28 to 30 are long-answer questions and carry 5 marks each.
(vi)
Use Log Tables, if necessary. Use of calculators is not allowed.
1.
Write the structure of 2-aminotoluene.
Ans.
Structure of 2-aminotoluene is
2.
Which aerosol depletes ozone layer?
Ans.
Chlorofluorocarbon, CFC (chemical formula CCl2F2) is an aerosol which depletes
ozone layer
3.
Of physisorption or chemisorptions, which has a higher enthalpy of adsorption?
Ans.
Chemisorption has a higher enthalpy of adsorption as compared to physisorption.
4.
Ethanal is soluble in water. Why?
Ans.
Ethanal CH3CHO is soluble in water because they form hydrogen bond with water.
5.
Write the IUPAC name of the following compound:
CH3 — CH — CH 2— CH— CH3
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|
Cl
Br
Ans.
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1
1
1
1
IUPAC name of
1
2
3
4
5
CH 3 — CH — CH 2 — CH — CH 3
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|
Br
Cl
2-Bromo-4-chloropentane
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Class XII_All India Chemistry_Set-2
6.
Name the method used for refining of copper metal.
Ans.
Electrolytic method is used for refining copper metal.
7.
Write the name of linkage joining two amino acids.
Ans.
The linkage which joins the two amino acids is known as peptide linkage.
8.
Give one example of a condensation polymer.
Ans.
One example of a condensation polymer is Nylon 6,6
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1
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