Chemistry:2013:CBSE:[ All India]:Set-II
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Q1
Of physisorption or chemisorption, which has a higher enthalpy of adsorption?
Marks:1View AnswerAnswer:
Chemisorption has a higher enthalpy of adsorption.
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Q2
Name the method used for the refining of copper metal.
Marks:1View AnswerAnswer:
Electrolytic refining is used for the refining of copper metal.
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Q3
Write the structure of 2-aminotoluene.
Marks:1View AnswerAnswer:
The structure of 2-aminotoluene is as follows:
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Q4
Which aerosol depletes the ozone layer?
Marks:1View AnswerAnswer:
Chlorofluoro compounds (freons), which are used as propellants in aerosols, deplete the ozone layer.
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Q5
Ethanal is soluble in water. Why?
Marks:1View AnswerAnswer:
The solubility of ethanal in water is due to the formation of the hydrogen bonds between the polar carbonyl group and the water molecules.
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Q6
Write the IUPAC name of the following compound:
Marks:1View AnswerAnswer:
The IUPAC name of the given compound is:
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Q7
Write the name of the linkage joining the two amino acids.
Marks:1View AnswerAnswer:
The two amino acid units are connected by the peptide bonds or the peptide linkage.
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Q8
Give one example of a condensation polymer.
Marks:1View AnswerAnswer:
Nylon-6,6 is an condensation polymer, which is formed by the condensation polymerisation of the adipic acid and the hexamethylenediamine.
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Q9
Aluminium crystallises in an fcc structure. The atomic radius of the metal is 125 pm. What is the length of the side of the unit cell of the metal?
Marks:2View AnswerAnswer:
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Q10
The standard electrode potential (E°) for the Daniell cell is + 1.1 V. Calculate the
G° for the reaction
(1 F = 96500Cmol–1)Marks:2View AnswerAnswer:
