Science (English Medium) Class 11 - CBSE Question Bank Solutions for Chemistry

Chemistry

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Match the reactions given in Column I with the reaction types in Column II.

Column I	Column II
(i) \[\ce{CH2 = CH2 + H2O ->[H+] CH3CH2OH}\]	(a) Hydrogenation
(i) \[\ce{CH2 = CH2 + H2 ->[Pd] CH3 - CH3}\]	(b) Halogenation
(i) \[\ce{CH2 = CH2 + Cl2 -> Cl - CH2 - CH2 - Cl}\]	(c) Polymerisation
(i) \[\ce{3CH ≡ CH ->[Cu tube][Heat] C6H6}\]	(d) Hydration
	(e) Condensation

[9] Hydrocarbons

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Chapter: [9] Hydrocarbons
Concept: undefined >> undefined

The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?

[14] Environmental Chemistry

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Chapter: [14] Environmental Chemistry
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An alkene ‘A’ contains three \[\ce{C - C}\], eight \[\ce{C - H}\] σ bonds and one \[\ce{C - C}\] π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.

[9] Hydrocarbons

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Chapter: [9] Hydrocarbons
Concept: undefined >> undefined

An alkene ‘A’ contains three C–C, eight C–H σ bonds and one C–C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.

[9] Hydrocarbons

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Chapter: [9] Hydrocarbons
Concept: undefined >> undefined

An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.

[9] Hydrocarbons

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Chapter: [9] Hydrocarbons
Concept: undefined >> undefined

An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.

[9] Hydrocarbons

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Chapter: [9] Hydrocarbons
Concept: undefined >> undefined

What do you mean by significant figures?