11th Standard Syllabus & Materials
11th Standard
Tamilnadu 11th Standard Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil கேடில் விழுச்செல்வம் - உரைநடை - தமிழகக் கல்வி வரலாறு Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set B
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set B

Published on: 13/05/2022
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Questions + Answers key
Take MCQ Chemistry Test1.
Write the IUPAC names of the following compounds.
(i) (CCI3)3 CCl
(ii) (CH3)3 CCH = C(CI) C6H4I- p
2.
Write a note on carbylamine reaction.
3.
How does benzene diazonium chloride react with HBF4?
4.
How does the haloalkanes react with metals?
5.
Write a short note on \(\beta\)-elimination reaction.
1.
(i) (CCI3)3 CCl
2-(trichloromethyl)- 1,1,1,2,3,3,3-hepta chloropropane
(ii) (CH3)3 CCH = C(CI) C6H4I- p

1-Chloro -1-(4-iodophenyl)-3,3-dimethylbut-l-ene.
2.
Carbylamine reaction:
Chloroform reacts with aliphatic or aromatic primary amine and alcoholic caustic potash, to give foul smelling alkyl isocyanide (carbylamines).

This reaction is used to test primary amine.
3.
Fluoro benzene is prepared by treating benzene diazonium chloride with fluoro boric acid. This reaction produces diazoriium fluoroborate which on heating produces fluorobenzene. This reaction is called Balz - Schiemann reaction.
\(\underset { Benzene\ diazonium \ chloride }{ { C }_{ 6 }{ H }_{ 5 }{ N }_{ 2 }Cl } +HB{ F }_{ 4 }\overset { \longrightarrow }{ -HCl } { C }_{ 6 }{ H }_{ 5 }{ N }_{ 2 }BF\overset { \longrightarrow }{ heat } \underset { Fluorobenzene }{ { C }_{ 6 }{ H }_{ 5 }F+{ BF }_{ 3 }+{ N }_{ 2 } } \)
4.
Haloalkane reacts with active metals like sodium, lead etc in the presence of dry ether to form organo metallic compounds.
\(\underset { Ethylbromide }{ { CH }_{ 2 }{ CH }_{ 2 }Br+2Li } \overset { Dryether }{ \longrightarrow } \underset { Ethyl\quad Lithium }{ { CH }_{ 2 }Li+LiBr } \)
\(\underset { Ethyl\quad bromide }{ 4C{ H }_{ 3 }{ CH }_{ 2 }Br } +\underset { Sodium-lead\quad alloy }{ 4Na/pb } \longrightarrow \underset { Tetra\quad ethyl\quad lead(TEL) }{ ({ CH }_{ 3 }{ CH }_{ 2 })4pb+4NaBr+3pb } \)
5.
When a haloalkene containing a hydrogen on \(\beta\) carbon is treated with an ethanolic solution of potassium hydroxide, an alkene is formed. In this reaction a double bond between and \(\beta\) carbon is formed by releasing a halogen attached to a carbon and a hydrogen to a carbon of halo alkane, is reaction is called elimination reaction. (dehydrohalogenation).
CH3 CH2 Br + KOH \(\overset { ethanol }{ \longrightarrow } \)CH2 = CH2 + KBr + H2O
11th Standard Syllabus & Materials
11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set B
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set B
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