11th Standard Syllabus & Materials
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TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 10/11/2020
11th Standard Chemistry Hydrocarbons English Medium Free Online Test One Mark Questions 2020 - 2021
Download Tamil Nadu 11th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
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1.
Which of the following is the most reactive towards electrophilic substitution reaction?
2.
Carbon-carbon bond length in benzene is ____________
1.39 A
1.09 A
1.54 A
1.34 A
3.
How many structural isomers are possible for the molecular formula C4H8 which can undergo ozonolysis?
2
4
3
1
4.
CH3 - CH = CH2 + HBr \(\overset { Benzoyl\ peroxide }{ \underset { hv }{ \longrightarrow } } \)Products which of the following is a possible product in the above reaction?
CH3 - CH2 - CH2 - Br
\({ CH }_{ 3 }-\underset { \overset { | }{ Br } }{ CH } -{ CH }_{ 2 }-Br\)
\({ CH }_{ 3 }-\underset { \overset { | }{ { CH }_{ 2 } } }{ CH } -\underset { \overset { | }{ Br{ CH }_{ 2 } } Br }{ CH } -{ CH }_{ 3 }\)
All of these
5.
Torsion strain is the repulsive interaction between ___________
Electron cloud of two bonds
Electron cloud of two \(\sigma \)-bonds
Electron cloud of two \(\pi\)-bonds
Electron cloud of two \(\sigma \)-bonds on adjacent atoms
6.
Which of the following is the most stable cycloalkane?
7.
Total number of conformations possible in cyclohexane is __________
Zero
Infinite
Four
Two
8.
Which of the following conformers for ethylene glycol is most stable?
9.
In an attempt to prepare propane by Wurtz reaction 1 mole of methyl bromide and 1mole of ethyl bromide are treated with sodium. Assuming equal probability for all possible reaction. How many 'g' of propane will be obtained?
44 g
22 g
33 g
14.67 g
10.
In which alkane isomerization will not occur?
C2H6
C4H10
C5H10
C6H14
11.
The angle strain in cyclopentane is ______________
72°
128o
44o
108°
12.
The difference in potential energy between eclipsed and staggered form of ethane is ____________
4 kJ/mol
12.55 kJ/mol
2 kJ/mol
44 kJ/mol
13.
\(\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } -\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } \overset { \left( A \right) }{ \longrightarrow } CH\equiv CH,\) where A is ___________
Zn
Conc H2SO4
alc. KOH
dil H2SO4
14.
Cis – 2 – butene and trans – 2 – butene are __________
conformational isomers
structural isomers
configurational isomers
optical isomers
15.
Major product of the below mentioned reaction is _____________
\({ \left( { CH }_{ 3 } \right) }_{ 2 }C={ CH }_{ 2 }\overset { ICl }{ \longrightarrow } \)
2–chloro –1– iodo – 2 – methyl propane
1–chloro–2–iodo–2–methylpropane
1,2 – dichloro – 2 – methyl propane
1, 2 – diiodo – 2 – methyl propane
16.
Which among the following alkenes on reductive ozonolysis produces only propanone?
2 – Methyl propene
2 – Methyl but – 2 - ene
2, 3 – Dimethyl but – 1 – ene
2, 3 – Dimethyl but – 2 – ene
17.
The compound that will react most readily with gaseous bromine has the formula (NEET)_____________
C3H6
C2H2
C4H10
C2H4
18.
The compounds formed at anode in the electrolysis of an aquous solution of potassium acetate are __________
CH4 and H2
CH4 and CO2
C2H6 and CO2
C2H4 and Cl2
19.
In the following reaction,
The major product obtained is ________
20.
The correct statement regarding the comparison of staggered and eclipsed conformations of ethane is (NEET)______________
the eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain
the staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain
the staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain
the staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has no torsional strain
1.
(d)
2.
(a)
1.39 A
3.
(c)
3
4.
(d)
All of these
5.
(d)
Electron cloud of two \(\sigma \)-bonds on adjacent atoms
6.
(a)
7.
(b)
Infinite
8.
(d)
9.
(d)
14.67 g
10.
(a)
C2H6
11.
(a)
72°
12.
(b)
12.55 kJ/mol
13.
(c)
alc. KOH
14.
(c)
configurational isomers
15.
(a)
2–chloro –1– iodo – 2 – methyl propane
16.
(d)
2, 3 – Dimethyl but – 2 – ene
17.
(a)
C3H6
18.
(c)
C2H6 and CO2
19.
(c)
20.
(b)
the staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
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