#### 11th Standard Chemistry Fundamentals of Organic Chemistry English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

11th Standard

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Chemistry

Time : 00:20:00 Hrs
Total Marks : 20

20 x 1 = 20
1. In the hydrocarbo $\overset { 7 }{ { CH }_{ 3 } } -\overset { 6 }{ { CH }_{ 2 } } -\overset { 5 }{ CH } =\overset { 4 }{ CH } -\overset { 3 }{ { CH }_{ 2 } } -\overset { 2 }{ CH } =\overset { 1 }{ CH }$ the state of hybridisation of carbon 1,2,3,4 and 7 are in the following sequence.

(a)

sp, sp, sp3, sp2, sp3

(b)

sp2, sp, sp3, sp2, sp3

(c)

sp, sp, sp2, sp, sp3

(d)

none of these

2. Which one of the following names does not fit a real name?

(a)

3 – Methyl –3–hexanone

(b)

4–Methyl –3– hexanone

(c)

3– Methyl –3– hexanol

(d)

2– Methyl cyclo hexanone

3. IUPAC name of ${ CH }_{ 3 }-\overset { \underset { | }{ H } }{ \underset { \overset { | }{ { C }_{ 2 }{ H }_{ 5 } } }{ C } } -\overset { \underset { | }{ { C }_{ 4 }{ H }_{ 9 } } }{ \underset { \overset { | }{ { CH }_{ 3 } } }{ C } } -{ CH }_{ 3 }$ is

(a)

3, 4, 4 – Trimethylheptane

(b)

2 – Ethyl –3, 3– dimethyl heptane

(c)

3, 4, 4 – Trimethyloctane

(d)

2 – Butyl -2 –methyl – 3 – ethyl-butane

4. The IUPAC name of the compound  is

(a)

3 – Ethyl -2– hexene

(b)

3 – Propyl -3– hexene

(c)

4 – Ethyl – 4 – hexene

(d)

3 – Propyl -2-hexene

5. The IUPAC name of  is

(a)

2 – Bromo -3 – methyl butanoic acid

(b)

2 - methyl - 3- bromobutanoic acid

(c)

3 - Bromo - 2 - methylbutanoic acid

(d)

3 - Bromo - 2, 3 - dimethyl propanoic acid

6. The isomer of ethanol is

(a)

acetaldehyde

(b)

dimethylether

(c)

acetone

(d)

methyl carbinol

7. Tetravalency of carbon is possible in the case of

(a)

sp3-hybridisation

(b)

sp2-hybridisation

(c)

sp-hybridisation

(d)

All of these

8. Which of the following compound has maximum number of primary H-atoms?

(a)

CH4

(b)

CH3-CH2-CH3

(c)

$\underset { \underset { { CH }_{ 3 } }{ | } }{ { H }_{ 5 }{ C }_{ 2 }-{ CH }-{ CH }_{ 3 } }$

(d)

C (CH3)4

9. The compound which has one isopropyl group is

(a)

2,2,3,3 - Tetramethyl pentane

(b)

2,2 - Dimethyl pentane

(c)

2,2,3 - Trimethyl pentane

(d)

2 - Methylpentane

10. Structure of the compound whose IUPAC name is 3-ethyl-2-hydroxy-4-methyl hex-3-en-5-ynoic acid is

(a)

(b)

(c)

(d)

11. Which one of the following pairs represents stereoisomerism?

(a)

Chain isomerism and rotational isomerism.

(b)

Structural isomerism and geometrical isomerism

(c)

(d)

Optical isomerism and geometrical isomerism

12. Purification of two miscible .liqulds possessing very close boiling points can be separated using-

(a)

Fractional distillation

(b)

Sublimation

(c)

Simple distillation

(d)

Steam distillation

13. The principle involved in paper chromatography is

(a)

partition

(b)

sublimation

(c)

(d)

filtration

14. Which of the following is not an organic compound?

(a)

DNA

(b)

Lipid

(c)

Glycogen

(d)

Bronze

15. Which one of the following is the functional group of ketone?

(a)

-CHO

(b)

$-\underset { \overset { || }{ O } }{ C } -$

(c)

-O-

(d)

-OH

16. Which one of the following is commonly called mesitylene?

(a)

(b)

(c)

(d)

17. Which one of the following is called ferric ferrocyanide?

(a)

Na4[Fe(CN)6]

(b)

Na4[Fe(CN)6]3

(c)

Fe4[Fe(CN)6]

(d)

Fe4[Fe(CN)6]3

18. Which one of the following is the formula of sodium nitroprusside?

(a)

Na4[Fe(CN)5NO5

(b)

Na4[Fe(CN)5SON]

(c)

Na4[Fe(CN)6]

(d)

Fe4[Fe(CN)6]3

19. Which of the following will absorb CO2?

(a)

Cone. H2SO4

(b)

KOH

(c)

HCl

(d)

Copper

20. Which method is used to estimate sulphur?

(a)

Lassaigne's test

(b)

Oxide test

(c)

Carius method

(d)

Kjedahl's method