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11th Chemistry Monthly Test - 2 ( Fundamentals of Organic Chemistry )

MABS Institution

11th Chemistry Monthly Test - 2 ( Fundamentals of Organic Chemistry )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Which of the following compounds will exhibit cis-trans isomerism?

2-Butene
2-Butyne
1-Butene
2-Butanol

The compound which has one isopropyl group is

2,2,3,3 - Tetramethyl pentane
2,2 - Dimethyl pentane
2,2,3 - Trimethyl pentane
2 - Methylpentane

Which one of the following is not identified by Lassaigne's test?

nitrogen
sulphur
halogens
phosphorous

Which method is used to estimate sulphur?

Lassaigne's test
Oxide test
Carius method
Kjedahl's method

Which of the following pair gives curdy white precipitate and yellow precipitate respectivety in their Lassaignes test?

C₂H₅I and C₂H₅Br
C₂H₅NO₂ and C₂H₅NH₂
C₆H₅CI and CH₃l
CH₄ and CH₃OH

The hybridisations of central and terminal carbon atoms in are respectively.

sp and sp
sp² and sp³
sp and sp²
sp² and sp

In an organic compound, phosphorus is estimated as

Mg₂P₂O₇
Mg₃(PO₄)₂
H₃PO₄
P₂O₅

Which alkene would have only primary and tertiary carbon?

Pentane
2-Methylbrutane
2,2-Dimethyl propane
2,3-Dimethylbrutane

Number of structural isomers possible in C₃H₆O are

9
6
5
3

Which one of the following solutions are added to Lassaigne's extract to identify halogens?

Acetic acid + Lead acetate
dil HNO₃ + AgNO₃
Fe(OH)₂ + FeCl₃
Na₂CO₃ + KNO₃

Part - B

Generic 2 - Answer All Question

Write the IUPAC names of the following compounds.
\({ CH }_{ 3 }-{ CH }_{ 2 }-\underset { \overset { | }{ { CH }_{ 3 } } }{ CH } -{ CH }_{ 2 }-{ CH }_{ 3 }\)
(ii)

Explain about dash line structure with a suitable example.

Draw the structure of (i) Mesitylene (ii) 1, 2, 3-trimethyl benzene

What is meant by condensed structure? Explain with an example.

Give example for of each follwing type of organic compounds.
(i) Non-benzeoid
(ii) Aromatic hetrocyclix
(iii) Alicyclic
(iv) Aliphatic open chain

Will CCI₄ give white precipitate of AgCl on heating it with silver nitrate? Give reason for your answer.

Give the principle involved in the estimation of halogen in an organic compound by carius method.

Part - C

Generic 3 - Answer All Question

Write the IUPAC names of the following compounds
(i)

(ii)

(iii)

How will you name the following compounds consisting of more than one functional group using IUPAC nomenclature?
(i) CH₂ (OH) CH (OH) CH₂ (OH)
(ii) HO-CH₂-(CH₂)₃-CH₃-CO-CH₃
(iii) \({ CH }_{ 3 }-\underset { \overset { | }{ OH } }{ C}H -{ CH }_{ 2 }-{ CH }_{ 3 }-COOH\)

Explain the detection of carbon and hydrogen by copper oxide test.

0.16 g of an organic compound was heated in a carius tube and H₂SO₄ acid formed was precipitated with BaCl₂. The mass of BaSO₄ was 0.35g. Find the percentage of sulphur [30.04]

Define the term isomerism and write a short note on its classification.

0.24 g of organic compound containing phosphorous gave 0.66 g of Mg₂P₂O₇ by the usual analysis. Calculate the percentage of phosphorous in the compound.

In an estimation of sulphur by carius method, 0.2175 g of the substance gave 0.5825 g of BaSO₄ calculate the percentage composition of S in the compound.

Part - D

Generic 5 - Answer All Question

Explain about steam distillation (or) How is essential oils are recovered from plants and flowers

Explain the estimation of carbon and hydrogen present in an organic compound.

Explain about lassaigne's test for detection of nitrogen in an organic compound.

Write a note on principle involved in chromatography and explain thin layer chromatography.
How will you estimate phosphorous in an organic compound?

0.26g of an organic compound gave 0.039 g of water and 0.245 g of carbon dioxide on combustion. Calculate the percentage of C & H.

Explain about azeotropic distillation.

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