Organic Chemistry Some Basic Principles and Techniques Test

Result

Organic Chemistry Some Basic Principles and Techniques Test - 22

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

The indicator which is used to find the strength of caustic soda solution with the help of oxalic acid is:

A
Methyl orange

B
Phenolphthalein

C
Potassium permanganate

D
None of the above

Solution

An indicator is a chemical substance that undergoes a colour change at the endpoint. The endpoint of an acid-base titration can be determined using acid-base indicators. Acid Base indicators are either weak organic acids or weak organic bases. The colour change of an indicator depends on the pH of the medium. The un-ionized form of an indicator has one colour, but its ionized form has a different colour
Phenolphthalein is used to find the strength of caustic soda solution with the help of oxalic acid
Question 2
1 / -0

Which of the following does not belong to homologous series of alkanes?

A
$$C_2H_6$$

B
$$C_3H_4$$

C
$$C_4H_{10}$$

D
$$C_5H_{12}$$

Solution

Alkanes have the general formula $$C_{n}H_{2n+2}$$.

Thus, $$C_{3}H_{4}$$ does not belong to homologous series of alkanes.
Question 3
1 / -0

The functional group in aldehdye is :

A

B

C
$$\overset{CH_3}{\overset{|}{O}-}H$$

D

Solution

The functional group aldehyde is represented by $$-CHO$$. In IUPAC we use -al in the suffix.
Question 4
1 / -0

Which of the following contains alcoholic functional group?

A
$$\displaystyle H-O-H\overset { \overset { H }{ | } }{ \underset { \underset { H }{ | } }{ C } } -H$$

B
$$\displaystyle { CH }_{ 2 }=CH-{ CH }_{ 2 }OH$$

C
$$\displaystyle { CH }_{ 3 }-\overset { \overset { H }{ | } }{ \underset { \underset { { CH }_{ 3 } }{ | } }{ C } } -O-H$$

D
All of the above

Solution

Hydroxy group($$-OH$$) is alcoholic group which is present in all the given compounds.
Question 5
1 / -0

Yellow ammonium sulphide can separate :

A
$$CdS$$ and $${As}_{2}S_{3}$$

B
$${Bi}_{2}{S}_{3}$$ and $$CuS$$

C
$$PbS$$ and $${Bi}_{2}{S}_{3}$$

D
$$HgS$$ and $$PbS$$

Solution

Since $$CdS$$ belongs to IIA group and $${ As }_{ 2 }{ S }_{ 3 }$$ belongs to IIB group, they can be separated with yellow ammonium sulphide as only IIB group sulphides dissolve in yellow ammoium sulphide.
Question 6
1 / -0

The chief source of aromatic compounds is :

A
Fruits

B
Oil of winter green

C
Petroleum

D
Ants

Solution

The hydrocarbons in crude oil are mostly alkanes, cycloalkanes and various aromatic hydrocarbons. Fruits contain fructose and glucose derivatives. Oil of wintergreen is an organic ester with fragrance. Ants have formic acid.
Question 7
1 / -0

Which one of the following is not an alcohol?

A
$$(CH_3)_2CHCH_2CH_2OH$$

B
$$(CH_3)_3C-CH_2OH$$

C
$$(CH_3)_2-CH-OH$$

D
$$CH_3CH_2CH_2CH_2COOH$$

Solution

(D) is the correct answer as the group associated with it is carboxylic acid group.
Question 8
1 / -0

Which of the statements below best describes a functional group?

A
It is the non-polar section of an organic molecule

B
It is a highly reactive group of elements with similar outer shell electron configurations

C
It is an atom or a group of atoms which determines the chemical properties of a compound

D
It is the part of a chelate ligand attracted to the central ion

Solution

Functional groups are specific groups or recognizable group of atoms or bonds within molecules that are responsible for the characteristic chemical reactions of those molecules. These functional group give characteristic properties to the carbon chain to which it is attached, e.g., aldehydic group or carboxylic group.
Question 9
1 / -0

In each of the following, the carbonyl group is present except in :

A
$$\displaystyle HCHO$$

B
$$\displaystyle { CH }_{ 3 }{ COCH }_{ 3 }$$

C
$$\displaystyle { HCH }_{ 2 }OH$$

D
$$\displaystyle { CH }_{ 3 }-\overset { \overset { O }{ \parallel } }{ C } -H$$

Solution

Carbonyl group is $$-C=O$$ group, which present in aldehydes and ketones but not present in alcohols.
Question 10
1 / -0

Which of the following represents the correct IUPAC name of the compound ?
$$\displaystyle { CH }_{ 2 }=CH-{ CH }_{ 2 }Cl$$

A
Allyl chloride

B
1-chloro-3-propene

C
3-chloro-1-propene

D
Vinyl chloride

Solution

Alkene gets priority over the halogen functional group in numbering the carbon chain.
$${ CH }_{ 2 }={ CH-CH }_{ 2 }Cl\\ 1\quad \quad \quad \quad 2\quad \quad \quad 3\\ 3-Chloro-1-propene$$

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Organic Chemistry Some Basic Principles and Techniques Test - 22

Result

Organic Chemistry Some Basic Principles and Techniques Test - 22

Score

-

Rank

-

SHARING IS CARING

Question 1

Methyl orange

Phenolphthalein

Potassium permanganate

None of the above

Solution

Question 2

$$C_2H_6$$

$$C_3H_4$$

$$C_4H_{10}$$

$$C_5H_{12}$$

Solution

Question 3

$$\overset{CH_3}{\overset{|}{O}-}H$$

Solution

Question 4

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

$$\displaystyle { CH }_{ 2 }=CH-{ CH }_{ 2 }OH$$

$$\displaystyle { CH }_{ 3 }-\overset { \overset { H }{ | } }{ \underset { \underset { { CH }_{ 3 } }{ | } }{ C } } -O-H$$

All of the above

Solution

Question 5

$$CdS$$ and $${As}_{2}S_{3}$$

$${Bi}_{2}{S}_{3}$$ and $$CuS$$

$$PbS$$ and $${Bi}_{2}{S}_{3}$$

$$HgS$$ and $$PbS$$

Solution

Question 6

Fruits

Oil of winter green

Petroleum

Ants

Solution

Question 7

$$(CH_3)_2CHCH_2CH_2OH$$

$$(CH_3)_3C-CH_2OH$$

$$(CH_3)_2-CH-OH$$

$$CH_3CH_2CH_2CH_2COOH$$

Solution

Question 8

It is the non-polar section of an organic molecule

It is a highly reactive group of elements with similar outer shell electron configurations

It is an atom or a group of atoms which determines the chemical properties of a compound

It is the part of a chelate ligand attracted to the central ion

Solution

Question 9

$$\displaystyle HCHO$$

$$\displaystyle { CH }_{ 3 }{ COCH }_{ 3 }$$

$$\displaystyle { HCH }_{ 2 }OH$$

$$\displaystyle { CH }_{ 3 }-\overset { \overset { O }{ \parallel } }{ C } -H$$

Solution

Question 10

Allyl chloride

1-chloro-3-propene

3-chloro-1-propene

Vinyl chloride

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.