Chemistry in Everyday Life Test

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Chemistry in Everyday Life Test - 33

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Weekly Quiz Competition

Question 1
1 / -0

________ is the additive used in transparent soaps.

A
Potassium bicarbonate

B
Stearic acid

C
Salicyclic acid

D
Glycerine

Solution

Glycerine is the additive used in transparent soaps.
Glycerin, also known as glycerol, is a thick, transparent and non-toxic liquid that is commonly found in soaps.
Glycerin is a natural by-product of the saponification process. When oil reacts with alkaline, it forms soap and glycerol.
Option $$D$$ is correct.
Question 2
1 / -0

The soap can be hardened by :

A
adding sodium carbonate or sodium silicate during its manufacture

B
adding sodium chloride

C
adding potassium hydroxide

D
adding animal fat and coconut oil

Solution

Saponification is a process when triglyceride is treated with a strong base, which accelerates the cleavage of ester bond and releases fatty acids and glycerol.

Soaps are precipitated by salting it out with saturated sodium chloride or sodium silicate to make it hard.

Option A is correct.
Question 3
1 / -0

The process of making soap by the hydrolysis of fats and oils with alkalis is called:

A
hydrolysis

B
saponification

C
esterification

D
none of the above

Solution

Saponification is a process when triglyceride is treated with strong base,lye which accelerates the cleavage of ester bond and releases fatty acids and glycerol. Soaps are precipitated by salting it out with saturated sodium chloride.
Question 4
1 / -0

Sodium chloride is added to the solution after saponification to cause the:

A
hydrolysis of soap

B
precipitation of soap

C
sedimentation of soap

D
none of these

Solution

Soap is the sodium salt of a fatty acid and is partially soluble in water. When soap dissolves, it ionises into sodium ion and fatty acid ions.

When we add salt which is sodium chloride, it gets ionised in water and the sodium ions causes the sodium ions of soap to combine with the fatty acid ions and separate as precipitate of solid soap.
This helps in complete removal of soap from the reaction mixture. The precipitation of soap is through common ion effect.
Option B is correct.
Question 5
1 / -0

_________________are used to control body temperature during fever.

A
Antipyretics

B
Antiseptics

C

Analgesics

D
Antihistamines

Solution

Antiseptics are used to prevent bacterial growth in the body. Antipyretics are used to reduce body temperature.
Question 6
1 / -0

The hydrophilic end of synthetic detergent is:

A
$$CH_3(CH_2)_{10}-CH_2-$$

B
$$-CH_3$$

C
$$-CH_2-CH_3$$

D
$$-COO^-Na^+$$

Solution

In synthetic detergent the one end is hydrophilic, that is, it dissolves in water, while the other end is hydrophobic, that does not dissolve in water.

The hydrophilic end is a water-attracting molecule.

Option D is correct.
Question 7
1 / -0

What are used to control body temperature during fever?

A
Antipyretics

B
Analgesics

C
Antidiuretics

D
Antibiotic

Solution

Antipyretics are substances that reduce fever. Antipyretics cause the hypothalamus to override an interleukin-induced increase in temperature. The body then works to lower the temperature, resulting in a reduction in fever.
Question 8
1 / -0

____ are proteins that are crucial to body's communication process. These are present in cell membranes but a small active part of it projects out of the membrane.

A
Lipids

B
Enzymes

C
Synapses

D
Receptors

Solution

A receptor is a protein molecule usually found embedded within the plasma membrane surface of a cell that receives chemical signals from outside the cell.

Receptors are protein molecules in the target cell or on its surface that bind ligands.

Option D is correct.
Question 9
1 / -0

Drugs that bind to the receptor sites and inhibit its natural function, are called:

A
antipyretics

B
analgesics

C
agonist

D
antagonist

Solution

Drugs, that bind to the receptor site and inhibit its natural function are called antagonists. These are useful when blocking of message is required.
Question 10
1 / -0

Some drugs attach on the enzymes to sites other than active sites. These are called as______

A
Allosteric sites

B
Episteric sites

C
Inhibitor sites

D
Non-Inhibitor sites

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Re-Attempt Weekly Quiz Competition

Chemistry in Everyday Life Test - 33

Result

Chemistry in Everyday Life Test - 33

Score

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Rank

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SHARING IS CARING

Question 1

Potassium bicarbonate

Stearic acid

Salicyclic acid

Glycerine

Solution

Question 2

adding sodium carbonate or sodium silicate during its manufacture

adding sodium chloride

adding potassium hydroxide

adding animal fat and coconut oil

Solution

Question 3

hydrolysis

saponification

esterification

none of the above

Solution

Question 4

hydrolysis of soap

precipitation of soap

sedimentation of soap

none of these

Solution

Question 5

Antipyretics

Antiseptics

Analgesics

Antihistamines

Solution

Question 6

$$CH_3(CH_2)_{10}-CH_2-$$

$$-CH_3$$

$$-CH_2-CH_3$$

$$-COO^-Na^+$$

Solution

Question 7

Antipyretics

Analgesics

Antidiuretics

Antibiotic

Solution

Question 8

Lipids

Enzymes

Synapses

Receptors

Solution

Question 9

antipyretics

analgesics

agonist

antagonist

Solution

Question 10

Allosteric sites

Episteric sites

Inhibitor sites

Non-Inhibitor sites

User

Question Analysis

My Perfomance

Score

-

Rank

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