Chemistry in Everyday Life Test

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Chemistry in Everyday Life Test - 36

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Weekly Quiz Competition

Question 1
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Tranquilisers are also known as:

A
psychosomatic drugs

B
psychoterapeutic drugs

C
psychosystolic drugs

D
none of the above

Solution

Tranquilizers are the drugs which are used to relieve mental ailments. These are also known as psychotherapeutic drugs as they act on the central nervous system.
Question 2
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Match the List I with the List II.
List-I List-II
(A) Oxyhemoglobin (i) Analgesic
(B) Aspirin (ii) Oxygen carrier
(C) Hemoglobin (iii) Photosynthesis
(D) Chlorophyll (iv) Oil of wintergreen
(v) $${Fe}^{2+}$$ paramagnetic
The correct match is:

A
A - v, B - i, C - ii, D - iii

B
A - iv, B - ii, C - i, D - iii

C
A - iii, B - i, C - ii, D - iv

D
A - v, B - ii, C - iii, D - i

Solution

Aspirin is used as analgesics as well as antipyretics, ie, it serves a dual purpose.
Chlorophyll is used in photosynthesis. Oxyhaemoglobin contains $${Fe}^{2+}$$ ion, so it is paramagnetic and haemoglobin works as an oxygen carrier.
Hence, A - (v), B - (i), C - (ii), D - (iii)
Question 3
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2$$-$$acetoxy benzoic acid is used as an:

A
antimalarial

B
antidepressant

C
antiseptic

D
antipyretic

Solution

Antipyretic drugs are drug used to prevent or reduce fever.

Aspirin, also known as acetylsalicylic acid (ASA) or 2-acetoxy benzoic acid, is a medication, often used to treat pain, fever, and inflammation.

Hence, option D is correct.
Question 4
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What are the substances which mimic the chemical messengers?

A
Antibiotics

B
Antagonists

C
Agonists

D
Receptors

Solution

Agonists are the substances which mimic the chemical messengers.

Agonists activate the receptors. On the other hand, Antagonists bind the receptors and disturb their functions.

Hence, option C is correct.
Question 5
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(iii) Which class of drugs is used in sleeping pills?

A
tranquilizers

B
Antacid

C
Disprine

D
Paracetamol

Solution

A tranquilliser :- refers to a drug which is designed for the treatment of anxiety, fear, tension, agitation, and disturbances of the mind, specifically to reduce states of anxiety and tension.

It is also used in Sleeping pills.
Question 6
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While studying saponification reaction for the preparation of soap, the teacher suggested to a student to add a small quantity of common salt to the reaction mixture. The function of common salt in this reaction is to:

A
reduce the alkalinity of the soap

B
reduce the acidity of the soap

C
enhance the cleansing capacity of soap

D
favour precipitation of soap

Solution

Soap is precipitated as a solid from the suspension by adding common salt to the suspension. Salt also decreases the solubility of soap. This process is called salting out of soap. Hence the correct option is D.
Question 7
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Which one of the following is an artificial sweetening agent?

A

B

C

D

Solution

The compound shown in option D is Alitame. It is an artificial sweetener and is about 2000 times sweeter than cane sugar. It is stable at high temperature.
Question 8
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Which one of the following is a food preservation?

A

B

C

D

Solution

Sodium benzoate is a substance which has the chemical formula $$C_6H_5COONa.$$

It is a widely used food preservative. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.

Hence, option A is correct.
Question 9
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While preparing soap, a small quantity of common salt is generally added to the reaction mixture of vegetable oil and sodium hydroxide. Which one of the following may be the purpose of adding common salt?

A
To reduce the basic nature of the soap

B
To make the soap neutral

C
To enhance the cleansing power of the soap

D
To favour the precipitation of the soap

Solution

The saponification reaction is exothermic in nature, because heat is liberated during the process. The soap formed remains in suspension form in the mixture. Soap is precipitated as a solid from the suspension by adding common salt to the suspension. Hence, salt helps in precipitation. This process is called salting out of soap.
Question 10
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Milk of sulphur finds its applications in :

A
medicines

B
photography

C
head of match stick

D
vulcanization

Solution

The milk of sulphur is used for treatment of various skin orders hence, it finds its application in medicine.