Chemistry in Everyday Life Test

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Chemistry in Everyday Life Test - 46

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Question 1
1 / -0

Face powders are used for a smooth appearance of the skin by covering any unwanted secretions of oil. Which is the main ingredient of face powder?

A
Precipitates

B
Talc

C
Zinc oxide

D
Zinc stearate

Solution

Talc is often considered to be the main ingredient of face powder. Talc also known as French chalk, is a naturally occurring minerals that absorbs moisture and oil. It leaves the skin feeling soft and fresh and can help to control shine.
Question 2
1 / -0

Match the column I with column II and mark the appropriate choice.

Column I Column II
(A) Acetyl salicylic acid (i) Insecticide
(B) DDT (ii) Drug
(C) Naphthalene (iii) Fire extinguisher
(D) Carbon tetrachloride (iv) Moth repelling

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

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

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

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

Solution

$$(A)$$ Acetyl salicylic acid also known as Aspirin is a medication used to treat pain, fever or inflammation.
$$(B)$$ DDT- Dichlorodiphenyl trichloro ethane is used an insectide.
$$(C)$$ Napthalene is used as moth-repellant.
$$(D)$$ $$CCl_4$$ is used for fire extinguisher for petrol flares.
Question 3
1 / -0

Grease is applied to parts of a motor vehicle for smooth movement. Greases are, essentially, lubrication oils made into a jelly by:

A
soaps of fatty acids

B
blowing air under pressure

C
adding wax

D
churning of starch

Solution

Grease is a semisolid lubricant. Grease generally consists of a soap emulsified with mineral or vegetable oil.
The characteristics feature of greases is that they possess a high initial viscosity, which upon the application of shear, drops to give the effect of an oil-lubricated bearing of approximately the same viscosity as the base oil used in the grease. This change in viscosity is called shear thinning. A true grease consists of an oil and/or other fluid lubricants that is mixed with a thickener, typically a soap, to form a solid or semisolid. Soaps are the most common emulsified agent used, and the selection of the type of soap is determined by the application.
Question 4
1 / -0

There are various arsenic drugs (containing arsenic compounds), such as Salvarsan, Atoxyl, and Tryparsamide. Their main use is in the treatment of:

A
Syphilis

B
Typhoid

C
Jaundice

D
Cholera

Solution

Paul Ehrlich, a German scientist, investigated arsenic-based structures in order to produce less toxic substances for the treatment of syphilis. The arsenic drugs used to treat the disease syphilis due to the effect on the bacteria, spirochete, which causes syphilis.
Salvarsan is an arsenic-containing drug used for the treatment of syphilis.
Question 5
1 / -0

Sometimes moulds (fungus) grow on bread or grains,like rice, corn and beans. These moulds (fungus) produce a carcinogenic (cancer-causing) poison,namely:

A
aflatoxin

B
cyanide

C
sodium phosphate

D
alfalfa

Solution

Aflatoxins are a family of toxins produced by certain fungi that are found agricultural crops such as maize(corn), peanuts, cottonseed, and tree nuts. The main fungi that produce aflatoxins are aspergillus flavus ans aspergillus, parasiticus, which are abundant in warm and humid region of the world. Aflatoxin-producing fungi can contaminate crops in the field, at harvest,and during storage.
Question 6
1 / -0

Soap was never actually discovered but instead gradually evolved from crude mixtures of alkaline and fatty material. Up to 1800, soap was believed to be a mechanical mixture of fat and alkali, then Chevreul, a French chemist showed that soap formation, was actually a chemical reaction.
Which one of the following follows from the above statement?

A
Chevreul discovered the process of soap making

B
Alkaline and fatty material, both being natural material, their mixture which is used as soap is still natural materials mixture

C
Soap is a natural product, whose existence was later established

D
Crude mixing of alkaline and fatty material in early days was actually chemical process of formation of soap

Solution

Soap making has remained unchanged over the centuries. The ancient Roman tradition called for mixing rain water. potash and animal tallow. Making soap was a long and arduous process. First, the fat had to be rendered . Then potash solution was added. Since water and oil do not mix, this mixture had to be continuously stirred and heated sufficiently to keep the fat melted. Slowly a chemical reaction called saponification would take place between the fat and the hydroxide which resulted in a liquid soap. When the fat and water no longer separated, the mixture was allowed to coll. At this point salt, such as sodium chloride, was added to separate the soap from the excess water. The soap came to the top, was skimmed off, and placed in wooden molds to cure. It was aged many months to allow the reaction to run to completion.
Question 7
1 / -0

Which of the following is not an artificial sweetener?

A
Sucralose

B
Alitame

C
Saccharin

D
Sucrose

Solution

Sucrose is naturally occurring sugar.

Sucrose is produced naturally in plants from which table sugar is refined.

It is disaccharide, a molecule composed of two monosaccharides: glucose and fructose.

Hence, option D is correct.
Question 8
1 / -0

Equanil is an example of:

A
artificial sweeteners

B
tranquilisers

C
antihistamines

D
antifertility drugs

Solution

Meprobamate affects chemicals in your brain that may become unbalanced and cause anxiety. Equanil is a tranquilizer used for short term treatment of anxiety.
Question 9
1 / -0

Barbituric acid and its derivatives are known as:

A
tranquilizers

B
antiseptics

C
analgesics

D
antipyretics

Solution

The drugs which act on the central nervous system (CNS) and help in reducing stress and fatigue by inducing of sense of well being are called tranquilizers. They are psychotherapeutic drugs. The most commonly used tranquilizers are barbituric acid and its 5, 5-disubstituted derivatives such as veronal, luminal and seconal.
Question 10
1 / -0

Which of the following will not act as antacid?

A
Sodium hydrogencarbonate

B
Magnesium hydroxide

C
Sodium carbonate

D
Aluminium carbonate

Solution

An antacid is a substance which neutralises stomach acidity and is used to relieve heartburn, indigestion or an upset stomach.
Antacids contain alkaline ions that chemically neutralise stomach gastric acid, reducing damage and relieving pain.
Examples of antacids are-
Sodium hydrogencarbonate,Magnesium hydroxide,Aluminium carbonate,Aluminium hydroxide.

Sodium carbonate known as washing soda is quite alkaline in nature and has a horrid soapy taste. It is not very palatable and could burn the throat. Bicarbonate is much gentler and not as strongly alkaline, and therefor more palatable. Hence, it will not act as Antacid.

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Re-Attempt Weekly Quiz Competition

Column I	Column II
(A) Acetyl salicylic acid	(i) Insecticide
(B) DDT	(ii) Drug
(C) Naphthalene	(iii) Fire extinguisher
(D) Carbon tetrachloride	(iv) Moth repelling

Chemistry in Everyday Life Test - 46

Result

Chemistry in Everyday Life Test - 46

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SHARING IS CARING

Question 1

Precipitates

Talc

Zinc oxide

Zinc stearate

Solution

Question 2

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

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

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

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

Solution

Question 3

soaps of fatty acids

blowing air under pressure

adding wax

churning of starch

Solution

Question 4

Syphilis

Typhoid

Jaundice

Cholera

Solution

Question 5

aflatoxin

cyanide

sodium phosphate

alfalfa

Solution

Question 6

Chevreul discovered the process of soap making

Alkaline and fatty material, both being natural material, their mixture which is used as soap is still natural materials mixture

Soap is a natural product, whose existence was later established

Crude mixing of alkaline and fatty material in early days was actually chemical process of formation of soap

Solution

Question 7

Sucralose

Alitame

Saccharin

Sucrose

Solution

Question 8

artificial sweeteners

tranquilisers

antihistamines

antifertility drugs

Solution

Question 9

tranquilizers

antiseptics

analgesics

antipyretics

Solution

Question 10

Sodium hydrogencarbonate

Magnesium hydroxide

Sodium carbonate

Aluminium carbonate

Solution

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