Microorganisms Friend And Foe Test

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Microorganisms Friend And Foe Test - 25

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Weekly Quiz Competition

Question 1
1 / -0

Common preservative used in jam and pickles is ________

A
Sodium benzoate

B
Nitric acid

C
Sodium chloride

D
Copper sulphate

Solution

There are many chemical preservatives used in food industry. Sodium benzoate is generally used is ketchups, pickles, jams etc.
Question 2
1 / -0

Chicken pox is a ______ borne disease.

A
Air

B
Water

C
Soil

D
Animal

Solution

Chickenpox is an airborne disease which spreads easily through the coughs and sneezes of an infected person.
Question 3
1 / -0

Mark the correct statement.

(A) Common salt has been used to preserve meat and fish for ages.
(B) Meat and fish are covered with dry salt to check the growth of bacteria.
(C) Salting is also used to preserve amla, raw mangoes, tamarind, etc.

A
(A) and (B) only

B
(B) and (C) only

C
(A) and (C) only

D
All of the above

Solution

Common salt has been used to preserve meat and fish for ages. Meat and fish are covered with dry salt to check the growth of bacteria. Salting is also used to preserve amla, raw mangoes, tamarind, etc. Common salt reduce the water content, thus inhibiting the bacterial growth on the food items.
So, the correct answer is option D.
Question 4
1 / -0

Suspensions of killed or weakened microbes or derivatives of microorganisms are called ________

A
Drugs

B
Probiotics

C
Vaccines

D
Antibiotics

Solution

Vaccines are suspensions of killed or weakened microbes or products or derivatives of micro organisms. A vaccine produces immunity to a disease by stimulating the production of antibodies.
Question 5
1 / -0

Salt is used in raw mangoes, amla, tamarind for

A
Enhancing the taste

B
Enhancing the colour of pickle

C
Preservation

D
None of the above

Solution

Common salt has been used to preserve meat and fish for ages. Meat and fish are covered with dry salt to check the growth of bacteria. Salting is also used to preserve amla, raw mangoes, tamarind, etc. Common salt reduce the water content.
So, the correct answer is 'As a preservative'
Question 6
1 / -0

A boy was invited by his friend to a party and he ate a variety of foodstuff. On reaching home he started vomiting. He had to be taken to a hospital. The doctor said that this condition could be due to ________

A
Empty stomach

B
Food poisoning

C
Due to weak stomach movement

D
All of the above

Solution

Since he ate variety of foodstuffs,the condition could be due to food poisoning.Food poisoning could be due to the consumption of food spoilt by some microorganisms. Microorganisms that grow on our food sometimes produce toxic substances.
Question 7
1 / -0

Vaccines are important for

A
Children

B
Adults

C
Both A and B

D
None of the above
Solution
- Vaccines are the suspension of weakened or killed microorganism which generates the immune response.
- It provides active acquired immunity to a particular disease. It is important for both, adults and children, as they can protect us from the many diseases.
So, the correct answer is option C.
Question 8
1 / -0

Salt preservation technique is generally used in ________

A
Pickles

B
Jams and jellies

C
Fruit drinks

D
Both A and B

Solution

Common salt has been used to preserve meat and fish for ages. Meat and fish are covered with dry salt to check the growth of bacteria. It is also used in pickles to preserve them.
Question 9
1 / -0

Diseases like polio and chicken pox are caused by ________.

A
Bacteria

B
Fungi

C
Viruses

D
Worms

Solution

Both polio and chickenpox are caused by viruses.
Therefore, the correct answer is option C.
Question 10
1 / -0

The undesirable change in a food that makes it unsafe for human consumption is referred to as:

A
Food wastage

B
Food spoilage

C
Food loss

D
All of the above

Solution

Food spoilage is the decrease in the original nutritional value, texture, and flavor of the food. Such food becomes harmful and unsuitable for human consumption. This can happen due to bacterial or fungal action if food is left open for a long time. Food spoilage can be prevented by different methods such as adding preservatives, refrigeration, freezing, boiling, smoking, and canning. Thus, the correct answer is option B.

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Re-Attempt Weekly Quiz Competition

Microorganisms Friend And Foe Test - 25

Result

Microorganisms Friend And Foe Test - 25

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SHARING IS CARING

Question 1

Sodium benzoate

Nitric acid

Sodium chloride

Copper sulphate

Solution

Question 2

Air

Water

Soil

Animal

Solution

Question 3

(A) and (B) only

(B) and (C) only

(A) and (C) only

All of the above

Solution

Question 4

Drugs

Probiotics

Vaccines

Antibiotics

Solution

Question 5

Enhancing the taste

Enhancing the colour of pickle

Preservation

None of the above

Solution

Question 6

Empty stomach

Food poisoning

Due to weak stomach movement

All of the above

Solution

Question 7

Children

Adults

Both A and B

None of the above

Solution

Question 8

Pickles

Jams and jellies

Fruit drinks

Both A and B

Solution

Question 9

Bacteria

Fungi

Viruses

Worms

Solution

Question 10

Food wastage

Food spoilage

Food loss

All of the above

Solution

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