Default Title

Question (31)

QN002981

Vaccination protects people by preparing the body to fight:

(A) dust particles
(B) harmful microorganisms
(C) minerals
(D) vitamins

Correct Answer: B

Explanation:

Vaccination helps fight harmful microbes.

Link:

Report Error

Question (32)

QN002982

Which of the following practices helps reduce food spoilage by microbes?

(A) Keeping food uncovered
(B) Storing food in moist places
(C) Refrigeration
(D) Mixing food with mud

Correct Answer: C

Explanation:

Refrigeration slows microbial growth.

Link:

Report Error

Question (33)

QN002983

If 1 kg fruits require 50 g sugar for preservation, how much sugar is needed for 8 kg fruits?

(A) 100 g
(B) 200 g
(C) 300 g
(D) 400 g

Correct Answer: D

Explanation:

50 × 8 = 400 g.

Link:

Report Error

Question (34)

QN002984

Which microorganism is directly useful in increasing nitrogen supply in soil?

(A) Rhizobium
(B) Amoeba
(C) Virus
(D) Yeast

Correct Answer: A

Explanation:

Rhizobium increases soil nitrogen.

Link:

Report Error

Question (35)

QN002985

Bread becomes soft and porous mainly due to:

(A) oxygen bubbles
(B) carbon dioxide released by yeast
(C) nitrogen fixation
(D) chlorophyll formation

Correct Answer: B

Explanation:

Carbon dioxide released by yeast makes bread porous.

Link:

Report Error

Question (36)

QN002986

Which of the following is an example of microbial activity beneficial to humans?

(A) Spoilage of cooked rice
(B) Formation of curd
(C) Growth of fungus on bread
(D) Decay of stored fruits

Correct Answer: B

Explanation:

Formation of curd is beneficial.

Link:

Report Error

Question (37)

QN002987

A farmer adds decomposed organic waste to soil mainly to:

(A) reduce soil fertility
(B) improve nutrient content
(C) destroy all microorganisms
(D) remove water completely

Correct Answer: B

Explanation:

Organic waste improves soil nutrients.

Link:

Report Error

Question (38)

QN002988

Which of the following correctly explains antibiotics?

(A) They increase microbial growth
(B) They destroy or stop growth of harmful microbes
(C) They are used only in agriculture
(D) They are nutrients produced by plants only

Correct Answer: B

Explanation:

Antibiotics stop harmful microbes.

Link:

Report Error

Question (39)

QN002989

A student notices fungal growth on moist bread after several days. This observation shows that microbes grow well in:

(A) dry conditions
(B) moist conditions
(C) vacuum
(D) freezing conditions

Correct Answer: B

Explanation:

Moisture supports microbial growth.

Link:

Report Error

Question (40)

QN002990

Humans are connected to microbes because microbes help in food preparation, medicine, farming, and:

(A) pollution only
(B) decomposition of waste
(C) stopping respiration
(D) reducing soil nutrients

Correct Answer: B

Explanation:

Microbes help in decomposition of waste.

Link:

Report Error

Question (31)

Vaccination protects people by preparing the body to fight:

Explanation:

Link:

Question (32)

Which of the following practices helps reduce food spoilage by microbes?

Explanation:

Link:

Question (33)

If 1 kg fruits require 50 g sugar for preservation, how much sugar is needed for 8 kg fruits?

Explanation:

Link:

Question (34)

Which microorganism is directly useful in increasing nitrogen supply in soil?

Explanation:

Link:

Question (35)

Bread becomes soft and porous mainly due to:

Explanation:

Link:

Question (36)

Which of the following is an example of microbial activity beneficial to humans?

Explanation:

Link:

Question (37)

A farmer adds decomposed organic waste to soil mainly to:

Explanation:

Link:

Question (38)

Which of the following correctly explains antibiotics?

Explanation:

Link:

Question (39)

A student notices fungal growth on moist bread after several days. This observation shows that microbes grow well in:

Explanation:

Link:

Question (40)

Humans are connected to microbes because microbes help in food preparation, medicine, farming, and:

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY