Microbes in Human Welfare MCQ Practice Test

Question 1

Lactic Acid Bacteria (LAB) check the growth of disease-causing microbes in the stomach and increase:

Accepted Answer

Vitamin B12

Answer

Vitamin B1

Answer

Vitamin C

Answer

Vitamin D

Question 2

Which of the following organic acids is produced by a fungal microbe?

Accepted Answer

Citric acid

Answer

Acetic acid

Answer

Butyric acid

Answer

Lactic acid

Question 3

Which enzyme is clinically referred to as a 'clot buster'?

Accepted Answer

Streptokinase

Answer

Lipase

Answer

Pectinase

Answer

Amylase

Question 4

BOD is a measure of:

Accepted Answer

Organic matter in water

Answer

Inorganic minerals in sewage

Answer

Pathogenic load in water

Answer

Dissolved oxygen in aeration tank

Question 5

During anaerobic digestion of sewage sludge, which mixture of gases is produced?

Accepted Answer

Methane, Hydrogen Sulfide, CO2

Answer

Methane, Oxygen, CO2

Answer

Ethane, Hydrogen Sulfide, CO2

Answer

Methane, Nitrogen, Oxygen

🦠 Microbes in Human Welfare MCQs