Explore topic-wise MCQs in Biology.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the full form of IARI?

A. Indian Ayurveda research institute
B. Indian aeronautical research institute
C. Indian aerospace research institute
D. Indian agricultural research institute
Answer» E.
Discussion
2.

Biogas plants are more often built in urban areas.

A. True
B. False
Answer» C.
Discussion
3.

Which of the following is not true for a biogas plant?

A. The floating cover is placed over slurry
B. Biogas plant does not have an outlet
C. The slurry is removed and may be used as a fertiliser
D. The concrete tank is 10-15 feet deep
Answer» C. The slurry is removed and may be used as a fertiliser
Discussion
4.

What is the height of the concrete tank used in biogas plant?

A. 10-15 metres
B. 15-20 metres
C. 10-15 feet
D. 15-20 feet
Answer» D. 15-20 feet
Discussion
5.

Which of the following gas is produced using dung of cattle?

A. Greenhouse gas
B. Nitrous gas
C. Gobar gas
D. Water-gas
Answer» D. Water-gas
Discussion
6.

On which of the following factors does the type of gas produced depend?

A. Substrate
B. Cofactors
C. Catalysts
D. Product
Answer» B. Cofactors
Discussion
7.

In rumen of cattle, methanogens help in the breakdown of cellulose.

A. True
B. False
Answer» B. False
Discussion
8.

What do we collectively call the biogas producing bacteria?

A. Archaebacteria
B. Cyanobacteria
C. Eubacteria
D. Methanogens
Answer» E.
Discussion
9.

On which medium do certain bacteria grow to produce biogas?

A. Lignin
B. Cellulose
C. Chitin
D. Cheese
Answer» C. Chitin
Discussion
10.

Which of the following gases is not included in biogas?

A. CH<sub>4</sub>
B. H<sub>2</sub>S
C. CO<sub>2</sub>
D. H<sub>2</sub>O
Answer» E.
Discussion