Blog Log in Get Started Free

Botany MCQs for NEET — Practice Questions with Answers

Practice free Botany NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

All Physics Chemistry Botany Zoology

Chapter Language Difficulty Show only questions I answered incorrectly Register free to filter questions

● ● ● ● ●

The growth of Flocs is facilitated by

A. Constant agitation mechanically B. Air is pumped C. Both A and B D. Filaments of algae

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

BOD is

A. Amount of oxygen taken by bacteria to survive in 100mL water B. Amount of oxygen taken by bacteria to oxidise organic matter in 1L of water C. Amount of oxygen taken by bacteria to oxidise inorganic matter in 100mL of water D. Amount of oxygen evolved by bacteria to oxidise organic matter of 1L water

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

Which of the following is not indicated by BOD test?

A. Rate of uptake of oxygen by microorganisms in a sample of water B. A measure of organic matter present in the water C. Polluting potential D. Amount of Flocs

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

The bacterial Flocs of sewage treatment plants are allowed to settle in

A. Primary Settling Tank B. Aeration Tank C. Activated sludge D. Secondary Settling tank

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

Activated sludge is

A. Sedimented bacterial Flocs B. Bacterial Flocs of aeration tank C. Anaerobic sludge D. Effluent of primary settling tank

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

The activated sludge is

A. Pumped back into aeration tanks B. Pumped into large anaerobic sludge digesters C. Pumped into primary settling tank D. Both A and B

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

The major part of activated sludge is sent to

A. Anaerobic sludge digesters B. Aerobic sludge digesters C. Aeration tank D. Settling tank

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

From secondary settling tanks what is used as inoculum for primary settling tanks?

A. Activated sludge B. Anaerobic bacteria C. Fungal Filaments D. Biogas

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

In anaerobic sludge digesters, the anaerobic bacteria

A. Digest Fungi B. Digest Bacteria C. Both A and B D. Digest the organic matter

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

● ● ● ● ●

Methane, Hydrogen sulfide and carbon dioxide are produced in

A. Aerobic settling tanks B. Anaerobic sludge digesters C. Aeration tanks D. Primary settling tanks

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

Ready to ace NEET?

Free access · No credit card required

Browse All Questions Create Free Account

Frequently Asked Questions

Yes. You can attempt every Botany question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.

No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.

The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.