HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Biology

Multiple choice question.

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?

Opium derivative is ____________.

The stimulant present in tea is ___________.

Which of the following is caused by smoking?

Name one disease caused by smoking?

Name the addicting component found in tobacco.

Why is smoking a bad habit?

Describe the ill –effects of alcoholism on health.

In your view, what motivates youngsters to take to alcohol or drugs and how can this be avoided?

Do you think that friends can influence one to take alcohol/drugs? If yes, how may one protect himself/herself from such an influence?

Removal of large pieces of floating debris, oily substances, etc. during sewage treatment is called _______________.

One of the free-living anaerobic nitrogen-fixer is _________.

Why is this sewage water treatment essential?

Name the chamber in which the suspended objects are filtered and removed during sewage treatment?

Name the tank to which the sewage water is passed after the preliminary treatment?

What are flocs with respect to sewage treatment?

Small part of activated sludge is passed back into primary sedimentation tank.

If the above statement is correct then rewrite as it is and in case it is incorrect then reframe it.

Rearrange the names of tanks used in sewage treatment as per the flow of the procedure.

1. Settling tank
2. Grit Chamber
3. Aeration tanks 
4. Primary sedimentation tank.

What is ‘Hello Forest’?

Name the Japanese method of plantation adapted by our government.