SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Why is food preserved?

The shape of Vibrio cholerae is ______.

Cholera is a ______ disease.

Name one disease that is transmitted by houseflies. Mention their causative pathogen.

A baby is suffering from diarrhoea, while other babies in the same locality do not.
Mention the possible causes that you think. What would be the possible solutions for this?

A physical balance measures small differences in mass up to ______.

The domestic electricity in India is an ac with a frequency ______ of Hz.

Conceptual question.

Can electroplating be possible with alternating current?

The repeated reflection that results in persistence of sound is called ______.

Chromatography is based on the principle of ______.

______ is a chemical used in finger print analysis.

What is Forensic chemistry related to?

Outline the flow charts of Phylum Chordata.

Describe the characteristic features of different Prochordates.

In which stage of mitosis the chromosomes align in an equatorial plate? How?

The structural and functional unit of the kidney is ______.

The common passage meant for transporting urine and sperms in male is ______.

Higher Order Thinking Skill

Name the blood vessel that 

1. enter malphigian capsule and 
2. leaves malphigian capsule.

The sprouting of onion and potatoes can be delayed by the process of ______.

Explain any two methods of food preservation.