SSLC (English Medium) कक्षा ९ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

What are the letters A, Z, and X stand for?

What is the relation between mass number & atomic number?

Compare the charge and mass of protons and electrons.

Ca²⁺ has completely filled outer shell. Justify your answer.

Define ionisation.

Correct the wrong statement given below:

Nitric Acid is a constituent of baking powder.

Correct the wrong statement given below:

Ca(OH)₂ is a triacidic base.

Describe the classification of bases based on their acidity.

Paracetamol is a ______.

What are antipyretics?

The skeletal framework of the phylum Porifera is made up of ______.

A true body cavity is located within ______.

Tissue organization can be seen in phylum Porifera.

Name the locomotory organs seen in phylum protozoa.

It conducts food from pharynx to stomach by peristalsis.

Seafood is a source of ______.

Analogy:

______: Anaemia
Iodine: ______

Name the major minerals required by the human body.

Give two examples of trace elements required by the body.

______ are the constituents of teeth, bones, tissues, blood, muscle, and nerve cells.