SSLC (English Medium) Class 10 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Match the following

The molecular formula of green vitriol is MgSO₄.7H₂O.

Define Hydrated salt.

A hot saturated solution of copper sulphate forms crystals as it cools. Why?

'A' is a blue coloured crystalline salt. On heating, it loses blue colour and to give 'B'. When water is added, 'B' gives back to 'A'. Identify A and B, write the equation.

What happens when MgSO₄.7H₂O is heated? Write the appropriate equation?

An atom or a group of atoms that is responsible for the chemical characteristics of an organic compound is called ______.

Match the following.

In monocot, stem cambium is present in between the xylem and phloem.

Anemophilous flowers have ______.

Mention the function of the endosperm.

The part of the pistil which serves as a receptive structure for the pollen is called style.

Anemia can be cured by ______ isotope.

Compare the properties of alpha, beta, and gamma radiations.

Paleontologists deal with ______.

The best way of direct dating fossils of recent origin is by ______.

Birds have evolved from reptiles.

Which organism is considered to be the fossil bird?

What is the study of fossils called?

Why is Archaeopteryx considered to be a connecting link?