SSLC (English Medium) Class 7 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Assertion: Iron ball sinks in water.

Reason: Water is denser than iron.

Give the formula to find the density of objects.

Name the liquid in which iron ball sinks.

What is the density of gold?

Define the density of objects.

How will you determine the density of a stone using a measuring jar?

______ of some elements are derived from Latin or Greek names of the elements.

Write the symbols for the following elements and classify them as solid, liquid and gas. Aluminum, Carbon, Chlorine, Mercury, Hydrogen and Helium

Describe the different ways in which we can write the symbols of elements. Give appropriate examples.

State true or false. If false, correct the statement.

Chicken pox is also known as leucoderma.

State true or false. If false, correct the statement.

Rabies is a fatal disease.

Assertion: Chicken pox is a viral communicable disease.

Reason: It is characterized by rashes on the whole body, fever, head ache and tiredness.

______ of the following are endothermic changes.

Write two features of protista

A ______ reflection helps us to see the object

Reflection of light from rough surface is called ______ reflection

With the help of a diagram, state the laws of reflection

What are regular and irregular reflection? Explain with the help of diagrams

The moon takes ______ days to complete one revolution around the Earth

If the Moon is appeaing in the sky today near the star Karthikai , the position of the Mon after 27 days is near the star