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

Is blood a pure substance?

Name some substances that are sublime.

What are the characteristics of Pure Substances? (or) List out the characteristics of Pure Substances.

Noble gases are placed in the ______ group in the modern periodic table.

Group 16 elements are collectively called as ______.

The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.

______ group elements are called alkaline earth metals.

Spot the error:

The elements of group 13 are called the carbon family.

Spot the error:

There are 5 periods and 17 groups in the modern periodic table.

An element has the atomic number 12.

1. Write the electric configuration.
2. To which group and period does it belong.

Explain the position of hydrogen in the periodic table.

______ acid is used in aerated drinks.

What are organic acids? Given examples.

How are acids classified based on ionization? Give examples.

Acetic acid (CH₃COOH) is a mono-basic acid.

Match the following:

Choose the odd one out & give a reason:

Choose the odd one out & give a reason:

Explain the classification of acids based on their basicity.