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

Choose the odd one out and write the reason:

A salt that is formed by the complete neutralization of an acid and a base is called ______ salt. 

The chemical name of plaster of Paris is ______.

The acid reacts with a base to form a neutral product called ______.

Acids react with metallic oxides to produce ______.

Salt is ______ in nature.

Salt which is formed by the partial replacement of hydrogen ions of an acid by a metal is called ______.

What are hygroscopic substances?

How is normal salt obtained? Give a suitable reaction.

What are the drawbacks of plastics?

A survey showed that one-time-use plastic items were among the top 10 plastic items found in garbage washed up from oceans. Can this be true? Explain how.

Most one-time-use plates are made from ______.

Pet name for Buckminster Fullerene is  ______.

Polycarbonate (PC) plastic contains ______.

The used plate is easy to recycle.

Assertion (A): PVC is an unsafe plastic.
Reason (R): Burning PVC releases dioxins, a most toxic chemical.

Answer the following by rearranging the jumbled letters :

Plastics made of _______ are represented by resin code #6.

sytlopynere

Answer the following by rearranging the jumbled letters :

One-time use plastics are also known as ______ plastics.

áwyrhotwa

Answer the following by rearranging the jumbled letters :

One-time use of plastics causes ______ damage.

trnvomenialne

Answer the following by rearranging the jumbled letters :

Expanded polystyrene is commercially known as ______.

mthreolco