Acid Base

Phenolphthalein changes colour to ___________ in an acid.

• Colourless

• Blue

• Pink

• Yellow

Phenolphthalein changes colour to ___________ in an alkaline.

• Colourless

• Blue

• Pink

• Yellow

Methyl Orange changes colour to ___________ in an acid.

• Green

• Blue

• Red

• Yellow

Methyl Orange changes colour to ___________ in an alkaline.

• Green

• Blue

• Red

• Yellow

How many times can a universal indicator change colour?

• One

• Two

• Three

• More than three

The Substance which turns Blue litmus red is ......................

• Basic

• Acidic

• Neutral

• All of these

Bases turn Red litmus to ...................

• Green

• Yellow

• Blue

• Black

If the given solution neither changes the colour of the red litmus nor blue litmus paper , it is ..........................

• An Acid

• A base

• Neutral

• Colourless

Hydrochloric Acid solution affect .......................... litmus paper

• Red

• Blue

• Both of these

• None of these

Tags

NGSS.MS-PS1-2

Which method is recommended to dilute an acid

• An acid is added to water

• Water added to acid