Acids, bases and salts

Which of the following is not a natural indicator?

• 
• 
• 
• 

Complete the riddle:

Coffee is brown

Bitter in taste.

Is it acid?

Or a _________

The most commonly used natural indicator Litmus is extracted from _________.

The solutions which do not change colour of either red or blue litmus are known as ?

• acidic solution

• neutral solution

• basic solution

Neutralisation reaction occurs between?

• acids and acids

• acids and bases

• bases and bases

Tags

NGSS.MS-PS1-5

Which of the following is the product of neutralisation reaction?

• salt

• water

• heat

• all of the above

Substances which are neither acidic nor basic are called ______

Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution?

• Acidic

• Basic

• Neutral

Sodium hydroxide (NaOH) turns blue litmus red?

• True

• False

Tags

NGSS.MS-PS1-2