MEDIUM
Lower Secondary Stage 7
IMPORTANT
Earn 100

State whether the following is an acid, alkali or a neutral substance. If it is an acid or alkali, you should also say whether they are strong or weak.

  • A liquid with a pH of 8.

Important Questions on Acids and Alkalis

MEDIUM
Lower Secondary Stage 7
IMPORTANT

State whether the following is an acid, alkali or a neutral substance. If it is an acid or alkali, you should also say whether they are strong or weak.

  • A substance which turns universal indicator yellow.
EASY
Lower Secondary Stage 7
IMPORTANT

State whether the following is an acid, alkali or a neutral substance. If it is an acid or alkali, you should also say whether they are strong or weak.

  • A chemical with a pH of 7.
MEDIUM
Lower Secondary Stage 7
IMPORTANT

State whether the following is an acid, alkali or a neutral substance. If it is an acid or alkali, you should also say whether they are strong or weak.

  • A substance with a pH of 14.
MEDIUM
Lower Secondary Stage 7
IMPORTANT

State whether the following is an acid, alkali or a neutral substance. If it is an acid or alkali, you should also say whether they are strong or weak.

  • A liquid which turns universal indicator blue.
EASY
Lower Secondary Stage 7
IMPORTANT

For the following statement, say whether it is true or false. If it is false, write the correct answer.

A strong acid has a pH range of 4-6.

EASY
Lower Secondary Stage 7
IMPORTANT

For the following statement, say whether it is true or false. If it is false, write the correct answer.

A weak alkali has a pH range of 8-10.

EASY
Lower Secondary Stage 7
IMPORTANT

For the following statement, say whether it is true or false. If it is false, write the correct answer.

A neutral substance turns universal indicator green.

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Give an example of a strong acid, weak acid, strong alkali and a weak alkali.