MEDIUM
7th CBSE
IMPORTANT
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An acidic solution gives green colour with China rose indicator.

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Important Questions on Acids, Bases and Salts

HARD
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Chapter Based Formative Assessment>Q 2
Ammonium hydroxide is a strong base.
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Chapter Based Formative Assessment>Q 3
Aluminium hydroxide is an alkali.
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Chapter Based Formative Assessment>Q 4
Battery acid is dilute sulphuric acid.
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Chapter Based Formative Assessment>Q 5
A salt solution that turns red-cabbage juice to red is basic in nature.
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 5 - Acids, Bases and Salts>Chapter Based Formative Assessment>Q 1

Solve the crossword puzzle with the help of clue given.

Question Image 

ACROSS
1. The acid present in lemons. (10)
2. A natural dye extracted from Lichens. (6)
3. Medicine to cure acidity. (7)
4. Source of a purple coloured indicator which becomes green in basic medium and red in acidic medium. (10)
DOWN
5. Taste of alkalis. (6)
6. Colour of litmus in acidic solution. (3)
7. A substance that is bitter in taste. (4)
8. Highly soluble base in water. (6)
9. Colour of litmus in basic solution. (4)