Name: pH Scale
Uploaded: 2019-07-19
Duration: 9 min 45 s
Description: This video discusses the pH of acids, bases, and salts and also the limitations of using a pH scale for identification. The natural indicators do the verific...

Question

Solve the crossword puzzle with the help of clue given.

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)

Accepted Answer

ACROSS: 1. The acid present in lemon is citric acid.

ACROSS: 2. A natural dye extracted from lichens is litmus.

ACROSS: 3. Medicine to cure acidity is called antacid. For preventing or correcting acidity, especially in the stomach.

ACROSS: 4. The source of a purple coloured indicator which becomes green in basic medium and red in acidic medium is Red Cabbage.

DOWN: 5. The taste of alkalis is bitter. They are soluble in water.

DOWN: 6. Colour of litmus in an acidic solution is red.

DOWN: 7. A substance that is bitter is called base.

DOWN: 8. Highly soluble base in water is called alkali.

DOWN: 9. Colour of litmus in basic solution is blue. The completed puzzle is:

Important Questions on Acids, Bases and Salts

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