B. VERY SHORT-ANSWER QUESTIONS: Give one-word answers.
1. Which of these is a salt—hydrochloric acid, sodium hydroxide, sodium chloride? Soditi weldon
2. If a liquid turns blue litmus red, is it an acid, base or salt? an acid
3. Methyl orange has
colour in an acidic solution.
4. When water is added to a strong acid, it becomes dilute. True or false?
5. Name one mineral acid.
6. Milk contains
acid.
7. Which gas is produced when sodium carbonate reacts with dilute hydrochloric acid?
8. Name the reaction between an acid and a base which forms a salt and water.
9. Which acid is used in the manufacture of the fertilizer superphosphate?
is a base that is soluble in water.
11. Which base does not ve a metal atom in its molecule?
12. Is sodium hydroxide an acid or a base?
13. Turmeric turns
in acidic solutions.
14. If you are a manufacturer of soap, which base would you require?
15. Which base will you take as medicine, if you are having a stomachache due to indigestion?
16. A salt is formed when a metal displaces hydrogen from an acid. True or false?
17. What is the colour of litmus paper in an alkali?
10. An dash is a base that is soluble in water
Answers
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Answer:
Agriculture can be called the backbone of India's economic system because two-thirds of the Indian population is engaged in the cultivation of land. Agriculture not only helps to feed the large population, but it also supports the principal manufacturing industries with raw materials.
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Answer:
1. Sodium Chloride
2.Acid
3. Red
4.False
5. Nitric acid
6. Lactic Acid
7.Carbon di oxide
8. Neutralization
9. Sulfuric Acid
10. Alkali
11. Ammonium Hydroxide
12.Base
13.Yellow
14.Sodium Hydroxide
15. Acid reflux
16. True
17. Blue
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