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प्रश्न
Lemon juice and vinegar taste ___________ because they contain ___________.
उत्तर
Lemon juice and vinegar taste sour because they contain acids.
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संबंधित प्रश्न
Name the source from which litmus solution is obtained. What is the use of this solution?
One of the following salts will give an alkaline solution on dissolving in water. This is:
a) Na2CO3
(b) Na2SO4
(c) NaCl
(d) (NH4)2 SO4
Out of HCl and CH3COOH, which one is a weak acid and why? Describe an activity to support your answer.
The label on the bottle of chemical is spoiled. How will you find whether the chemical is acidic or not?
Match the pairs.
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4. Vinegar | d. Lactic acid |
Complete the following table and write one equation for each to justify the statement:
|
Reactants |
Products |
Method |
|
Soluble base + Acid (dil) |
Salt + water |
Neutralisation Titration |
|
Metal + Non-metal |
Salt (soluble/insoluble) |
______ |
|
Insoluble base + ______ |
Salt (soluble) + water |
______ |
|
Active metal + Acid (dil) |
______ + ______ |
______ |
|
Soluble salt solution (A) + Soluble salt solution (B) |
Precipitated salt + Soluble salt |
______ |
|
Carbonate/bicarbonate + Acid (dil) |
Salt + ______ + ______ |
Decomposition of carbonate |
|
Chlorides/nitrates + Acid (conc.) |
______ + ______ |
Decomposition of chlorides and nitrates |
Answer the following question.
Identify the acid and the base from which sodium chloride is obtained. Which type of salt is it? When is it called rock salt? How is rock salt formed?
Which of the following is an acid-base indicator?
The Acid secreted in our stomach is ______.
Which of the following metal does not react with sodium hydroxides?
