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प्रश्न
Wasp sting contains _______.
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उत्तर
Wasp sting contains alkaline substance.
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संबंधित प्रश्न
Give one example in the following case:
A base which is not an alkali.
Give one example in the following case:
An oxide which is a base.
Why indicator does not get affected by salt?
Write any four uses of bases.
Match the important chemicals given in Column (A) with the chemical formulae given in Column (B)
| Column (A) | Column (B) |
| (a) Plaster of Paris | Ca(OH)2 |
| (b) Gypsum | CaSO4. 1/2 H2O |
| (c) Bleaching Powder | CaSO4.2H7O |
| (d) Slaked Lime | CaOCl2 |
Phenolphthalein gives ______ colour with lime water.
Match the following:
| 1. | Wasp sting | a. | Milk of magnesia |
| 2. | Common salt | b. | Acetic acid |
| 3. | Organic acid | c. | Sodium chloride |
| 4. | Antacid | d. | Vinegar |
Which of the following solutions do not conduct electricity?
Water-soluble bases are called ______.
A small amount of copper oxide was taken in a beaker and dilute hydrochloric acid was added with continuous stirring of the solution. Name the compound formed and state the colour of its solution. Write the balanced chemical equation for the reaction that occurs. Based on the reaction, state the nature (acidic/basic) of copper oxide.
