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प्रश्न
Why is it wrong to treat a wasp sting with baking soda solution?
उत्तर
When a wasp stings a person, it inserts an alkaline solution into the person's skin, which causes severe pain and irritation. The alkali has to be neutralised by an acid and not a base. If we apply a baking soda solution, which is a weak base, it worsens the pain. Hence, it is wrong to treat a wasp sting with a baking soda solution.
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संबंधित प्रश्न
The indicator which produces a pink colour in an alkaline solution is:
(a) methyl orange
(b) turmeric paper
(c) phenolphthalein
(d) litmus paper
What happens when bases react with non-metal oxides? Explain with the help of an example. What does this reaction tell us about the nature of non-metal oxides?
Bee sting contains:
(a) an acidic liquid
(b) a salt solution
(c) an alkaline liquid
(d) an alcohol
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
Name an acid used as an eyewash.
Do basic solutions also have H+(aq)? Why are they basic?
Give the name and formula of two : Strong monobasic acids
Explain, all alkalis are bases but all bases are not alkalis.
Match the following:
| 1. | The hardest substance in our body | a. | Aluminum phosphate |
| 2. | Citrus fruits | b. | Potash alum |
| 3. | Rice plant | c. | Insoluble in water |
| 4. | Double salts | d. | Acidic soil |
| 5. | Silver chloride | e. | Calcium phosphate |
| f. | Alkaline soil |
Explain the following:
H3PO3 is not a tribasic acid.
