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प्रश्न
Which chemical is injected into the skin of a person during an ant’s sting?
How can the effect of these stings be neutralised?
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उत्तर
During an ant sting, methanoic acid is injected into the skin, which causes severe pain and irritation. The effect of the sting can be neutralised by applying a mild base like a baking soda solution on the affected area.
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संबंधित प्रश्न
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Name the source from which litmus solution is obtained. What is the use of this solution?
What are organic acids?
What is produced if an acid is added to a base?
Why is it wrong to treat a bee sting with vinegar?
One of the following does not inject an acidic liquid into the skin through its sting. This is:
What type of ions are formed?
When a base (or alkali) is dissolved in water.
Give two examples of the following:
oxy-acid
Explian the following:
Dil. HCl acid is stronger than highly concentrated acetic acid.
What is the difference between an alkali and a base?
Write balanced equation to satisfy the following statement:
\[\ce{Acid + Active metal -> Salt + hydrogen}\]
Classify the following solutions as acids, bases or salts.
Ammonium hydroxide, barium chloride, sodium chloride, sodium hydroxide, H2SO4 and HNO3
Choose the correct answer from the options given below:
Benzoic acid is used for/in/as
Which of the following statements is true for acids?
Match the substances in Column I with those in Column II.
| Column 1 | Column II | ||
| (a) | Tartaric acid | (i) | soap |
| (b) | Calcium hydroxide | (ii) | curd |
| (c) | Formic acid | (iii) | unripe mangoes |
| (d) | Sodium hydroxide | (iv) | ant’s sting |
| (e) | Lactic acid | (v) | lime water |
Complete the following equation.
Ca(OH)2 + ______ → ______ + H2O
A metal 'M' on reacting with dilute acid liberates a gas 'G'. The same metal also liberates gas 'G' when reacts with a base.
- Write the name of gas 'G'.
- How will you test the presence of this gas?
- Write chemical equations for the reactions of the metal with (1) an acid and (2) a base.
Explain the following:
\[\ce{H3PO3}\] is not a tribasic acid.
In a set of the given reactions, acetic acid yielded a product C.
\[\begin{array}{cc}
\phantom{}\ce{\underset{}{CH3COOH + PCl5} ->[][ ] \underset{}{A}->[C6H6][anhy.AlCl3 ] \underset{}{B}->[C2H5MgBr][Ether] \underset{}{C}}\\
\end{array}\]
Product C would be:
