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प्रश्न
State some of the uses of mineral acids in industry.
उत्तर
Uses of mineral acids in industry:
- Mineral acids are used in many sectors of the chemical industry for the synthesis of various chemicals.
- Dilute solutions of hydrochloric acid are used for removing the deposits from inside boilers, with precautions to prevent the corrosion of the boilers by the acid.
- They are also used in the processing of leather, purification of common salt, construction of buildings, etc.
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संबंधित प्रश्न
Name one animal and one plant whose stings contain formic acid (or methanoic acid).
One of the following is not an organic acid. This is:
(a) ethanoic acid
(b) formic acid
(c) citric acid
(d) carbonic acid
One of the following is a medicine for indigestion. This is:
(a) sodium hydroxide
(b) manganese hydroxide
(c) magnesium hydroxide
(d) potassium hydroxide
Write chemical names from given formulae.
H2SO4
What do you understand by the strength of an acid? On what factors does the strength of an acid depend?
Fill in the blank
Vinegar is the source of ________ acid.
Choosing the correct words given in brackets, complete the sentence given below:
An acid is a compound which, when dissolved in water gives ______ ( hydronium / hydroxide) ions as the only ______ (positive/negative) ions.
Fill in the missing data in the following table
| Name of the salt | Formula | Salt obtained from | ||
| Base | Acid | |||
| (i) | Ammonium chloride | NH4Cl | NH4OH | ______ |
| (ii) | Copper sulphate | ______ | ______ | H2SO4 |
| (iii) | Sodium chloride | NaCl | NaOH | ______ |
| (iv) | Magnesium nitrate | Mg(NO3)2 | ______ | HNO3 |
| (v) | Potassium sulphate | K2SO4 | ______ | ______ |
| (vi) |
Calcium nitrate | Ca(NO3)2 | Ca(OH)2 | ______ |
Which of the following metal does not react with sodium hydroxides?
Complete the following equation.
CaO + H2SO4 → ______ + H2O
