Q22 of 48 Page 9

Which of the following is not a mineral acid?

Citric acid is not a mineral acid. It is an organic acid or edible acid that is derived from organic compounds.


Note:


Mineral acids or inorganic acids are generally prepared from inorganic compounds such as minerals present in the earth’s crust. For examples, HCl (hydrochloride acid), H2SO4 (sulphuric acid) and HNO3 (nitric acid) are mineral acids. These acids dissolve in water to produce H+ ions.


Edible acids or organic acids are produced by plants or animals, for example, acetic acid, citric acid and lactic acid are edible acids. These acids are corrosive in nature.

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20

In an attempt to demonstrate electric conductivity through an electrolyte, the following apparatus (figure) was set up.



Which among the following statement(s) is/are correct?


(i) Bulb will not glow because electrolyte is not acidic.


(ii) Bulb will glow because NaOH is a strong base and furnishes ions for conduction.


(iii) Bulb will not glow because circuit is incomplete.


(iv) Bulb will not glow because it depends upon the type of electrolytic solution.

 21

Which of the following is used for dissolution of gold?

 23

Which among the following is not a base?

 24

Which of the following statements is not correct?