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प्रश्न
What property do acids and bases have in common? Explain it with an example.
उत्तर
Acids and bases are both electrolytes, which means they are both effective electrical conductors. Ions are created in aqueous solutions by both bases and acids. While bases produce hydroxide fons (OH-), acids release hydrogen ions (H+). Exothermic reactions take place when an acid or a base is dissolved in water.
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संबंधित प्रश्न
What do we observe on pouring acetic acid on red and blue litmus papers?
(A) Red litmus remains red and blue litmus turns red.
(B) Red litmus turns blue and blue litmus remains blue.
(C) Red litmus turns blue and blue litmus turns red.
(D) Red litmus becomes colourless and blue litmus remains blue.
When acids react with metal, which gas is liberated?
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains ______.
With the help of labelled diagrams, describe an activity to show that acids produce ions only in aqueous solutions.
A substance X which is used as an antacid reacts with dilute hydrochloric acid to produce a gas Y which is used in one type of fire-extinguisher. Name the substance X and gas Y. Write a balanced equation for the chemical reaction which takes place.
Answer the following question:
What is the universal indicator? Does Mg (OH)2 react with sodium hydroxide? If not, why?
A solution of NaCl
(i) will turn red litmus blue
(ii) will turn pH paper green
(iii) will turn blue litmus red
(iv) will not affect litmus
Which of the following salts does not contain any water of crystallisation?
______ change the colour of the indicators.
______ & ______ metals do not react with HCl or HNO3.
