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CBSE Class 10 Chemistry Acids Bases and Salts (Hard)
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Acids react with metal carbonates to librate_________gas
Lime water turns milky when carbon dioxide is passed due to the formation of_______.
A calcium compound reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Identify the compound and the gas evolved.
1. An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change ?
In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus was set up Which among the following statement(s) is (are) correct?
What happens when a solution of an acid is mixed with a solution of a base in a test tube ?
(i) The temperature of the solution increases.
(ii) The temperature of the solution decreases.
(iii) The temperature of the solution remains the same.
(iv) Salt formation takes place.
Sodium carbonate is a basic salt because it is a salt of
Identify the correct representation of reaction occurring during chlor-alkali
Which of the following gives the correct increasing order of acidic strength ?
Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved?
(i) It turns lime water milky
(ii) It extinguishes a burning splinter
(iii) It dissolves in a solution of sodium hydroxide
(iv) It has a pungent odour