EASY
10th CBSE
IMPORTANT
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Which of the following is treated with chlorine to obtain bleaching powder ?

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Important Questions on Acids, Bases And Salts

EASY
10th CBSE
IMPORTANT
Plaster of Paris is prepared by heating one of the following to a temperature of 100°C. This is-
EASY
10th CBSE
IMPORTANT
A salt whose aqueous solution will have a pH of more than 7 will be
EASY
10th CBSE
IMPORTANT
A salt is dissolved in water and the pH of this salt solution is measured with a universal indicator paper. If the pH of solution is less than 7, the salt is most likely to be
EASY
10th CBSE
IMPORTANT
Which of the following salts will give an aqueous solution having pH of almost 7?
MEDIUM
10th CBSE
IMPORTANT
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn blue litmus red?
MEDIUM
10th CBSE
IMPORTANT
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn red litmus blue?
HARD
10th CBSE
IMPORTANT
The metal salt A is blue in colour. When salt A is heated strongly over a burner, then a substance B is eliminated and a white powder C is left behind. When a few drops of a liquid D are added to powder C, it becomes blue again. What could be A,B,C and D?
MEDIUM
10th CBSE
IMPORTANT
When the concentrated aqueous solution of substance X is electrolysed, then NaOH, Cl2 and H2 are produced. Name the substance X. What is the special name of this process?