Chapter 2 : Acids, Bases and Salts
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Which substance is formed when an acid reacts with a base?
2 / 50
The pH paper is used to measure:
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Common salt is chemically known as:
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Which of the following compounds is used in fire extinguishers?
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A solution with pH 9 is:
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Which of the following is an olfactory indicator?
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Which acid is used in soft drinks?
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The formula of bleaching powder is:
9 / 50
Which of the following is not a base?
10 / 50
The process of dissolving an acid in water is highly:
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Which acid is called mineral acid?
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Which of the following has pH more than 7?
13 / 50
The colour of turmeric in basic solution becomes:
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Which acid is found in tamarind?
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The reaction of acid with metal generally produces:
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Which salt is used for softening hard water?
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Plaster of Paris is chemically known as:
18 / 50
Which of the following turns red litmus blue?
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Which acid is present in curd?
20 / 50
The formula of washing soda is:
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Which of the following is a neutral substance?
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Which gas is evolved when an acid reacts with a metal carbonate?
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Which of the following substances is used in whitewashing?
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The colour of methyl orange in acidic medium is:
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Which acid is used in car batteries?
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The pH scale ranges from:
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Which salt is obtained from hydrochloric acid and sodium hydroxide?
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Bases produce which ion in aqueous solution?
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Acids produce which ion in aqueous solution?
30 / 50
Which indicator gives pink colour in basic solution?
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The common name of calcium oxychloride is:
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Which of the following is not an acid?
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The reaction between an acid and a base is called:
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Which of the following is used to treat acidic soil?
35 / 50
Tooth decay starts when the pH of mouth is lower than:
36 / 50
Which acid is present in ant stings?
37 / 50
The chemical name of baking soda is:
38 / 50
Which of the following salts is used in baking?
39 / 50
The colour of phenolphthalein in acidic solution is:
40 / 50
Sodium hydroxide is a:
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Which of the following is a strong acid?
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The pH of pure water at 25°C is:
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Which acid is found in lemon?
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Bases are bitter in taste and feel:
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Which of the following is a natural indicator?
46 / 50
Which gas is released when zinc reacts with dilute hydrochloric acid?
47 / 50
A substance with pH value 2 is:
48 / 50
Which acid is present in vinegar?
49 / 50
The chemical formula of hydrochloric acid is:
50 / 50
Which of the following substances turns blue litmus red?
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