Acids Bases and Salts Chapter No. 5
Class.9 MCQ
Science and Technology
Maharashtra State Board
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1 |
Which one of the following is acidic? |
|
A |
Lemon juice |
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B |
Tomatoes |
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C |
Milk |
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D |
All |
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ANS |
All |
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2 |
Which one of the following will turn red litmus blue? |
|
A |
Vinegar |
|
B |
Lemon juice |
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C |
Baking soda solution |
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D |
Soft drinks |
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ANS |
Lemon juice |
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3 |
Which one of the following Will turn blue litmus red? |
|
A |
Vinegar |
|
B |
Lime water |
|
C |
Baking soda solution |
|
D |
Washing soda solution |
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ANS |
Vinegar |
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4 |
Methyl orange is? |
|
A |
Pink in acidic medium, pink in basic medium |
|
B |
Yellow in acidic medium, pink in basic medium |
|
C |
Colourless in acidic medium, pink in basic medium |
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D |
Pink in acidic medium, colourless in basic medium |
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ANS |
Pink in acidic medium, pink in basic medium |
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5 |
Lime water is? |
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A |
Cao |
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B |
Ca (OH)2 |
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C |
Caco3 |
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D |
Cacl2 |
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ANS |
Ca (OH)2 |
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6 |
The nature of calcium phosphate is present in tooth enamel is? |
|
A |
Basic |
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B |
Amphoteric |
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C |
Acidic |
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D |
Neutral |
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ANS |
Basic |
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7 |
Which of the following salts has no water of crystallization? |
|
A |
Blue vitrial |
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B |
Washing soda |
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C |
Baking soda |
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D |
Gypsum |
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ANS |
Baking soda |
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8 |
The function of quick lime in soda lime mixture is to? |
|
A |
Absorb moisture present in soda lime |
|
B |
Increase the efficiency of soda lime |
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C |
Increase the PH of soda lime |
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D |
decrease the pH of soda lime |
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ANS |
Absorb moister present in soda lime |
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9 |
The PH of a solution of HCL is 4. This shows that the molarity of
the solution is? |
|
A |
4.0 M |
|
B |
0.4 M |
|
C |
0.0001 M |
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D |
0.001 M |
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ANS |
0.4 M |
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10 |
The different of molecules of water in gypsum and pop is? |
|
A |
5/2 |
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B |
2b |
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C |
3/2 |
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D |
½ |
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ANS |
3/2 |
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11 |
Which of the following does not form an acidic salt? |
|
A |
Phosphoric acid |
|
B |
Carbonic acid |
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C |
Hydrochloric acid |
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D |
Sulphuric acid |
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ANS |
Carbonic acid |
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12 |
The chemical formula of caustic potash is? |
|
A |
NaoH |
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B |
Ca (OH)2 |
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C |
Nh4OH |
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D |
KOH |
|
ANS |
KOH |
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13 |
Aqua regia is being prepared by which of the given acids? |
|
A |
Nitric acid and Hydrochloric acid |
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B |
Citric acid and Nitric acid |
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C |
Sulphuric acid and Hydrochloric acid |
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D |
Sulphuric acid and citric acid |
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ANS |
Nitric acid and Hydrochloric acid |
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14 |
What does the PH value denote? |
|
A |
Purity of milk |
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B |
Analysing the nature of a solution |
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C |
Checking the intensity of an earthquake |
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D |
It is used for developing photographic negatives |
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ANS |
Analysing the nature of a solution |
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15 |
When a PH value of a solutions shows 7, then a solution is? |
|
A |
Acidic |
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B |
Basic |
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C |
Neutral |
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D |
None of these |
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ANS |
Neutral |
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16 |
Which of the following PH value shown by Acids? |
|
A |
7 |
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B |
9 |
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C |
8 |
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D |
6 |
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ANS |
6 |
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17 |
When a given solution turns red litmus blue, it indicates? |
|
A |
The solution is alkaline |
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B |
The solution is acidic |
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C |
The solution is neither acidic nor basic |
|
D |
None of the above |
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ANS |
The solution is alkaline |
|
18 |
Which of the following is present in a maximum amount in acid
rain? |
|
A |
Hydrochloric acid |
|
B |
Sulphuric acid |
|
C |
Nitric acid |
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D |
Ammonium acid |
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ANS |
Sulphuric acid |
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19 |
An aqueous solution of copper sulphate solution shows an acidic
character, what does it mean? |
|
A |
It undergoes photolysis |
|
B |
It undergoes dialysis |
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C |
It undergoes electrolysis |
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D |
It undergoes hydrolysis |
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ANS |
It undergoes hydrolysis |
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20 |
Sodium chloride is a product of? |
|
A |
Strong acid and Strong base |
|
B |
Strong acid and Weak base |
|
C |
Strong base and Weak acid |
|
D |
Weak acid and Weak base |
|
ANS |
Strong acid and Strong base |
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21 |
Which of the following majorly present in the ocean? |
|
A |
Calcium carbonate |
|
B |
Magnesium sulphate |
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C |
Sodium chloride |
|
D |
Potassium |
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ANS |
Sodium chloride |
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22 |
What is the chemical name of baking soda? |
|
A |
Calcium carbonate |
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B |
Potassium chloride |
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C |
Sodium bicarbonate |
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D |
Hydrogen chloride |
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ANS |
Sodium bicarbonate |
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23 |
Which of the given acids does not contain oxegen? |
|
A |
Sulphuric Acid |
|
B |
Nitric Acid |
|
C |
Hydrochloric Acid |
|
D |
None of these |
|
ANS |
Hydrochloric Acid |
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24 |
What is the nature of soda water? |
|
A |
Alkaline |
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B |
Acidic |
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C |
Oxidising |
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D |
Reducing |
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ANS |
Acidic |
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25 |
What is Neela thotha that refers to? |
|
A |
Potassium chloride |
|
B |
Copper sulphate |
|
C |
Hydrochloric acid |
|
D |
Sodium hydroxide |
|
ANS |
Copper sulphate |
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26 |
What is the common name of sodium hydroxide? |
|
A |
Neela thotha |
|
B |
Kala azar |
|
C |
Caustic soda |
|
D |
None of these |
|
ANS |
Caustic soda |
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27 |
What are antacids? |
|
A |
Salts |
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B |
Acids |
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C |
Suffer |
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D |
Bases |
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ANS |
Acids |
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28 |
What is the chemical name of Epsom salt? |
|
A |
Potassium chloride |
|
B |
Sulphur dioxide |
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C |
Magnesium sulphate |
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D |
Sodium carbonate |
|
ANS |
Sulphur dioxide |
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29 |
What is the chemical name of bleaching powder? |
|
A |
Calcium oxychloride |
|
B |
Ammonium carbonate |
|
C |
Calcium carbonate |
|
D |
Calcium hydroxide |
|
ANS |
Calcium oxychloride |
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30 |
Which of the following were used to deveiop photographic plates? |
|
A |
Silver iodide |
|
B |
Sodium thiosulphate |
|
C |
Hydrochloric acid |
|
D |
Bromine |
|
ANS |
Sodium thiosulphate |
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