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