Acids, Bases and Salts (MCQs-2)
Class 10 - Chemistry
Q1: Which one at the following is acidic?
(a) Lemon juice
(b) tomatoes
(c) Milk
(d) All of these
Q2: Which one of the following will turn red litmus blue?
(a) Vinegar
(b) Baking soda solution
(c) Lemon juice
(d) Soft drinks
Q3: Which one of the following will turn blue litmus red
(a) Vinegar
(b) Lime water
(c) baking soda solution
(d) Washing soda solution
Q4: Methyl orange is -
(a) Pink in acidic medium, yellow 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.
Q5: Lime water is—
(a) CaO
(b) Ca(OH)₂
(c) CaCO₃
(d) CaCl₂
Q6: The nature of calcium phosphate is present in tooth enamel is—
(a) Basic
(b) Amphoteric
(c) Acidic
(d) Neutral.
Q7: Which of the following salts has no water of crystallization?
(a) Blue vitriol
(b) Washing soda
(c) Baking soda
(d) Gypsum
Q8: 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) Take part in reaction with NaOH
Q9: The difference of molecules of water in gypsum and POP is
(a) 5/2
(b) 2
(c) 3/2
(c) 1/2
Q10: The chemical formula of caustic potash is
(a) NaOH
(b) Ca(OH)₂
(c) NH₄OH
(d) KOH
Answers:
1: (d) All of these
2: (b) Baking soda solution
3: (a) Vinegar
4: (a) Pink in acidic medium, yellow in basic medium
5: (b) Ca(OH)₂
6: (a) Basic
7: (c) Baking soda
8: (a) Absorb moisture present in soda lime
9: (c) 3/2
10: (d) KOH
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EASY!!!!!
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