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10th Mizoram Board
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A solution turns red litmus blue, its pH is likely to be:

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Important Questions on Acids, Bases and Salts

MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 2 - Acids, Bases and Salts>EXERCISES>Q 2
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains:
MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 2 - Acids, Bases and Salts>EXERCISES>Q 3
10ml of a solution of NaOH is found to be completely neutralized by 8 ml of a given solution of HCl. If we take 20 ml of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralize it will be
HARD
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 2 - Acids, Bases and Salts>EXERCISES>Q 4
Which one of the following types of medicine is used for treating indigestion?
MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 2 - Acids, Bases and Salts>EXERCISES>Q 5
Write word equations and then balanced equations for the reaction taking place when
(i) Dilute sulphuric acid reacts with zinc granules.
(ii) Dilute hydrochloric acid reacts with magnesium ribbon.
(iii) Dilute sulphuric acid reacts with aluminium powder.
(iv) Dilute hydrochloric acid reacts with iron filings.
MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 2 - Acids, Bases and Salts>EXERCISES>Q 6
Compounds such as alcohols and glucose also contain hydrogen but are not categorized as acids. Describe an activity to prove it.
HARD
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 2 - Acids, Bases and Salts>EXERCISES>Q 7
Why does distilled water not conduct electricity, whereas rainwater does?
MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 2 - Acids, Bases and Salts>EXERCISES>Q 8
Why do acids not show acidic behaviour in the absence of water?
HARD
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 2 - Acids, Bases and Salts>EXERCISES>Q 9
Five solutions A, B, C, D, and E, when tested with universal indicator, showed pH as 4, 1, 11, 7 and 9, respectively. Which solution is
(i) Neutral?
(ii) Strongly alkaline?
(iii) Strongly acidic?
(iv) Weakly acidic?
(v) Weakly alkaline?
Arrange the pH in increasing order of hydrogen-ion concentration.