HARD
10th ICSE
IMPORTANT
Earn 100

When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved which is used as rocket fuel. Name the gas evolved. Write the chemical equation of the reaction involved and also write a test to detect the gas formed. 

Important Questions on Acids, Bases and Salts

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>Practice Questions>Q 2
Why does HClgas turn 'wet' blue litmus paper to red whereas there is no change in the colour of 'dry' litmus paper?
HARD
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>Practice Questions>Q 4
Why is HClis a stronger acid than acetic acid. Explain.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>Practice Questions>Q 5
Solution of sulphuric acid conducts electricity whereas alcohol does not. Give reason.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>Practice Questions>Q 6
Why all hydrogen-containing compounds such as alcohols and glucose are not acids?
HARD
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>Practice Questions>Q 1
State what does pH of a solution signify? Three solutions A, B and C have pH values of 6,5 and 10 respectively. Which of the solutions is highly acidic? Which solution will turn red litmus blue? 
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>Practice Questions>Q 3
Why is an aqueous solution of sodium chloride neutral but an aqueous solution of sodium carbonate basic? 
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>Practice Questions>Q 5
How concentrated sulphuric acid can be diluted? Describe the process. 
HARD
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>Practice Questions>Q 7

Complete the following table with the acids and bases used to form particular salt. Also given the idea of whether the acid/ base is strong or weak and nature of the salt. 

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