HARD
10th Chhattisgarh Board
IMPORTANT
Earn 100

Which gas is usually displaced during reaction between acids and a metal? How will you test this gas? Take the example of magnesium metal to explain. 

Important Questions on Acids, Bases and Salts

HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 2 - Acids, Bases and Salts>Exercise>Q 10
When an eggshell is reacted with dilute hydrochloric acid, foaming is observed and an effervescent gas is produced. Once foaming subsides, a lighted agarbatti is extinguished on placing it inside test tube. Explain the following in the given activity: 
(a) Procedure or steps followed in the activity.
(b) Draw the picture of the experimental set-up.
(c) Write the balanced chemical equation of the reaction taking place.
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 2 - Acids, Bases and Salts>Exercise>Q 11
The pH of soil in Tikeshweri's field is 4.2. How can she control the pH of her soil so that she gets a good paddy crop?
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 2 - Acids, Bases and Salts>Exercise>Q 12
What is neutralisation reaction? Explain and give two examples. 
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 2 - Acids, Bases and Salts>Exercise>Q 13
Samaru added baking soda to raw milk so that its pH changed from 6 to 8. This milk will take longer to change into curd; why? 
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 2 - Acids, Bases and Salts>Exercise>Q 14
What is a salt? How is the nature of a salt determined? Take NH4NO3 and Na2CO3 as examples and explain.