MEDIUM
10th CBSE
IMPORTANT
Earn 100

What happens when zinc granules are heated with sodium hydroxide solution? Write equation of the reaction which takes place.

Important Questions on Acids, Bases and Salts

EASY
10th CBSE
IMPORTANT
NEW ERA CHEMISTRY Textbook for Class X>Chapter 2 - Acids, Bases and Salts>MOCK TEST>Q 10
What reaction takes place when sodium bicarbonate is heated?
EASY
10th CBSE
IMPORTANT
NEW ERA CHEMISTRY Textbook for Class X>Chapter 2 - Acids, Bases and Salts>MOCK TEST>Q 11
What is the effect of increasing H+ ion concentration on the pH value?
EASY
10th CBSE
IMPORTANT
NEW ERA CHEMISTRY Textbook for Class X>Chapter 2 - Acids, Bases and Salts>MOCK TEST>Q 12
Tooth enamel is one of the hardest substance in our body. How does it undergo damage due to eating chocolates and sweets? What should we do to prevent it?
MEDIUM
10th CBSE
IMPORTANT
NEW ERA CHEMISTRY Textbook for Class X>Chapter 2 - Acids, Bases and Salts>MOCK TEST>Q 13
Explain briefly the principle of soda-acid fire extinguisher.
MEDIUM
10th CBSE
IMPORTANT
NEW ERA CHEMISTRY Textbook for Class X>Chapter 2 - Acids, Bases and Salts>MOCK TEST>Q 13
Why a tarnished copper vessel regain its shine when rubbed with lemon?
MEDIUM
10th CBSE
IMPORTANT
NEW ERA CHEMISTRY Textbook for Class X>Chapter 2 - Acids, Bases and Salts>MOCK TEST>Q 14
A white powder is added while baking breads and cakes to make them soft and fluffy. What is the name of the powder? What are the main ingredients in it? What are the functions of each ingredient?
MEDIUM
10th CBSE
IMPORTANT
NEW ERA CHEMISTRY Textbook for Class X>Chapter 2 - Acids, Bases and Salts>MOCK TEST>Q 14
A compound which is prepared from gypsum has the property of hardening when mixed with proper quantity of water. Identify the compound. Write chemical equation to prepare the compound. Write one important use of the compound.
MEDIUM
10th CBSE
IMPORTANT
NEW ERA CHEMISTRY Textbook for Class X>Chapter 2 - Acids, Bases and Salts>MOCK TEST>Q 15
Shobit takes cold drinks everyday. Cold drinks contain sugar and carbon dioxide which are dissolved in water along with preservative like sodium benzoate and carbonic acid. These dissolved substances present in cold drinks can cause tooth decay. It may also cause hyper acidity and weaken our bones. Shobit's teacher advised him to take nimbu pani (lemonade) and fresh fruit juice instead of cold drinks.
(i) Which acid is present in cold drinks?
(ii) What are the harmful effect of taking cold drinks?
(iii) What values are conveyed by the teacher when she suggested Shobit to take nimbu pani (lemonade) and fresh fruit juices instead of cold drinks?