MEDIUM
10th ICSE
IMPORTANT
Earn 100

Solution A gives red colour when a drop of methyl orange is added to it. On the other hand, solution B gives pink colour when a drop of phenolphthalein indicator is added to it. What type of solutions are A and B? What is the pH value of A and B?

Important Questions on Acids, Bases and Salts

EASY
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 5
What is the colour of phenolphthalein with (a) acidic solution (b) basic solution?
EASY
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 6
What is the pH of milk of magnesia.
EASY
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 6
What is the pH of lemon juice.
EASY
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 6
What is the pH of the blood.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 6
Write the pH of gastric juice.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 7
What do you observe, on adding dilute hydrochloric acid to sodium bicarbonate placed in a test tube?
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 7
What do you observe, on adding dilute hydrochloric acid to zinc metal kept in a test tube?
HARD
10th ICSE
IMPORTANT
Science Chemistry>Chapter 2 - Acids, Bases and Salts>ASSESSMENT>Q 8
Crystals of a substance changed their colour on heating in a closed test tube but regained it after some time when they were allowed to cool down. Name the substance and write its formula and explain the phenomenon involved.