Acid bases and salts

Front

Characteristics of a substance: Very bitter taste, Feels slippery to the touch, Produces OH- ions when dissolved in water. In what category would the substance be classified?

Back

base

Front

HNO₃

Back

an acid

Front

Releases hydrogen ion in an aqueous solution.

Back

acid

Front

KOH is ...

Back

a base

Front

Which of the following statements is correct?
Options: Blue litmus paper turns red when placed in a base., Red litmus paper turns blue when placed in a base., Blue litmus paper stays blue when placed in an acid., Red litmus paper stays red when placed in a base.

Back

Red litmus paper turns blue when placed in a base.

Front

What happens when a solution of an acid is mixed with a solution of a base in a test tube? (i) Temperature of the solution decreases (ii) Temperature of the solution increases (iii) Temperature of the solution remains the same (iv) Salt formation takes place

Back

Temperature of the solution increases and salt formation takes place

Front

Tomato is a natural source of which acid?

Back

Oxalic acid

Front

If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?

Back

Wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate.

Front

Which phenomena occur when a small amount of acid is added to water? (i) dilution (ii) neutralization (iii) salt formation (iv) ionization

Back

(i) dilution and (iv) ionization

Front

Is pure water acidic, basic, or neutral?

Back

Neutral