acid base and salt 10std

What happens when a solution of an acid is mixed with a solution of a base in a test tube?

• temperature of the solution increases 
• temperature of the solution decreases
• temperature remains constant
• no reaction

Which of the following values would represent the pH of a strong base?

• 1

• 8

• 7

• 13

Calcium phosphate is present in tooth enamel - its nature is

• basic
• acidic 
• neutral
• amphoteric

Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the statement is true about the gas evolved

• it turns lime water milky
• it burns with a pop sound
• it changes the soln colorless
• it has a pungent smell

What happens when a solution of an acid is mixed with a solution of a base in a test tube?

• temperature of the solution increases 
• temperature of the solution decreases
• temperature remains constant
• no reaction

Calcium phosphate is present in tooth enamel - its nature is

• basic
• acidic 
• neutral
• amphoteric

Which of the following values would represent the pH of a strong base?

• 1

• 8

• 7

• 13

Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the statement is true about the gas evolved

• it turns lime water milky
• it burns with a pop sound
• it changes the soln colorless
• it has a pungent smell

Which of the following is acidic in nature?

• limewater
• humanblood
• lime juice
• antacid

Complete the definition below:

Acids are....

• hydrogen donors.

• hydrogen acceptors.

• proton donors.

• proton acceptors.