Science : Ch 02 – Acids Bases and Salts

Which of the following solutions in water does not conduct electricity?

To preserve tooth decay we are advised to brush our teeth regularly. The nature of the toothpaste commonly used is:

identical volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with a pH paper. What would be the colour obtained?

Which of the following statements is accurate about an aqueous solution of an acid and a base?

1. Higher the pH, stronger the acid
2. Higher the pH, weaker the acid
3. Higher the pH, stronger the base
4. Lower the pH, weaker the base

What will take place when the solution of an acid is blend with the solution of a base in a test tube?

1. The temperature of the solution increases
2. The temperature of the solution decreases
3. The temperature of the solution remains the same
4. Salt formation takes place

Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the following declaration are true about the gas evolved?

1. It turns lime water milky
2. It extinguishes a burning splinter.
3. It dissolves in a solution of sodium hydroxide.
4. It has a pungent odour

Name the acid along present in ant sting

Antacid are

What types of ions are formed when a base is dissolved in water ?

The pH of pure water is

The chemical used in manufacture of soaps

Hydrogen is used in manufacture

Common name calcium sulphate hemihydrate

Which of the following statements is true for acids?

The other name of methanoic acid is