An indicator prepared from artificial substances is known as synthetic indicator. Which of the following is/are synthetic indicators?

There are many different properties of acids. Which of the following is not a property of acids?

Which of the following statements is/are false?

a. An indicator is a dye that changes colour when it is put into an acid or a base. b. Litmus is the most common indicator used for testing acids and bases in the laboratory. c. An acid turns red litmus to blue.

A base that is partially ionised in water is a weak base. Which of the following are a weak base?

Which of the following statements is/are false?

a. Rain water dissolves carbon dioxide gas from air and forms carbonic acid. b. The aqueous solution of an acid conducts electricity due to the presence of charged particles in it. c. Acids show acidic behaviour in the absence of water.

Bases are used in the industry for manufacturing various substances. Which of the following bases is used in the manufacture of rayon?

Which of the following statements is/are false?

a. Non-metal oxides are acidic in nature. b. In pure water, the concentration of hydrogen ions and hydroxide ions are equal. c. The pH of a solution is directly proportional to the concentration of hydrogen ions in it.

A base that is soluble in water without any chemical reaction is called an alkali. Which of the following is not an alkali?

Which of the following statements is/are false?

a. The salts of hydrochloric acid are called 'chlorides'. b. A solution of pH 14 will be a weaker base than another solution of pH 10. c. Sulphurous acid is a weak acid because it ionises partially in water to form a small amount of hydrogen ions.

Chloroform is used in hospitals by the doctors. Which of the following products of sodium chloride is used in the manufacturing of chloroform?

When a wasp stings a person, it injects an alkaline liquid into the skin. It can be neutralised by rubbing a mild acid like

Which of the following chemical compounds of common salt has a mild, non-corrosive base and is mildly alkaline in water?

Which of the following statements is/are false?

a. Sodium hypochlorite is a bleaching agent that is used in making household bleaches. b. The solution of washing soda in water is alkaline that turns blue litmus red. c. Washing soda is one of the few metal carbonates that are soluble in water.

Which of the following statements is/are false?

a. An ant's sting injects methanoic acid into the skin of a person causing burning pain. b. Antacids are a group of mild bases having no toxic effect on the human body. c. Calcium hydroxide is added to the acidic lake water to neutralise the acid that comes from acid rain.

The water of crystallisation imparts colour to the salts. Which of the following salts is imparted blue colour due to the water of crystallisation?

An acid that is partially ionised in water is a weak acid. Which of the following acids is a weak acid?

a. Sulphuric acid b. Carbonic acid c. Nitric acid d. Sulphurous acid

Iron sulphate heptahydrate contains _______ molecules of water of crystallisation per formula unit.

If a solution is neither acidic nor basic, it will turn the universal indicator

When fresh milk (having pH of 6) is changed into curd, its pH will

Acids are never stored in metal containers because