MCQ for Class 10 Science Chapter 2 Acid Bases and Salts

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

• Higher the pH, stronger the acid

• Higher the pH, weaker the acid

• Lower the pH, stronger the base

• Lower the pH, weaker the base

Which one of the following is acidic?

• Lemon juice

• Tomatoes

• Milk

• All

Which element is always present in Arrhenius acid?

• Oxygen

• Nitrogen

• Hydrogen

• None of these

Which one of the given is true, if a substance has a pH value of 7?

• The substance is a base

• The substance is a acid

• The substance is a neutral substance

• Either (1) or (2)

Alkalis are

• acids, which are soluble in water

• acids, which are insoluble in water

• bases, which are insoluble in water

• bases, which are soluble in water

Which one of the given acids is used in the treatment of bone marrow and scurvy diseases?

• Acetic acid

• Hydrochloric acid

• Ascorbic acid

• Nitric acid

Lime water is

• CaO

• Ca(OH)2

• CaCO3

• CaCI2

Which one of the following will turn blue litmus red?

• Vinegar

• Lime water

• Baking soda solution

• Washing soda solution

A strong acid:

• Completely gets ionized in water

• Partially gets ionized in water

• Do not get ionized in water

• All the these

Sodium hydroxide is a

• weak base

• weak acid

• strong base

• strong acid