Acids, Bases and Salts Sample Questions for Class 7
Question 1
Arrange following acids from least reactive to most reactive.
A)Hydrochloric acid
B) Nitric acid
C) Acetic acid
D)Sulphuric acid
A. CBAD
B. CABD
C. CBDA
D. CDBA
Question 2
People of village was clothes in the river water.
So water will have more of ______.
A. Base
B. Acid
C. Neither A nor B
D. Both a and b
Question 3
To make common salt which acid and base should be combined?
A. Hydrochloric acid and sodium hydroxide
B. Carbonic acid and potassium hydroxide
C. Nitric acid and magnesium hydroxide
D. Acetic acid and ammonium hydroxide
Question 4
Where do you find malic acid?
A. Grapes
B. Raw mangoes
C. Pineapples
D. Apples
Question 5
China rose water indicator will turn _____ in acid and _____ in base.
A. Dark pink and green
B. Red and yellow
C. Orange and blue
D. Orange and colourless