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
Which of the following is not an alkali?
A. Sodium hydroxide
B. Silver hydoxide
C. Ammonium hydroxide
D. Magnesium hydroxide
Question 3
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
Question 4
Which of the following is mineral acid?
A. Tartaric acid
B. Nitric acid
C. Amino acid
D. Acetic acid
Question 5
Which of the following statement is incorrect about acid?
A. Acid is sour in taste
B. Acid turns blue litmus paper red
C. Water should be added to acid with constant stir
D. Dilution of acid is highly exothermic