Question

Sunil set up an experiment as shown in the figure to test a few solutions which contain hydrogen but are not categorized as acids.

Which of the given observations are correct? 

(i) When a solution of glucose is put, the bulb does not glow. 

(ii) When a solution of ethanol is put, the bulb does not glow. 

(iii) When a solution of hydrochloric acid is put, the bulb glows. 

(iv) When a solution of sodium hydroxide is put, the bulb does not glow.

(A) (i), (ii) and (iv) only 

(B) (i), (ii) and (iii) only 

(C) (i) and (ii) only 

(D) (iii) and (iv) only

Answer 1

Correct option  (B) (i), (ii) and (iii) only  

Explanation:

Glucose and ethanol do not conduct electricity while NaOH and HCI conduct electricity as they produce ions in the solution.