Question

17. Suhana takes three beakers A, B and C filled with aqueous solutions of glucose, alcohol and
hydrochloric acid respectively as shown in the following figure :
Battery Bulb
Switch
Battery Bulb
# B Switch
Battery Bulb
Switch
Beaker
Graphite rod
Beaker
Graphite rod
Dil. Ha
Beaker
Graphite rod
Alcohol
Glucose
С
B which of the following are present in a dilute aq solution of hydrochloric acid

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Answer 1

Answer:

Explanation:

(i) Bulb A and B do not glow but bulb C glows.

(ii) Glucose and alcohol solutions do not conduct electricity as they do not have ions.

Dil. HCI contains ions so the flow of ions is responsible for the flow of current.

(iii) After replacement, bulb glows in B as NaOH solution contains ions (Na+ and OH- ions).