Which of the following statement is true if alcohol is replaced with NaOH solution * (a) Bulb glows in alcohol but not in NaOH solution (b) Bulb will glow in NaOH solution but not in alcohol (c) Bulb does not glow in alcohol and neither in NaOH solution (d) Bulb glows in NaOH solution as well as in alcohol
Answers
Refer to pic attached below.
which of the following statement is true if alcohol is replaced with NaOH solution ?
- (a) Bulb glows in alcohol but not in NaOH solution.
- (b) Bulb will glow in NaOH solution but not in alcohol.
- (c) Bulb does not glow in alcohol and neither in NaOH solution.
- (d) Bulb glows in NaOH solution as well as in alcohol.
Answer : option (D) Bulb will glow in NaOH solution but not in alcohol.
explanation : NaOH is a strong base. and we know, base is ionic in nature. when we dissolve it in water, it will produce ions Na⁺ and OH⁻ . which means, current can flows through NaOH solution. hence, bulb glows in NaOH.
alcohol is a polar covalent compound. so it can dissolves in water because of the formation of hydrogen bond between them. but current can't flow through it. because alcohol is covalent compound and a covalent compound is formed by the sharing of electrons. so it can't be broken into ions. hence bulb doesn't glow in alcohol.
therefore the correct option is (B) bulb glows in alcohol but not in alcohol.