Answer the question given below.
 
Take solutions of glucose, alcohol, hydrochloric acid, sulphuric acid, sodium hydroxide etc. Make a circuit connect and pour some dilute \(HCI\) into the beaker and switch on the current. Repeat the process with dilute sulphuric acid, glucose and alcohol solutions. 
 
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Circuit connection with dilute hydrochloric acid
 
a. What is the reason the bulb glows in the case of acids like \(HCl\) and \(H_2SO_4\)?

b. Why glucose and alcohol doesn't conduct electricity? 

c. Why do acids not show acidic behaviour in the absence of water?
 
d. Why do aqueous solutions of acids conduct electricity?