Question

Assertion : A voltaic cell spontaneously converts chemical energy into electrical energy.

Reason : A voltaic cell needs an externally applied current to work.

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  
• B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
  
• C. Assertion is true but Reason is false
• D. Assertion is false but Reason is true
• E. Both Assertion and Reason are false

Answer 1

Answer: (C)

Assertion is true but Reason is false

Statement I is correct whereas statement II is false.

Voltaic Cells :

An electrochemical cell which causes external electric current flow can be created using any two different metals since metals differ in their tendency to lose electrons.

Zinc more readily loses electrons than copper, so placing zinc and copper metal in solutions of their salts can cause electrons to flow through an external wire which leads from the zinc to the copper.

Hence the correct option is C.