Which of the following has zero inductive effect?

From the following,identify the groups that exhibit negative resonance $(-R)$ effect when attached to a conjugated system: $(A)$ formyl,$(B)$ amino,$(C)$ alkoxy,$(D)$ cyano,$(E)$ nitro

Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?

What is the resonance effect? Write about its types. Or,what is the positive and negative resonance effect? Explain with examples.

Explain the inductive effect with a suitable example.

Match the following electronic effects in List-$I$ with their corresponding examples or representations in List-$II$.

List-$I$	List-$II$
$(A)$ Resonance	$(I)$ $C=C + H^+ \rightarrow C^+-C-H$
$(B)$ Inductive effect	$(II)$ $H-CH_2-CH_2^+ \leftrightarrow H-CH_2=CH_2^+$
$(C)$ Electromeric effect	$(III)$ $C_6H_6$
$(D)$ Hyperconjugation	$(IV)$ $CH_3-Z \rightarrow CH_3^- + Z^+$
	$(V)$ $CH_3-CH_2-CH_2Cl$