Using diodes construct an OR gate and an AND gate?

NAND gate is-

The output of OR gate is 1

The output of OR gate is 1

Assertion: The logic gate NOT can be built using diode. Reason: The output voltage and the input voltage of the diode have 180^(@) phase difference.

Show with the help of a diagram, how you will obtain an AND gate using only NAND gates, (Truth table is not required)

Given below are symbols for some logic gates :- The XOR gate and NOR gate respectively are :-

How many NAND gates used to form AND gate.

Using several NAND gates, how can you obtain an AND gate ? Draw a labelled diagram in support of your answer.

Assertion: This circuit acts as OR Gate. Reason: Truth table for two input OR Gate is

The minimum NOR gates are required to make one NAND gate are