Which among the following is a poor conductor of heat and electricity?(A) Melamine(B) Bakelite(C) Both A and B(D) None of the above

To determine which of the options is a poor conductor of heat and electricity, let's analyze each material:

Melamine:

Melamine is a thermosetting plastic that is known for its heat resistance and electrical insulating properties. It does not conduct heat or electricity well, making it a poor conductor.
Bakelite:

Bakelite is another thermosetting plastic, commonly used in electrical insulators and various household items. It is also known for its poor conductivity of heat and electricity, serving as an excellent insulator.
Now, let's evaluate the options:

(A) Melamine: Poor conductor of heat and electricity.
(B) Bakelite: Poor conductor of heat and electricity.
(C) Both A and B: Since both materials are poor conductors, this option is correct.
(D) None of the above: This is incorrect since both materials are poor conductors.
Conclusion:
The correct answer is (C) Both A and B.