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Question

Which of the following statements is/are true?
Statement 1: Heat conductors allow heat to pass through them easily.
Statement 2: All plastics are good conductors of heat.

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

Only statement 1

Let's analyze each statement:

Statement 1: Heat conductors allow heat to pass through them easily.

This statement is true. Heat conductors, by definition, are materials that readily transmit thermal energy (heat). Metals are excellent examples of heat conductors. The ease with which heat passes through a material is quantified by its thermal conductivity.

Statement 2: All plastics are good conductors of heat.

This statement is false. Plastics, in general, are poor conductors of heat; they are good insulators. This property is why they are frequently used in applications where heat insulation is required, such as cookware handles or electrical insulation. While some specialized plastics might have different properties, the general statement is incorrect.

Therefore, only statement 1 is true.

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