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.
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.
According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?
According to the ISO-A size series, what is the designation of a trimmed sheet with dimensions 297 mm × 420 mm?
Which of the following noise levels is considered potentially harmful to human health if experienced over extended periods?
A cube with a mass of 5.74 g occupies a volume of 1.2 cm³. The density (in g/cm³) expressed with the correct number of significant figures is ______.
Gaskets, seals and spacers are made using:
In a velocity-time graph, the negative slope represents ______.
For what purpose are pins and clips used in engineering drawings?
Which of the following statements is/are true about Functional Dimensions (F) in engineering drawing?
Statement 1: Functional Dimensions are essential to the function of the component or space.
Statement 2: Functional Dimensions are typically shown without limits.
Statement 3: Functional Dimensions are only shown for reference purposes.
Which of the following is true?
What does the symbol given below denote in a circuit diagram?

Magnetic Meridian is a
According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?
The force which makes a vehicle to stop when brake is applied is called __________.
According to the ISO-A size series, what is the designation of a trimmed sheet with dimensions 297 mm × 420 mm?