Consider the following statements : 1. Carbon fibres are used in the manufacture of components used in automobiles and aircrafts. 2. Carbon fibres once used cannot be recycled. Which of the statements given above is/are correct?

Describes the automobile industry and notes steel as the basic raw material used in the industry, implying vehicles rely on structural materials and material choice matters.

A student could combine this with knowledge that manufacturers sometimes substitute or supplement steel with lighter high-strength materials (e.g., composite fibres) to reduce weight.

Lists plastics and synthetic fibres among important manufacturing products, indicating the manufacturing sector commonly uses non-metal, fibre-based materials.

One could extend this pattern to infer that fibre-based reinforcements (including engineered fibres) are plausible choices for vehicle components where plastics/synthetics are used.

Shows natural fibres (sisal) are used as reinforcement in composite materials for manufacturing durable panels and industrial products.

From this example, a student can generalise that fibres (natural or engineered) are used to reinforce composites — making it reasonable to check whether high-performance fibres like carbon fibre are used similarly in auto parts.

Explains manufacturing covers a wide range from plastic toys to space vehicles, emphasising specialised materials and processes in producing components.

Knowing the diversity of manufacturing, a student could infer that specialised, high-performance materials (such as carbon-fibre composites) may be used in sectors requiring strength-to-weight advantages, like automobiles.

This snippet states general recycling practice (segregating waste so it is collected and taken for recycling), giving a rule that manufactured materials are commonly targeted for recycling.

A student could apply this general rule to ask whether end-of-life carbon-fibre composites are collected/separated and thus whether there exist dedicated recycling streams for them.

The snippet highlights that some manufactured items (electronics, plastics) require special handling and distinct recycling processes due to hazardous components or material-specific methods.

By analogy, a student could infer that carbon-fibre composites might also need specialized recycling processes and therefore should check for mechanical, thermal, or chemical recycling methods used for composite materials.

This snippet draws a contrast by labelling certain carbon-based materials (fossil fuels) as non-recyclable, illustrating that 'carbon-containing' does not imply recyclability—recyclability depends on material type.

A student can use this distinction to avoid overgeneralizing from 'contains carbon' and instead investigate the material class (composite vs. fuel) to judge if recycling is feasible for carbon-fibre composites.

The snippet notes the widespread use of synthetic fibres and their durability, indicating that many synthetic/high-performance fibres exist and compete with natural materials.

A student could extend this to consider that high-performance synthetic fibres (like carbon fibres) may have distinct disposal/recycling paths from common textiles, prompting a search for industry practices for such fibres.