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Environmental Effects of Plastic

Plastics are ...

Question

Plastics are used in cars, aircrafts and spacecrafts because they are_____

A

True

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B

False

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C

more lusturous in comparison to metals

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D

None of the above

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Solution

The correct option is B
False

Plastic is very light, strong and durable. In addition to these, it can also be molded into different shapes and sizes. So, it is used for various purposes in industries and for the manufacture of household products. Since plastic is cheaper and lighter than metals, it is used in cars, air crafts and space crafts.

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Similar questions

Plastics are heavier than metals, so they are used in cars, aircrafts and spacecrafts.

Q. 33. Which of the following are advantages of optical fibres over metal wires?
i) Optical fibres can carry more data than metal cables.
ii) They are less susceptible to interference by electromagnetic radiation.
iii) They are lighter and thinner than metal wires.
Options:

Q. Metals which are placed above hydrogen in the reactivity series are more reactive than

H_{2}

Q. Question 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous; non-sonorous; non-malleable and are coloured.
(a) Name a lustrous non-metal.
(b) Name a non-metal which exists as a liquid at room temperature.
(c) The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.
(d) Name a non-metal which is known to form the largest number of compounds.
(e) Name a non-metal other than carbon which shows allotropy.
(f) Name a non-metal which is required for combustion.

Non metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.

Non-metal other than carbon, which shows allotropy is:

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