Question

Computer is made up of:
[ This question has multiple correct options.]
(A) Plastic
(B) Metal
(C) Wood
(D) Silk

Answer 1

Hint: The outer surface or layer of parts of the computer like monitor, keyboard, mouse and CPU is made up of various synthetic fibres. Some elements of s-block and d-block are also present in chips of computers.

Complete Step-by-Step Solution:
We will get some information about the material by which the computer is made.
- We know that computers are made up of many parts like monitor, CPU, keyboard and mouse.
- The outer parts of the monitor, keyboard and mouse are made up of synthetic polymers. These synthetic polymers are also known as plastic.
- Plastic are generally synthetic or semi-synthetic organic compounds. The outer parts are made up of plastic material because they are cheap in cost and they can be molded in various required shapes. They are also light in weight and they do not conduct heat and electricity. So, it is very convenient to use them as covers.
- However, some parts which are in CPU and monitor are made up of metals as well. Some chips usually contain metals. Metals like aluminum, antimony, arsenic, barium, beryllium, chromium, cobalt, copper, iron and gold may be present in those parts. Actually some precious metals like gold and silver may also be present in computer parts.
-Thus, we can say that computers are not only made up of plastic but also contain metals.

Therefore, correct answers of the question are (A) and (B).

Note: A study on metals found from computer scraps found that an average computer usually contains 10 $ of gold metal. Metals are used in chips because they can conduct electricity and to maintain function of some electronic devices, we require such materials.