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Everyday Science Mcqs

How many pairs of walking legs does a cockroach have?

How many pairs of walking legs does a cockroach have?

A. One
B. Two
C. Three
D. Four

A cockroach is similar to other insects in the way its body is constructed. The body is divided into three parts—head, thorax, and abdomen. Three pairs of legs are attached to the thorax. Most cockroaches have three joints on each leg, which means they have 18 knees!

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Everyday Science Mcqs

Which liquid is used in an aneroid barometer?

Which liquid is used in an aneroid barometer?

A. Mercury
B. Alcohol
C. Water
D. None

An aneroid barometer is an instrument used for measuring pressure as a method that does not involve liquid. Invented in 1844 by French scientist Lucien Vidi, the aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule), which is made from an alloy of beryllium and copper.

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Everyday Science Mcqs