Science Quiz 140

Posted By: Sonali Mahant

Date: January 23, 2025

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This is a timed quiz. You will be given 15 seconds per question. Are you ready?

In fireworks, the green flame is produced because of?

Lead

Barium

Copper

None

Correct! Wrong!

Permanent hardness of water may be removed by the addition of ?

Sodium carbonate

Alum

Lime

None of these

Correct! Wrong!

Which metal pollute the air of a big city?

Cadmium

Lead

Chromium

None

Correct! Wrong!

Which of the following are the ingredients of gun metal?

Copper, Tin

Iron, Brass, Tin

Iron, tin

All of these

Correct! Wrong!

Non stick cooking utensils are coated with?

Teflon

Magnalium

Invar

None

Correct! Wrong!

Which of the following was to be discovered first in the chromospheres of the sun?

Neon

Helium

Xenon

All of the above

Correct! Wrong!

Actinides are the elements with atomic numbers from?

89 to 103

36 from 43

97 to 104

None

Correct! Wrong!

Air is a/an?

Element

Compound

Mixture

None

Correct! Wrong!

Science Quiz 140

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