Which gas ranks third in abundance in the air we breathe?
Correct answer B. Argon
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Everyday Science MCQs
Page 32 of Everyday Science multiple-choice questions with answers. Tap an option to check yourself.
Page 32 of 198
What is the molecular formula of glucose?
Correct answer C. C6H12O6
Which of these is a diverse group of hydrophobic molecules?
Correct answer B. Lipids
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What is the chemical formula of sulphuric acid?
Correct answer C. H2SO4
Who first introduced the MKS system of units?
Correct answer B. Giorgi
How can a mixture of sand and naphthalene be separated?
Correct answer A. Sublimation
What is the chemical formula of sodium carbonate?
Correct answer C. Na2CO3
What does the breath test used by traffic police to detect drink-driving rely on?
Correct answer A. Potassium dichromate-sulphuric acid
Which gas in the air causes brass to become discoloured?
Correct answer D. Hydrogen sulphide
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On which principle is the hydrogen bomb based?
Correct answer D. Nuclear fusion
What are atoms of the same element with the same number of protons but different numbers of neutrons called?
Correct answer A. Isotopes
Which symbol is used for the proton number?
Correct answer B. Z
Which gas is usually given off when an acid reacts with a metal?
Correct answer A. Hydrogen gas
Scientists recently identified the protein Importin-11. Which type of cancer is it linked to?
Correct answer A. Colorectal Cancer
What is the study of X-rays and their medical uses called?
Correct answer B. Radiology
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What can be used to remove the permanent hardness of water caused by metal sulphates?
Correct answer A. Zeolites
What is the chemical formula of zinc hydroxide?
Correct answer B. Zn(OH)2
What is the valency of a carbon atom?
Correct answer D. 4
Which medical term is used for a fever?
Correct answer D. Pyrexia
In environmental terms, what does the phrase “dirty dozen” refer to?
Correct answer B. 12 persistent organic pollutants