General Knowledge: Chemistry Questions Answer GK Quiz

Chemistry Question Answer 2024, Chemistry Quiz Questions 2024

Q. The sour taste of vinegar is due to -
1) Lactic acid
2) Citric acid
3) Acetic acid
4) Tartaric acid

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Q. Which one of the following is the correct order of the valences of elements Ne, Si, N, and Mg?
1) Ne2) Si3) Ne4) Mg

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Q. The mass number of argon is 40. Which one of the following statements is correct?
1) The number of protons in argon is 22
2) The number of neutrons in argon is 18
3) The number of electrons in argon is 18
4) The sum of numbers of pro-tons and electrons in argon is 40

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Q. Electronic Configuration of Sodium is -
1) 2, 8, 1
2) 2, 8, 7
3) 2, 8, 8, 1
4) 2, 8, 18, 1

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Q. Which of the following is a weak Acid -
1) Hydrochloric Acid
2) Nitric Acid
3) Acetic Acid
4) Sulphuric Acid

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Q. Magnesium and oxygen combine when heated to form magnesium oxide. It is a -
1) Combination reaction
2) Decomposition rection
3) Displacement reaction
4) Oxidation reaction

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Q. A homogeneous mixture contains two liquids. How are they separated?
1) By condensation
2) By evaporation
3) By filtration
4) By distillation

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Q. The angular momentum of an electron in the third orbit of an atom is -
(Given h = 6.6 x 10-34 Joule sec )

1) 3.15 x 10-34 Joule sec
2) 6.30 x 10-34 Joule sec
3) 3.15 x 1034 Joule sec
4) 6.30 x 1034 Joule sec

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Q. Which of the following gas is responsible for acid rain?
1) Ammonia (NH3)
2) Carbon monoxide (CO)
3) Methane (CH4)
4) Sulphur dioxide(SO2)

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Q. Which of the following calcium compound is used as a mild abrasive in toothpaste?
1) CaO
2) Ca(OH)2
3) CaCO3
4) CaCl2

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