Chemistry Multiple Choice Questions
1. The most abundant elements in the universe are
a) Nitrogen and oxygen
b) Hydrogen and Helium
c) Hydrogen and carbon
d) Helium and Carbon
2. The most abundant element in the earth’s crusts is
a) Carbon
b)Hydrogen
c) Oxygen
d) Silicon
3. Which of the following was the first organic compound to be synthesized in the laboratory?
a) Citric acid
b) Urea
c) Formic acid
d) Vinegar
4. Galvanization is the deposition of
a) copper on iron
b)tin on iron
c) zinc on iron
d) aluminium on iron
5. The process of bleaching by chorine is called
a) Decomposition
b) Oxidation
c) Reduction
d) Absorption
6. Which of the following is the hardest metal?
a) Iron
b) Plantinum
c) Tungsten
d) Silver
7. Cassiterite is the ore of
a) Lead
b) Tin
c) Zinc
d) Copper
8. German silver is an alloy of
a) Copper, silver and zinc
b)Copper,nickel and zinc
c) Silver, nickel and zinc
d) Silver,tin zinc
9. The light metal known as
a) Aluminium
b) Boron
c) Lithium
d) Sodium
10. Rusting of iron is an example of
a) Oxidation
b) Reduction
c) Absorption
d) Adsorption
11. The law of conservation of mass is proposed by
a) Ritcher
b)John Dalton
c) A.Lavoisier
d) Louis Proust
12. An isotone of an element has
a) same number of electrons
b) same number of neutrons
c) same number of protons
d) same numer of mesons
13. The green pigment present in plants, chlorophyll contains the metal:
a) Fe
b) Al
c) Mg
d) Mn
14. The pH of a buffer solution is calculated by using:
a) Gibbs equation
b)Henderson equation
c) Nerst equation
d) Debye-Huckel Onsagar Equation
15. “Iodised Salt” contains
a) Silver iodide
b) Lead iodide
c) Hydrogen iodide
d) Silver Iodide
16. Which is the second most abundant element in the universe?
a) Hydrogen
b) Oxygen
c) Nitrogen
d) Helium
17. Benzene (C6H6) can be directly converted to toluene by
a) Friedal-Craft reaction
b)Wurtz reaction
c) Kolbes reaction
d) Etards reaction
18. The promoter used in the ‘Haber Process’ for the manufacture of ammonia is:
a) FeO
b) CrO2
c) ZnO
d) MO
19. Solvary process is used for the manufacture of:
a) Calcium carbonate
b) Sodium carbonate
c) Sodium hydroxide
d) Potassium carbonate
20. Which element below seems to be most useful in making transistors?
a) Antimony
b) Silicon
c) Graphite
d) Titanium
Learn more:
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I have put in my best efforts in preparing this article and disclaim liability arising directly or indirectly from the use and application of my worked solutions. Any omissions or errors are unintentional, and will be corrected through further... - Top Ten Chemistry Questions and Answers
Kids come up with great questions. This hub aims to answer some tricky chemistry questions I have come across in my experience as a High School Teacher. From what is an acid to how do fireworks change colour to how glow sticks work!
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Answers
1- b, 2-c, 3-b, 4-c, 5-b, 6-c, 7-b, 8-b, 9-c, 10-a
11-c, 12-b, 13-c, 14-b, 15-a, 16-d, 17-a, 18-a, 19-b, 20-b
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