Chemistry General Knowledge Questions and Answers

9. Species containing same number of electrons are called
  A.  Isoelectronic
  B.  Isobars
  C.  Isotones
  D.  Isotopes
Answer
Ans: A
Isoelectronic
10. The end product of alcoholic fermentation is
  A.  Ethyl alcohol
  B.  Formic acid
  C.  Acetaldehyde
  D.  Pyruvic acid
Answer
Ans: A
Ethyl alcohol
11. Which of the following is the most common element in the universe?
  A.  Carbon
  B.  Oxygen
  C.  Nitrogen
  D.  Hydrogen
Answer
Ans: D
Hydrogen
12. What is the composition of nitrolim- a chemical fertilizer?
  A.  Calcium carbide and nitrogen
  B.  Calcium carbide and carbon
  C.  Nitrogen and limestone
  D.  None of these
Answer
Ans: D
None of these
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