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CHEMISTRY MCQs

Total Questions : 2589 | Page 1 of 259 pages
Question 1. "Paramagnetism" is the property of
  1.    Paired electrons
  2.    Completely filled electronics subshells
  3.    Unpaired electrons
  4.    Completely vacant electronic subshells
 Discuss Question
Answer: Option C. -> Unpaired electrons
Question 2. The structure of NaCl crystal is
  1.    Body centered cubic
  2.    Face centered cubic
  3.    Octahedral
  4.    Square planar
 Discuss Question
Answer: Option B. -> Face centered cubic
Question 3. Which one of the following minerals is found in Monazite sand ?
  1.    Potassium
  2.    Uranium
  3.    Thorium
  4.    Sodium
 Discuss Question
Answer: Option C. -> Thorium
Question 4. The heaviest naturally occurring element is:
  1.    Mercury
  2.    Polonium
  3.    Thorium
  4.    Uranium
 Discuss Question
Answer: Option D. -> Uranium
Question 5. Which of the following is the main compound of voter ink?
  1.    Silver nitrate
  2.    Ammonium Chloride
  3.    Silver Chloride
  4.    Ammonium Nitrate
 Discuss Question
Answer: Option A. -> Silver nitrate
Question 6. In which of the following ions , the colour is not due to d-d transition ?
  1.    [Ti(H2O)6]3+
  2.    [CoF6]3+
  3.    [CrO4]2−
  4.    [Cu(NH3)4]2+
 Discuss Question
Answer: Option C. -> [CrO4]2−
Question 7. What is Zeolite?
  1.    Hydrated Aluminosilicate
  2.    Hydrated Calcium Sulphate
  3.    Dehydrated Aluminosilicate
  4.    Dehydrated Calcium Sulphate
 Discuss Question
Answer: Option A. -> Hydrated Aluminosilicate
Question 8. The coordination number of body centered atom in cubic structure is
  1.    4
  2.    6
  3.    8
  4.    10
 Discuss Question
Answer: Option C. -> 8
Question 9. The product, 9-nitroanthracene is obtained from anthracene by the action of
  1.    Nitric acid and acetic anhydride
  2.    Nitric acid and ethyl alcohol
  3.    Nitric acid and acetic acid
  4.    Nitric acid in excess
 Discuss Question
Answer: Option A. -> Nitric acid and acetic anhydride
Question 10. Peroxyacetyl nitrate is a
  1.    Acidic dye
  2.    Plant hormone
  3.    Vitamin
  4.    Secondary pollutant
 Discuss Question
Answer: Option D. -> Secondary pollutant

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