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ELEMENTS AND METALS MCQs

Total Questions : 63 | Page 1 of 7 pages
Question 1.

Chemical formula for water is



  1.    NaAlO2
  2.    H2O
  3.    Al2O3
  4.    CaSiO3
 Discuss Question
Answer: Option B. -> H2O


Question 2.


Which of the following is an element?



  1.    Ruby
  2.    Sapphire
  3.    Emerald
  4.    Diamond
 Discuss Question
Answer: Option D. -> Diamond


Question 3.

Potassium Permanganate is used for purifying drinking water, because



  1.    it is a sterilising agent
  2.    it dissolves the impurities of water
  3.    it is a reducing agent
  4.    it is an oxidising agent
 Discuss Question
Answer: Option D. -> it is an oxidising agent


Question 4.


Which of the following metals remain in liquid for under normal conditions?



  1.    Radium
  2.    Zinc
  3.    Uranium
  4.    Mercury
 Discuss Question
Answer: Option D. -> Mercury


Question 5.

Which of the following is the lightest metal?



  1.    Mercury
  2.    Lithium
  3.    Lead
  4.    Silver
 Discuss Question
Answer: Option B. -> Lithium


Question 6.

Amalgams are



  1.    highly coloured alloys
  2.    alloys which contain mercury as one of the contents
  3.    alloys which have great resistance to abrasion
  4.    alloys which contain carbon
 Discuss Question
Answer: Option B. -> alloys which contain mercury as one of the contents


Question 7.


Bell metal is an alloy of



  1.    nickel and copper
  2.    zinc and copper
  3.    brass and nickel
  4.    tin and copper
 Discuss Question
Answer: Option D. -> tin and copper


Question 8.

The main constituents of pearls are



  1.    calcium oxide and ammonium chloride
  2.    calcium carbonate and magnesium carbonate
  3.    aragonite and conchiolin
  4.    ammonium sulphate and sodium carbonate
 Discuss Question
Answer: Option B. -> calcium carbonate and magnesium carbonate


Question 9.


Water is a good solvent of ionic salts because



  1.    it has a high specific heat
  2.    it has no colour
  3.    it has a high dipole moment
  4.    it has a high boiling point
 Discuss Question
Answer: Option C. -> it has a high dipole moment


Question 10.


Which of the following is not an isotope of hydrogen?



  1.    Tritium
  2.    Deuterium
  3.    Protium
  4.    Yttrium
 Discuss Question
Answer: Option D. -> Yttrium

http://en.wikipedia.org/wiki/Isotopes_of_hydrogen


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