Sail E0 Webinar

General Knowledge > General Science

CHEMISTRY MCQs

Total Questions : 2589 | Page 3 of 259 pages
Question 21. German silver, an alloy, does not contain the metal
  1.    Nickel
  2.    Zinc
  3.    Copper
  4.    Silver
 Discuss Question
Answer: Option D. -> Silver
Question 22. Williamson's synthesis is widely used in the laboratory preparation of
  1.    Alcohols
  2.    Ethers
  3.    Aldehydes
  4.    Esters
 Discuss Question
Answer: Option B. -> Ethers
Question 23. Carborundum is another name of
  1.    Silicon carbide
  2.    Silicon oxide
  3.    Calcium carbide
  4.    Calcium oxide
 Discuss Question
Answer: Option A. -> Silicon carbide
Question 24. German silver is an alloy of
  1.    Copper, nickel and silver
  2.    Silver, copper and aluminium
  3.    Zinc, copper and nickel
  4.    Zinc, silver and copper
 Discuss Question
Answer: Option C. -> Zinc, copper and nickel
Question 25. Which one of the following does not contain Silver ?
  1.    Ruby Silver
  2.    Lunar Caustic
  3.    German Silver
  4.    Horn Silver
 Discuss Question
Answer: Option C. -> German Silver
Question 26. Type metal used in printing press is an alloy of
  1.    Lead and copper
  2.    Lead and antimony
  3.    Lead and bismuth
  4.    Lead and zinc
 Discuss Question
Answer: Option B. -> Lead and antimony
Question 27. Ultra purification of a metal is done by :
  1.    Slugging
  2.    Zone melting
  3.    Smelting
  4.    Leaching
 Discuss Question
Answer: Option B. -> Zone melting
Question 28. Brass gets discoloured in air due to constant exposure in presence of:
  1.    Aluminium phosphide
  2.    Hydrogen sulphide
  3.    Hydrogenated wafers
  4.    Aluminium sulphide
 Discuss Question
Answer: Option B. -> Hydrogen sulphide
Question 29. Which of the following is not present in German silver?
  1.    Copper
  2.    Nickel
  3.    Silver
  4.    Zinc
 Discuss Question
Answer: Option C. -> Silver
Question 30. Haloarenes are more stable than haloalkanes due to
  1.    Resonance effect
  2.    Inductive effect
  3.    Hyper conjugative effect
  4.    All of them
 Discuss Question
Answer: Option A. -> Resonance effect

Latest Videos

Latest Test Papers