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MCQs

Total Questions : 1678 | Page 40 of 168 pages
Question 391. The method which leads to the formation of Colored precipitates is
  1.    Fajan's method
  2.    Mohr's method
  3.    Volhard's method
  4.    All of above
 Discuss Question
Answer: Option B. -> Mohr's method
Answer: (b).Mohr's method
Question 392. Fajan's method depends on the formation of
  1.    Colored Compounds
  2.    Colored complex ions
  3.    Colored secondary precipitates
  4.    Cationic species
 Discuss Question
Answer: Option A. -> Colored Compounds
Answer: (a).Colored Compounds
Question 393. The main types of precipitation titrations are
  1.    Volhard's method
  2.    Fajan's method
  3.    Mohr's method
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Answer: (d).All of above
Question 394. The most important application in pharmaceutical industries is
  1.    Qualitative analysis
  2.    Quantitative analysis
  3.    Solvent extraction
  4.    Evaporation
 Discuss Question
Answer: Option B. -> Quantitative analysis
Answer: (b).Quantitative analysis
Question 395. The endpoint will be too early if the concentration of K₂CrO₄ is
  1.    High
  2.    Low
  3.    Negligible
  4.    Moderate
 Discuss Question
Answer: Option A. -> High
Answer: (a).High
Question 396. The gas fixed by bacteria is
  1.    N₂
  2.    CO
  3.    Ar
  4.    He
 Discuss Question
Answer: Option A. -> N₂
Answer: (a).N₂
Question 397. August Smith discovered in the mid of 17th century
  1.    Acid
  2.    Base
  3.    Acid rain
  4.    Fertilizer
 Discuss Question
Answer: Option C. -> Acid rain
Answer: (c).Acid rain
Question 398. One of the oxidizing agents is eye irritant and toxic to plants
  1.    H₂O₂
  2.    HNO₃
  3.    PAN
  4.    Ozone
 Discuss Question
Answer: Option C. -> PAN
Answer: (c).PAN
Question 399. Oxygen in atmosphere is
  1.    78%
  2.    21%
  3.    0.90%
  4.    0.30%
 Discuss Question
Answer: Option B. -> 21%
Answer: (b).21%
Question 400. Elements in lithosphere exist generally as
  1.    Metals
  2.    Non-metals
  3.    Metalloids
  4.    Minerals
 Discuss Question
Answer: Option D. -> Minerals
Answer: (d).Minerals

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