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MCQs

Total Questions : 1678 | Page 49 of 168 pages
Question 481. Avogadros number may represent_________________?
  1.    volume of particles
  2.    number of particles
  3.    mass of particles
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 482. The mass of decimole of electrons (NA) is___________________?
  1.    1.008 mg
  2.    0.184 mg
  3.    0.054 mg
  4.    5.4 mg
 Discuss Question
Answer: Option C. -> 0.054 mg
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 483. When 0.5 mole of phosphoric acid is dissolved in aqueous solution how many moles of -ve and +ve ions are collected altogether ?
  1.    0.5
  2.    1
  3.    1.5
  4.    2
 Discuss Question
Answer: Option D. -> 2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 484. All the following variables are used to describle gases except__________________?
  1.    pressure
  2.    volume
  3.    moles
  4.    density
 Discuss Question
Answer: Option D. -> density
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 485. Isotopes differ in_________________?
  1.    properties which depend upon mass
  2.    arrangement of electrons in orbitals
  3.    chemical properties
  4.    all of the above
 Discuss Question
Answer: Option A. -> properties which depend upon mass
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 486. Which of the following statements is wrong about isotopes ?
  1.    they possess different mass number
  2.    they possess different physical properties
  3.    they possess same chemical properties
  4.    they possess different position in the periodic table
 Discuss Question
Answer: Option D. -> they possess different position in the periodic table
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 487. Which of the following methods is used to estimate hydrogen in an organic compound ?
  1.    Combustion method
  2.    Dumas method
  3.    Kjeldahls method
  4.    All of the above methods are for different purposes
 Discuss Question
Answer: Option A. -> Combustion method
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 488. The nucleus of an atom of every element will always contain____________________?
  1.    neutrons
  2.    protons and electrons
  3.    protons
  4.    protons and neutrons
 Discuss Question
Answer: Option C. -> protons
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 489. Combustion analysis is performed to determine__________________?
  1.    Empirical formula
  2.    Molecular mass
  3.    Molecular formula
  4.    Formula mass
 Discuss Question
Answer: Option A. -> Empirical formula
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 490. Dempsters mass spectrometer has number of zones / parts_________________?
  1.    5
  2.    4
  3.    3
  4.    2
 Discuss Question
Answer: Option A. -> 5
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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