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MCQs

Total Questions : 1678 | Page 166 of 168 pages
Question 1651. The hybridization of nitrogen atom in pyridine is_______?
  1.    Sp
  2.    Sp2
  3.    Sp3
  4.    It is not hybridized
 Discuss Question
Answer: Option B. -> Sp2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1652. Elements which emit natural radioactivity are known as __________ ?
  1.    Radio elements
  2.    Active elements
  3.    Radioactive elements
  4.    Nuclear elements
 Discuss Question
Answer: Option C. -> Radioactive elements
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1653. A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ?
  1.    Beta particle
  2.    Gamma particle
  3.    Alpha particle
  4.    Negative particle
 Discuss Question
Answer: Option C. -> Alpha particle
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1654. Chromatography is used to separate _________ ?
  1.    Solution
  2.    Mixtures
  3.    Molecules
  4.    Atoms
 Discuss Question
Answer: Option B. -> Mixtures
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1655. Quantum numbers are __________ ?
  1.    Arithmetical values
  2.    Numerical values
  3.    Leometric values
  4.    Logical values
 Discuss Question
Answer: Option B. -> Numerical values
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1656. Distance at which attractive forces of hydrogen overcome repulsive forces is __________ ?
  1.    75.2pm
  2.    75.3pm
  3.    75.5pm
  4.    75.4pm
 Discuss Question
Answer: Option D. -> 75.4pm
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1657. In SI base units, 1 Bq is equal to __________ ?
  1.    10 disintegration per second
  2.    1.5 disintegration per second
  3.    0.01 disintegration per second
  4.    1 disintegration per second
 Discuss Question
Answer: Option D. -> 1 disintegration per second
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1658. In a group, atomic radii increase due to successive increase of _________ ?
  1.    Electronic shells
  2.    Proton shells
  3.    Neutron shells
  4.    Nucleus
 Discuss Question
Answer: Option A. -> Electronic shells
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1659. Process used to separate insoluble particles from liquids is ___________ ?
  1.    Drying
  2.    Filtration
  3.    Sieving
  4.    Extraction
 Discuss Question
Answer: Option B. -> Filtration
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1660. Effective volume is usually taken for ____________ ?
  1.    2 moles of gas
  2.    1 mole of gas
  3.    5 moles of gas
  4.    3moles of gas
 Discuss Question
Answer: Option B. -> 1 mole of gas
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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