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MCQs

Total Questions : 199 | Page 5 of 20 pages
Question 41. The molar mass of NaCl is_____________________?
  1.    56.58
  2.    43.28
  3.    50.58
  4.    58.58
 Discuss Question
Answer: Option D. -> 58.58
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 42. International atomic weight of potassium is_________________?
  1.    39.0
  2.    40.0
  3.    41.0
  4.    38.0
 Discuss Question
Answer: Option A. -> 39.0
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 43. The available form of calcium to plant is________________?
  1.    Ca(free cation
  2.    CaO
  3.    Ca
  4.    None of the above
 Discuss Question
Answer: Option A. -> Ca(free cation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 44. Histols are found in______________________?
  1.    Pakistan
  2.    Canada
  3.    Alaska
  4.    Both b & c
 Discuss Question
Answer: Option D. -> Both b & c
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 45. Mineral soil contain organic carbon___________________?
  1.    >4%
  2.    5%
  3.    >10%
 Discuss Question
Answer: Option C. -> Both b & c
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 46. The chemical formula of urea fertilizer is_______________________?
  1.    NH₂CONH₂
  2.    [CO(NH₂)]
  3.    Both a & b
  4.    None of the above
 Discuss Question
Answer: Option C. -> Both a & b
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 47. Lithosphere refers to____________________?
  1.    Zone of atmosphere
  2.    Zone of earth crust
  3.    Zone of ozone
  4.    Zone of water
 Discuss Question
Answer: Option B. -> Zone of earth crust
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 48. Elements essentially required for growth of all plants species are___________________?
  1.    32
  2.    15
  3.    16
  4.    3
 Discuss Question
Answer: Option C. -> 16
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 49. Problem of erosion in Thal and Cholistan is due to____________________?
  1.    Wind
  2.    Fire
  3.    Water
  4.    Atmosphere
 Discuss Question
Answer: Option A. -> Wind
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 50. Age of Earth is_____________________?
  1.    4.5 billion years
  2.    4 billion years
  3.    1 billion years
  4.    6 billion years
 Discuss Question
Answer: Option A. -> 4.5 billion years
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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