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MCQs

Total Questions : 50 | Page 4 of 5 pages
Question 31. If one mole of carbon contains x atoms then the number of atoms in 12g of Mg are
  1.    x
  2.    0.5x
  3.    2x
  4.    1.5x
 Discuss Question
Answer: Option B. -> 0.5x
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 32. The molecular mass of glucose is
  1.    180.096 amu
  2.    190.096 amu
  3.    181.096 amu
  4.    130.096 amu
 Discuss Question
Answer: Option A. -> 180.096 amu
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 33. The number of atoms of hydrogen in 2 moles of NH3
  1.    5 * 10²³
  2.    3.01 * 10²³
  3.    3.61 * 10²⁴
  4.    4 * 10²³
 Discuss Question
Answer: Option C. -> 3.61 * 10²⁴
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 34. A science that examines the material this universe contains and changes in them is called
  1.    Chemistry
  2.    Physics
  3.    Biology
  4.    Geography
 Discuss Question
Answer: Option A. -> Chemistry
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 35. Negatively charged ions are called
  1.    cations
  2.    anions
  3.    ion
  4.    none of above
 Discuss Question
Answer: Option B. -> anions
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 36. The number of atoms in 5 moles of nitrogen atom is
  1.    3.01 * 10²⁴
  2.    4.1 * 10³⁰
  3.    3.9 * 10³²
  4.    5 * 10⁵⁶
 Discuss Question
Answer: Option A. -> 3.01 * 10²⁴
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 37. The matter is anything that occupies
  1.    space only
  2.    mass only
  3.    time
  4.    space and mass
 Discuss Question
Answer: Option D. -> space and mass
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 38. The branch of chemistry which deals with a substance containing carbon is called
  1.    carbon chemistry
  2.    inorganic chemistry
  3.    organic chemistry
  4.    environmental chemistry
 Discuss Question
Answer: Option C. -> organic chemistry
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 39. The mass of 1 mole of sucrose is
  1.    320g
  2.    342g
  3.    341g
  4.    340g
 Discuss Question
Answer: Option B. -> 342g
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 40. The formula which gives the simplest whole-number ratio of atoms is
  1.    empirical formula
  2.    molecular formula
  3.    chemical formula
  4.    actual formula
 Discuss Question
Answer: Option A. -> empirical formula
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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