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MCQs

Total Questions : 50 | Page 3 of 5 pages
Question 21. Compounds have atoms of
  1.    same sizes
  2.    different sizes
  3.    same electrons
  4.    different electrons
 Discuss Question
Answer: Option B. -> different sizes
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 22. 6.022 * 10²³ atoms of Sulphur contains
  1.    2 moles
  2.    3 moles
  3.    4 moles
  4.    1 mole
 Discuss Question
Answer: Option D. -> 1 mole
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 23. The molecular formula gives
  1.    simplest ratio of atoms
  2.    actual whole number ratio of atoms
  3.    whole number ratio of atoms
  4.    natural number ratio of atoms
 Discuss Question
Answer: Option B. -> actual whole number ratio of atoms
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 24. An oxide ion has -2 charge because
  1.    oxygen looses two electrons
  2.    oxygen gains two electrons
  3.    oxygen becomes neutral
  4.    oxygen gains 3 electrons
 Discuss Question
Answer: Option B. -> oxygen gains two electrons
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 25. Which of the following is present in vinegar?
  1.    10% acetic acid
  2.    5%acetic acid
  3.    7% acetic acid
  4.    8% acetic acid
 Discuss Question
Answer: Option B. -> 5%acetic acid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 26. An ionic compound is electrically
  1.    neutral
  2.    positively charged
  3.    negatively charged
  4.    none of above
 Discuss Question
Answer: Option A. -> neutral
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 27. The formula mass of NaCl is
  1.    57.5 amu
  2.    58.5 amu
  3.    59.5 amu
  4.    60.0 amu
 Discuss Question
Answer: Option B. -> 58.5 amu
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 28. Gram molecular mass of C6H12O6 is
  1.    18.016g
  2.    180.096g
  3.    58.5g
  4.    70g
 Discuss Question
Answer: Option B. -> 180.096g
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 29. In glucose the simplest ratio between C, H and O is
  1.    0.0840625
  2.    0.126400462962963
  3.    0.0430671296296296
  4.    0.127789351851852
 Discuss Question
Answer: Option C. -> 0.0430671296296296
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 30. Species present in a substance refers to
  1.    atoms
  2.    ions
  3.    molecules
  4.    representative particles
 Discuss Question
Answer: Option D. -> representative particles
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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