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MCQs

Total Questions : 740 | Page 10 of 74 pages
Question 91. The halogens reacts with non-metals forming
  1.    ionic bond
  2.    covalent bond
  3.    coordinate bond
  4.    dative bond
 Discuss Question
Answer: Option B. -> covalent bond
Answer: (b).covalent bond
Question 92. A precipitate will be formed if an unknown compound is added in dilute
  1.    nitric acid only
  2.    silver nitrate only
  3.    sulfuric acid
  4.    nitric acid and silver nitrate
 Discuss Question
Answer: Option D. -> nitric acid and silver nitrate
Answer: (d).nitric acid and silver nitrate
Question 93. The highly reactive element which can burn glass, metals, and water in a stream of gas is even when cold is
  1.    iodine (I₂)
  2.    fluorine (F₂)
  3.    chlorine (Cl₂)
  4.    bromine (Br₂)
 Discuss Question
Answer: Option B. -> fluorine (F₂)
Answer: (b).fluorine (F₂)
Question 94. Each halogen atom tends to gain 1e⁻ when it reacts with
  1.    metal
  2.    non-metal
  3.    acid
  4.    water
 Discuss Question
Answer: Option A. -> metal
Answer: (a).metal
Question 95. HCl is mostly visible in the form of
  1.    blue fumes
  2.    white fumes
  3.    grey fumes
  4.    purple fumes
 Discuss Question
Answer: Option B. -> white fumes
Answer: (b).white fumes
Question 96. Hess's law states that a chemical reaction is independent of the route by which chemical reactions takes place while keeping the same
  1.    initial conditions only
  2.    final conditions only
  3.    mid-conditions
  4.    initial and final conditions
 Discuss Question
Answer: Option D. -> initial and final conditions
Answer: (d).initial and final conditions
Question 97. Bhaskara suggested perpetual motion by explaining a wheel could run
  1.    to and fro
  2.    forever
  3.    up and down
  4.    down and up
 Discuss Question
Answer: Option B. -> forever
Answer: (b).forever
Question 98. The carbonyl group in aldehyde is
  1.    C=O
  2.    C-O
  3.    CO
  4.    CHO
 Discuss Question
Answer: Option A. -> C=O
Answer: (a).C=O
Question 99. The first law of thermodynamics states that energy can not be
  1.    created only
  2.    destroyed only
  3.    converted
  4.    created and destroyed
 Discuss Question
Answer: Option D. -> created and destroyed
Answer: (d).created and destroyed
Question 100. Blue cheese has smell because of ketone
  1.    heptan-2-one
  2.    heptan-3-one
  3.    heptan-2-ol
  4.    hexa-2-one
 Discuss Question
Answer: Option A. -> heptan-2-one
Answer: (a).heptan-2-one

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