General Science Chemistry MCQs

Chemistry Objective (Multiple Choice) General Knowledge Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examination

91. Which of the following chemists helped to develop notation for writing chemical formulas?

[A] Amedeo Avogadro
[B] Jons Jacob Berzelius
[C] Marie Curie
[D] Robert Boyle

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92. Who discovered Benzene?

[A] John Napier
[B] John Dalton
[C] J. J. Thomson
[D] Michael Faraday

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93. Which of the following is / are correct statement(s) about Sir Shanti Swaroop Bhatnagar?

[A] He was the first chairman of University Grants Commission(India)
[B] He was the first director-general of the Council of Scientific and Industrial Research (CSIR)
[C] He is known as Father of research laboratories in India
[D] All are correct

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94. Who gave the atomic structure model in which electrons revolve around nucleus in orbits with definite amount of energy?

[A] Rutherford
[B] Neils Bohr
[C] Millikan
[D] Goldstein

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95. Which of the following is correct electronic configuration of Krypton, whose atomic number is 36?

[A] 2, 18,16
[B] 2,8,18,8
[C] 2,18,8,8
[D] 2,8,20,6

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96. Which of the following is correct increasing order of pH values of the following substances?

[A] Gastric Juice < Milk Of Magnesia < Citric Juice < Pure Water
[B] Gastric Juice < Citric Juice < Pure Water < Milk Of Magnesia
[C] Citric Juice < Gastric Juice < Pure Water < Milk Of Magnesia
[D] Gastric Juice < Citric Juice < Milk Of Magnesia < Pure Water

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97. Which of the following gases helps in bread/cake fermentation so as to make it soft and spongy?

[A] Carbon Monoxide
[B] Hydrogen
[C] Carbon dioxide
[D] Oxygen

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98. What is the flame colour of “Strontium Salt” metal ion?

[A] Bluish-Green
[B] Apple-Green
[C] Brick Red
[D] Crimson Red

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99. Which one amongst the following is not a GreenHouse gas?

[A] Nitrogen
[B] Carbon dioxide
[C] Carbon Monoxide
[D] Chloro fluorocarbons

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Which of the following is an aluminium ore?

[A] Bauxite
[B] Dolomite
[C] Calamine
[D] Haematite

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