Chemistry MCQs

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

1. A high-refractive-index polymer (HRIP) is a polymer that has a refractive index greater than _?
[A] .50
[B] 1.0
[C] 1.20
[D] 1.50

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2. Who among the following scientists had discovered Radium?
[A] Marie Sklodowska-Curie and Pierre Curie
[B] André-Louis Debierne
[C] Kasimir Fajans
[D] Oswald Helmuth Göhring

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3. Out of the following options, which group of elements is typically found in a free state?
[A] Group 11 elements
[B] Group 12 elements
[C] Group 13 elements
[D] Group 14 elements

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4. What characteristic of silica gel, a granular form of silica produced from sodium silicate, enables it to control humidity and prevent spoilage or degradation when packaged with various products?
[A] Its high thermal conductivity
[B] Its hygroscopic properties
[C] Its high reflectivity
[D] Its low thermal conductivity

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5. Which among the following was first human-made plastic?
[A] Bakelite
[B] Polyethene
[C] Celluloid
[D] Nylon

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6. The largest component of Coal gas is__?
[A] Methane
[B] Hydrogen
[C] Carbon Dioxide
[D] Carbon Monoxide

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7. The presence of which of the following chemical elements helps to differentiate between sweet and sour crude oil?
[A] Iron
[B] Sulphur
[C] Vanadium
[D] Chromium

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8. Which of the following alkali metal ions has the highest hydration enthalpy?
[A] Lithium
[B] Sodium
[C] Potassium
[D] Caesium

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9. Which of the following is the use of washing soda?
[A] softening of water
[B] manufacture of glass
[C] manufacture of paints
[D] All of the above

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10. What is the chemical name of Quick lime?
[A] Calcium peroxide
[B] Calcium oxide
[C] Calcium dioxide
[D] Calcium hydroxide

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