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

1. Which of the following is the poorest conductor of heat in comparison to other options?

[A] Silver
[B] Copper
[C] Lead
[D] Mercury

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2. Which of the following does not increase when we move from left to right along a period in the periodic table?

[A] Oxidising Power of elements 
[B] Electronegativity 
[C] Non-metallic Character 
[D] Reducing power

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3. The energy required to remove an electron from the outermost shell of an atom in its isolated gaseous state is called?

[A] Electron Affinity
[B] Reducing Potential
[C] Ionization Potential
[D] Shell Potential

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4. Which among the following elements are generally find in free state?

[A] Group 11 elements
[B] Group 12 elements
[C] Group 13 elements
[D] Group 14 elements

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5. Which among the following is the objective of the Methyl tert-butyl ether (MTBE) mixing with Petroleum? 

[A] Raise Octane Number
[B] Antioxidant Stabilizer
[C] Lead Scavanger
[D] Fuel Dye

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6. Identify the thermosetting plastic from the given options:

[A] Polythene
[B] Bakelite
[C] Polyvincychloride
[D] Casseine

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7. Which among the following is the correct decreasing of bio elements in Human Body?

[A] oxygen, hydrogen, Carbon, nitrogen, calcium, and phosphorus
[B] oxygen, carbon, nitrogen, hydrogen, calcium, and phosphorus
[C] oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus
[D] carbon, oxygen, hydrogen, nitrogen, calcium, and phosphorus

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8. “Atoms can neither be created nor destroyed.” This principle was given by __?

[A] Avogadro
[B] Dalton
[C] Rutherford
[D] Niels Bohr

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9. What is the common name of analgesic and antipyretic drug acetylsalicylic acid?

[A] Paracetamol
[B] Aspirin
[C] Wintergreen
[D] Trazodone

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10. What happens to the weight of Iron, when it rusts?

[A] Increases for long time
[B] Decreases then increases
[C] Increases then decreases
[D] Remains the same

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