Wednesday 20 October 2021

Chemistry Gk Questions

Chemistry MCQ based Gk Questions for UPSC, NDA, SSC, CDS, UPPSC and other examinations.

Quiz

1. What is the freezing point of water?

a) 300 K
b) 428 K
c) 273 K
d) 373 K

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2. What is the correct molecular formula of aluminum chloride?

a) Al3Cl
b) AlCl3
c) AlCl
d) ClAl3

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3. Which gas is filled in food packets to prevent them from decaying?

a) O2
b) CO2
c) N2
d) SO2

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4. What is the formula of baking soda?

a) NaHCO3
b) NaCl
c) Na2CO3
d) KOH

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5. Which is the ore of aluminum?

a) Copper
b) Haematite
c) Bauxite
d) Cuprite

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6. Which solution converts the colorless solution into blue when copper is put in it?

a) Silver nitrate solution
b) Copper sulfate solution
c) Sodium chloride solution
d) Baking soda solution

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7. Who discovered the neutron?

a) Mendel
b) Chadwick
c) Rutherford
d) Ohm

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8. From which method can pure sugar be recovered from a sugar solution?

a) Distillation
b) Evaporation
c) Crystallization
d) Sublimation

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9. Which is a heterogeneous mixture?

a) Sugar solution
b) Air
c) Mixture of sand and water
d) Carbonated water

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10. Which is not a matter?

a) Iron
b) Air
c) Water
d) Light

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