Wednesday 20 October 2021

Chemistry Gk Questions

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


1. What is the freezing point of water?

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

Show Answer

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

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

Show Answer

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

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

Show Answer

4. What is the formula of baking soda?

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

Show Answer

5. Which is the ore of aluminum?

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

Show Answer

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

Show Answer

7. Who discovered the neutron?

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

Show Answer

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

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

Show Answer

9. Which is a heterogeneous mixture?

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

Show Answer

10. Which is not a matter?

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

Show Answer