Preparation of the BCS exam (Daily science

1. People first learn to use what metal?

A) Silver b) gold c) copper d) iron

2. Which is the heaviest metal?

A) Iron b) Paradise c) Platinum d) Nickel

3. Which unit is used to measure gold, diamonds?

A) Barrels b) Caret c) Carroll d) Kuesak

4. Which element is most active?

A) Sodium b) Magnesium

C) Potassium d) Oxygen

5. Which metal contains 'violet' in flame test?

A) Potassium b) Sodium

C) copper d) calcium

6. Which of the following is the elite metal?

A) gold b) silver

C) Platinum d) All the above

7. Which of the following metals is used to make the electric?

A) Antimony b) Sodium

C) Iron d) copper

8. How much caroted gold is pure gold?

A) 22 carats b) 24 carats

C) 28 carats d) 18 carats

9. What is alkali metal?

A) Lithium b) Sodium

C) Potassium d) All of the above

10. Which is the metal of the soil?

A) Magnesium b) Calcium

C) Stronsium d) All of the above

11. Which is the soft metal?

A) Sodium b) Potassium

C) Lead d) All of the above

12. What is Asbestos?

A) Fire insulation minerals

B) Low-density liquid substances

C) High density liquid content

D) One type of chemical substance

13. Zircon, Monajite, Boutail, etc Build-

A) Gold b) Blacksona

C) Rupa d) Platinum

14. Which of the following minerals?

A) gold b) silver

C) Iron d) All of the above

15. Which sodium is ore?

A) Dolomite b) Galena

C) Saltpeter d) Rockets

16. What is the symbol of potassium?

A) b) Spirits c) D) Slit

17. What is the number of particles in an atom?

A) 1 b) 3 c) 5 d) 6

18. Who invented the electron?

A) Thomson b) Nile Bos

C) Rutherford d) James Chadwick

19. Who invented protons?

A) Chadwick b) Rutherford

C) Thomson d) Curie

20. Who invented neutrons?

A) Chadwick b) Thomson

C) Rutherford d) Curious

Answer: 1.C, 2.C, 3.B, 4.C, 5A, 6.D, 7.D, 8.B, 9.D, 10.D, 11.D, 12A, 13.B, 14.D, 15.D, 16.C, 17.B, 18.A, 19.B, 20.A,