RRB Group D 2025 Chemistry Focus MCQ : Metals and Alloys MCQ Practice Set

RRB Group D 2025 Chemistry Focus MCQ : will include General Science questions, particularly from Chemistry and everyday applications of metals and alloys. To help aspirants prepare effectively, here is a curated set of multiple-choice questions (MCQs) based on previously asked papers such as SSC, RRB, and WBCS. These questions focus on the properties, uses, and combinations of metals and alloys, which are commonly asked in the General Science section.

Use this practice set to boost your preparation and get a better understanding of key concepts that are likely to appear in the exam.

RRB Group D 2025 – Chemistry Focus: Metals and Alloys MCQ Practice Set

Here are the MCQs:

1. What is another name for ‘Slag’?
(a) Molten iron
(b) Molten sand
(c) Molten alumina
(d) Molten calcium

2. In which mineral is the metal found in a pure state?
(a) Iron
(b) Copper
(c) Bauxite
(d) Manganese

3. Which metal is extracted by electrolysis and hydrolysis from its ore?
(a) Copper
(b) Aluminium
(c) Silver
(d) Lead

4. The filaments of electric bulbs are made using which metal?
(a) Copper
(b) Magnesium
(c) Silver
(d) Uranium

5. Which metal is magnetic?
(a) Iron
(b) Calcium
(c) Magnesium
(d) Sodium

6. The alloy of two metals that make bronze is—
(a) Zinc and Lead
(b) Tin and Lead
(c) Zinc and Tin
(d) Zinc and Copper

7. Which metal is soft and can be cut with a knife?
(a) Sodium
(b) Silver
(c) Zinc
(d) Aluminium

8. Which of the following is a non-ferrous metal?
(a) Cobalt
(b) Nickel
(c) Iron
(d) Aluminium

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9. Which metal is used for making mirrors?
(a) Copper
(b) Lead
(c) Zinc
(d) Aluminium

10. Which among the following is the heaviest metal?
(a) Copper
(b) Aluminium
(c) Silver
(d) Uranium

11. Metals are good conductors because—
(a) They have free electrons
(b) Their outermost orbit is very close
(c) They have loosely held electrons
(d) They have reflective properties

12. Which alloy is used for making ‘Type Metal’ for printing press?
(a) Lead and Copper
(b) Lead and Aluminium
(c) Lead and Bismuth
(d) Lead and Zinc

13. Which material is used to make ‘heater coils’ for electric heaters?
(a) Copper
(b) Iron
(c) Silver
(d) Nichrome

14. Which metal is extracted from seawater?
(a) Potassium
(b) Magnesium
(c) Aluminium
(d) Beryllium

15. Why are silver halides used in photographic plates?
(a) Because they decompose in air
(b) Due to high-pressure conditions
(c) They decompose by light
(d) They are colorless

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16. What percentage of carbon is there in hard steel?
(a) 2-5%
(b) 0.5-1.5%
(c) 0.1-0.4%
(d) 0.01-0.04%

17. Which heavy metal is found mainly in the center of modern atomic industries?
(a) Nickel
(b) Zinc
(c) Chromium
(d) Lead

18. Which material contains the highest amount of lead?
(a) Coal
(b) Natural gas
(c) High octane petrol
(d) Low octane petrol

19. Which metals are generally used for making electrical plating?
(a) Gold, Sodium and Chromium
(b) Chromium, Copper and Nickel
(c) Nickel, Lead and Chromium
(d) Gold, Sodium and Potassium

20. Which ore contains 72% iron content?
(a) Magnetite
(b) Limonite
(c) Hematite
(d) Siderite

21. Which metal is magnetic?
(a) Calcium
(b) Tin
(c) Aluminium
(d) Magnesium

22. ‘Gunmetal’ is an alloy of—
(a) Copper, Zinc, and Lead
(b) Copper, Lead, and Silver
(c) Copper, Tin, and Zinc
(d) Copper, Iron, and Nickel

23. What is the symbol of Gold?
(a) Hg
(b) Ag
(c) Au
(d) Mg

24. What is the color of copper sulphate?
(a) Red
(b) Colorless
(c) Black
(d) Blue

25. What is the process called when a zinc layer is given to iron to prevent rusting?
(a) Sodiumization
(b) Neutralization
(c) Galvanization
(d) Sanilization

26. What is the process of increasing the weight of an oxide by absorbing oxygen from the air?
(a) Roasting
(b) Smelting
(c) Refining
(d) Calcination

27. ‘Milk of Magnesia’ contains—
(a) Magnesium carbonate
(b) Sodium bicarbonate
(c) Magnesium hydroxide
(d) Calcium hydroxide

28. What is Quartz made of?
(a) Calcium sulphate
(b) Calcium silicate
(c) Sodium sulphate
(d) Sodium silicate

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29. What percentage of gold is present in 18-carat gold?
(a) 60%
(b) 75%
(c) 80%
(d) 90%

30. Which is the purest form of iron?
(a) Steel
(b) Cast iron
(c) Pig iron
(d) Wrought iron

31. German silver is an alloy of—
(a) Copper, Nickel, and Silver
(b) Silver, Copper, and Aluminium
(c) Zinc, Copper, and Nickel
(d) Zinc, Silver, and Copper

32. If a metal is found to have good electrical conductivity even after corrosion, it is—
(a) Silver
(b) Copper
(c) Aluminium
(d) Gold

33. Which is the most malleable metal?
(a) Silver
(b) Gold
(c) Aluminium
(d) Sodium

34. In stainless steel, iron is mixed mainly with—
(a) Ni and Cr
(b) Cu and Cr
(c) Ni and Cu
(d) Cu and Zn

35. When a metal reacts with water, which gas is released?
(a) Oxygen
(b) Chlorine
(c) Hydrogen
(d) Nitrogen

36. Which metal is present in hemoglobin?
(a) Magnesium
(b) Iron
(c) Aluminium
(d) Manganese

37. The major constituent of an amalgam is—
(a) Acid
(b) Mercury
(c) Fluorine
(d) Oxygen

38. Which metal generally produces a white precipitate when mixed with water?
(a) Titanium
(b) Bromine
(c) Lead
(d) Phosphorus

39. Brass is an alloy of—
(a) Copper and Zinc
(b) Copper and Tin
(c) Copper, Nickel and Zinc
(d) Copper, Aluminium and Magnesium

40. Which metal is present in chlorophyll?
(a) Iron
(b) Zinc
(c) Aluminium
(d) Magnesium

41. What is the process of very slow corrosion of metal called?
(a) Corrosion
(b) Annealing
(c) Hardening
(d) Cold working

42. Which metal is extracted from hematite with the help of a blast furnace?
(a) Zinc
(b) Copper
(c) Aluminium
(d) Iron

43. Stainless steel contains—
(a) Fe + Cr + Ni
(b) Fe + Ni + Cu
(c) Fe + Mn + Cr
(d) Fe + Co + Ni

44. Bell Metal is an alloy of—
(a) Cu + Sn
(b) Cu + Zn
(c) Cu + Ni
(d) Cu + Mn

45. From which ore is aluminium extracted?
(a) By Bayer’s process
(b) By Dow’s process
(c) By Solvay process
(d) By Hall-Heroult process

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RRB Group D 2025 – Chemistry Focus: Metals and Alloys MCQ Practice Set

Answers to the RRB Group D 2025 score with metal & alloy MCQs