Question Paper
Class / Subject: Class 10 (SSC) · Science and Technology (विज्ञान आणि तंत्रज्ञान)
Chapter: Chapter 8 — Chapter 8: Metallurgy
Time Allowed: 32 minutes
Max Marks: 16
1. What is an ore? [1]
(A) A mineral from which metal can be economically extracted
(B) Any rock
(C) A pure metal always
(D) A type of gas
2. What is gangue? [1]
(A) Unwanted impurities in ore
(B) The metal itself
(C) A type of acid
(D) A type of furnace
3. How are highly reactive metals extracted? [1]
(A) Electrolysis
(B) Reduction with carbon
(C) Heating alone
(D) Filtration
4. How are less reactive metals extracted? [1]
(A) Reduction with carbon
(B) Electrolysis only
(C) Filtration
(D) Distillation
5. What is refining used for? [1]
(A) Purifying metals of remaining impurities
(B) Adding more impurities
(C) Making metal heavier
(D) Nothing useful
6. What is an example of a refining process? [1]
(A) Electrolytic refining
(B) Only washing with water
(C) Only heating slightly
(D) No refining process exists
7. What applications use metals from metallurgy? [1]
(A) Construction and electronics
(B) Nowhere useful
(C) Only decoration
(D) Only art
8. Why learn about metallurgy? [1]
(A) To understand how metals are extracted and used
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is an ore? [1]
(A) A mineral from which metal can be economically extracted
(B) Any rock
(C) A pure metal always
(D) A type of gas
10. What is gangue? [1]
(A) Unwanted impurities in ore
(B) The metal itself
(C) A type of acid
(D) A type of furnace
11. How are highly reactive metals extracted? [1]
(A) Electrolysis
(B) Reduction with carbon
(C) Heating alone
(D) Filtration
12. How are less reactive metals extracted? [1]
(A) Reduction with carbon
(B) Electrolysis only
(C) Filtration
(D) Distillation
13. What is refining used for? [1]
(A) Purifying metals of remaining impurities
(B) Adding more impurities
(C) Making metal heavier
(D) Nothing useful
14. What is an example of a refining process? [1]
(A) Electrolytic refining
(B) Only washing with water
(C) Only heating slightly
(D) No refining process exists
15. What applications use metals from metallurgy? [1]
(A) Construction and electronics
(B) Nowhere useful
(C) Only decoration
(D) Only art
16. Why learn about metallurgy? [1]
(A) To understand how metals are extracted and used
(B) No reason
(C) It's not useful
(D) Only for tests