Class 12 Chemistry Chapter 6 Mcqs In English
आज के इस लेख में आपलोगों के लिए Class 12 Chemistry Chapter 6 Mcqs In English [General Principles and Processes of Isolation of Elements] के बारे में जानेगे | जैसा की आप लोग जानते ही आज के दौर में ऑब्जेक्टिव क्वेश्चन बहुत ही इम्पोर्टेन्ट हो गया है | क्लास 12th केमिस्ट्री ऑब्जेक्टिव क्वेश्चन दिया गया गई |
यदि आप चाहते है की General Principles and Processes of Isolation of Elements MCQs in Hindi के बारे पढ़े तो और साथ में Chemistry 12th हिंदी मध्यम के सभी चैप्टर ऑब्जेक्टिव क्वेश्चन पढ़ने के क्लिक करे Class 12 Chemistry Mcq In Hindi All Chapter
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Class 12 Chemistry Chapter 6 Mcqs In English
Q1. In Nature elements are present in
- (A) in lithosphere
- (B) In Atmosphere
- (C) In Hydrosphere
- (D) All
Show Answer
(D) All
Q2. The most abundant elements of the earth crust is
- (A) oxygen
- (B) silicon
- (C) aluminium
- (D) none
Show Answer
(A) oxygen
Q3. in the following most abundant elements of the earth crust is
- (A) iron
- (B) silicon
- (C) aluminium
- (D) none
Show Answer
(B) silicon
Q4. the most abundant metal of earth crust is
- (A) oxygen
- (B) iron
- (C) silicon
- (D) aluminium
Show Answer
(D) aluminium
Q5. In nature alkali metals are present in
- (A) free state
- (B) combined state
- (C) Both
- (D) none
Show Answer
(B) combined state
Q6. Cinnabar is
- (A) Hgs
- (B) Pbs
- (C) Zns
- (D) H2s
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(A) Hgs
Q7. Bauxite is an ore of
- (A) fe
- (B) hg
- (C) al
- (D) sn
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(C) al
Q8. galena is an ore of
- (A) Fe
- (B) al
- (C) hg
- (D) pb
Show Answer
(D) pb
Q9. molecular formula of galena is
- (A) pbs
- (B) hgs
- (C) zns
- (D) cu2s
Show Answer
(A) pbs
Q10. in the following which is an ore of aluminium
- (A) hematite
- (B) Bauxite
- (C) galena
- (D) Cinnabar
Show Answer
(B) Bauxite
Class 12 Chemistry Chapter 6 General Principles and Processes of Isolation of Elements MCQs
Q11. The impurities present in an ore is called
- (A) mineral
- (B) slag
- (C) flux
- (D) gangue
Show Answer
(D) gangue
Q12. the whole process of obtaining a pure metal from its ore is called
- (A) Extraction
- (B) metallurgy
- (C) concentration
- (D) None
Show Answer
(B) metallurgy
Q13. Gypsum salt is an ore is
- (A) Zn
- (B) ca
- (C) fe
- (D) Al
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(B) ca
Q14. The process of removal of impurities from any ore is called
- (A) metallurgy
- (B) concentration
- (C) Extraction
- (D) none
Show Answer
(B) concentration
Q15. forth floating method is used to concentrate the
- (A) sulphide ore
- (B) halide ore
- (C) carbonate ore
- (D) oxide ore
Show Answer
(A) sulphide ore
class 12 chemistry chapter 6 objective questions in English
Q16. In the following which process take place in the absence of air
- (A) roasting
- (B) calcination
- (C) hydraulic washing
- (D) leaching
Show Answer
(B) calcination
Q17. In the following which process take place in the presence of air
- (A) roasting
- (B) calcination
- (C) hydraulic washing
- (D) leaching
Show Answer
(A) roasting
Q18. calcination and roasting both process take place in
- (A) blast furnace
- (B) reverberatory furnace
- (C) both
- (D) none
Show Answer
(B) reverberatory furnace
Q19. in froth floating method fatty acid is
- (A) stabillizers
- (B) slag
- (C) colietctors
- (D) flux
Show Answer
(C) colietctors
Q20. roasting is used for
- (A) hydeo oxide ore
- (B) carbonate ore
- (C) sulphide ore
- (D) None
Show Answer
(C) sulphide ore
Q21. formula of horn silver is
- (A) Agcl
- (B) AgF
- (C) Agbr
- (D) None
Show Answer
(A) Agcl
Q22. In the following which is chief ore of iron
- (A) hematite
- (B) magnetite
- (C) siderite
- (D) All
Show Answer
(D) All
Q23. In froth floating method which is stabillizers
- (A) fatty acid
- (B) cresol
- (C) aniline
- (D) Both a and C
Show Answer
(D) Both a and C
Q24. copper metal is purified by
- (A) electroytic refining
- (B) zone refining
- (C) chromatography
- (D) None
Show Answer
(A) electroytic refining
Q25. in the following which metal is purified by mond's process
- (A) zr
- (B) Ti
- (C) Ni
- (D) All
Show Answer
(C) Ni
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Mcq on metallurgy class 12 pdf with answers
| Pattern Based | Bihar Board, Patna |
| Class | 12th or Inter |
| Article Name | Class 12 Chemistry Chapter 6 Mcqs In English |
| Category | Class 12 Chemistry Chapter Wise Objective Question |
| Chapter Name | General Principles and Processes of Isolation of Elements |
| Subject | Class 12 Chemistry |
| Class 12th English Summary | BSEB Class 12th English Summary |
| Type Of Question | Objective Question || 01 Marks |
| Script | Hindi And English Medium |
| Published On | Bihari Academy |
