9th Chemistry Unit 16 Metals And Their Extraction MCQs Sindh Board

 9th Grade Chemistry Chapter 16 Metals & Their Extraction Sindh Board MCQs Notes Online Chapter Wise Question Answers. Sindh Boards Chemistry Subject Notes For Exams Preparations Karachi, Jamshoro, Sindh Boards. Chemistry class Ninth sindh board notes Unit 16 Metals And Their Extraction Most Repeated Multiple Choice Questions With Answers. Chemistry notes for class IX sindh board karachi Boards.

9th Chemistry MCQs

Q.1: FeCO₃ is the formula of?

1. Azurite
2. Limonite
3. Magnetite
4. Spathic

D

Q.2: Iron ores are found in?

1. Chitral
2. Dadu
3. Attock
4. Tharparker

A

Q.3: Formula of limonite is?

1. Fe₃O₄
2. Fe₂OH₂
3. Fe₂O₃
4. Fe₂O₃.H₂O

D

Q.4: Cu₂S.CuS.FeS is the formula of?

1. Copper Phrite
2. Cuperite
3. Malochite
4. Bornite

D

Q.5: Azurite is an ore of?

1. Iron
2. Aluminum
3. Copper
4. Chromium

C

Q.6: Copper has been known since to?

1. Gold age
2. Brass age
3. Stone age
4. Bronze age

D

Q.7: Kaolin and Potash Flspar are the ores of?

1. Aluminum
2. Copper
3. Potassium
4. Iron

A

Q.8: Corrundum is the?

1. Oxide ore of Al
2. Sulpahte ore of Al
3. Flouride ore of Al
4. Silicate ore of Al

A

Q.9: FeO.Cr₂O₃ is the formula of?

1. Limonite
2. Haematite
3. Chromite
4. Iron Pyrite

C

Q.10: Na₃AlF₆ is the formula of?

1. Potash mica
2. Cryolite
3. Bauxite
4. Alunite

B

Q.1: Formula of corundum is?

1. Al₂O₃2SiO₂.2H₂O
2. Al₂O₃H₂O
3. AlCI₃
4. Al₂O₃

D

Q.11: ZnS is the formula of?

1. Azurite
2. Zinck Pyrite
3. Zinc blend
4. Zinc Sulphate

C

Q.12: Pig iron contains 0.05-1.5%?

1. Iron
2. Phosphorous
3. Carbon
4. Silica

B

Q.13: %age of carbon in pig iron is?

1. 0.5%
2. 0.05-1.0%
3. 1.2%
4. 3.5-4%

D

Q.14: Copper pyrite ore contains copper?

1. 5%
2. 4%
3. 6%
4. 7%

C

Q.15: CuS is the formula of?

1. Cuperite
2. Copper Pyrite
3. Azurite
4. Copper glance

D

Q.16: Mild steel contains 0.15% to 0.25%.?

1. Iron
2. Sulphur
3. Silicon
4. Carbon

D

Q.17: Tungsten and vanadium are present in?

1. Wrought iron
2. Cask Iron
3. Brass
4. Steel

D

Q.18: Cu₂O is the formula of?

1. Di copper oxide
2. Chalcocite ore
3. Copper pyrite ore
4. Cuperite ore

D

Q.19: Froth floatation process is used for?

1. Smelting of ore
2. Roasting of ore
3. Refining of ore
4. Concentration of ore

D