1. Which of the following is a liquid at normal temperature?

[A] lead

[B] mercury

[C] Nickel

[D] tin

 Answer: [B] Mercury

2. Which of the following metals is the heaviest?

[A] Silver

[B] copper

[C] gold

[D] lead

 Answer: [D] lead

3. Is the compound element useful in photography?

[A] Silver Nitrate

[B] silver bromide

[C] iron sulfate

[D] None of these

 Answer: [B] Silver Bromide

4. Which of the following metals is the most efficient conductor of electricity?

[A] gold

[B] Silver

[C] copper

[D] zinc

 Answer: [C] copper

5. Steel is added to provide hardness?

[A] Carbon

[B] Manganese

[C] Silicon

[D] chromium

 Answer: [D] Chromium

6. Iron load on rust?

[A] increases

[B] decreases

[C] changes

[D] There is no change

 Answer: [A] increases

7. Iron is obtained by which of the following minerals?

[A] limestone

[B] Pitch Bland

[C] Monazide Sand

[D] Hematite

 Answer: [D] Hematite

8. The chemical name of limestone is?

[A] calcium chloride

[B] calcium oxide

[C] calcium carbonate

[D] calcium sulfate

 Answer: [C] calcium carbonate

9. Which chemical is used as a stabilization in photography?

[A] sodium sulfate

[B] sodium thiosulfate

[C] Ammonium Persulfate

[D] Borax (icing)

 Answer: [B] Sodium Thiosulfate

10. From which mineral was radium obtained?

[A] limestone

[B] Pitch Bland

[C] rutile

[D] hematite

 Answer: [B] Pitch Bland