These questions of chemistry will help you in competitive exams

These chemistry questions will surely help you in your competitive exams.

1. What nature of flame is emitted when a ribbon of magnesium is combusted?
- White shiny

2. Which acid is found in vinegar?
- Acetic acid

3. Which of the following is an alien compound?
- Plaster of Paris

4. Approximate pH value of lemon juice?
- 2.2 is

5. With which substance is it beneficial to treat bee stings?
- Baking soda

6. What kind of brushing should be done to clean the mouth so that dentistry can be stopped?
- Alkaline dentin

7. Which of the following is the conductor of nonmetal electricity?
- Graphite

8. Which of the following metals can be cut with a knife?
- Sodium

9. Is zinc ore?
- Zinc blade

10. Which gas accumulates at the anode after electromagnetic decomposition of alumina?
- Oxygen gas

11. What percentage of carbon is in steel?
- 2 %

12. Which metal does not react with oxygen even at higher temperatures?
- Gold

13. Which metal starts floating when put in water?
- Calcium

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