General Science - Chemistry

1. Which among the following methods can be used to remove the permanent hardness in water due to calcium or magnesium sulphates?

[A] Sulphonate method
[B] Nitrate method
[C] Zeolite method
[D] None of these

2. Which among the following happens in an oxidation reaction ?

[A] Electrons are gained
[B] Electrons are lost
[C] Protons are gained
[D] Protons are lost

3. Which among the following is known as White Vitriol?

[A] Zinc Sulphate
[B] Zinc Chloride
[C] Zinc Phosphate
[D] Zinc oxide

4. Trimethylxanthine is a chemical name of a stimulant which is found in tea and coffee. What is the popular name?

[A] Thein
[B] Caffeine
[C] Theobromine
[D] Theophylline

5. Calamine is an ore of which among the following?

[A] Zinc
[B] Copper
[C] Mercury
[D] Iron

6. Potassium permanganate is used to purify water. Which among the following properties of Potassium permanganate helps in this work?

[A] sterilizing
[B] oxidizing
[C] reducing
[D] leaching

7. PVC is a polymer of ?

[A] Propane
[B] Vinyl chloride
[C] Styrene
[D] Carbonates

8. Carnotite is a mineral of which among the following metals?

[A] Lead
[B] Uranium
[C] Aluminium
[D] Iron

9. Which acid is described as HOOCCOOH?

[A] Oxalic Acid
[B] Acetic Acid
[C] Carbonic Acid
[D] Citric Acid

10. Which of the following type of Coal, has maximum carbon content?

[A] Peat
[B] Lignite
[C] Antharacite
[D] Bituminious