Chemistry 2

 

1. Which of the following is present in Nail polish remover?

     (a) Citric acid
     (b) Acetone
     (c) Ethylene
     (d) Benzene

2. Heavy water is

     (a) Monoterium oxide
     (b) Polyterium oxide
     (c) Deuterium oxide
     (d) Trisium oxide

3. Name the acid present in lemon.

     (a) Phosphoric acid
     (b) Carbonic acid
     (c) Citric acid
     (d) Malic acid

4. Soda water was invented by

     (a) Tivadar Puskas
     (b) Joseph Priestley
     (c) Petrache Poenaru
     (d) James Leonard Plimton

5. Permanent magnet can be made from-  

     (a) Cobalt
     (b) Aluminum
     (c) Zinc
     (d) Lead

6. Dynamite was invented by

     (a) Ted Nelson
     (b) Jean-Antoine Nollet
     (c) Joseph Nicephore Niepce
     (d) Alfred Nobel

7. Which of the following is applied on the top of the matchsticks?

     (a) Potassium chlorate
     (b) Potassium sulphate
     (c) Red phosphorus
     (d) White phosphorus

8. Who discovered Oxygen?

     (a) Hooke
     (b) William
     (c) Heisenberg
     (d) Carl Scheele

9. If water smells bad, then that odour can be removed by adding

     (a) alum
     (b) bleach
     (c) activated carbon
     (d) deactivated nitrogen

10. The most abundant element in the Earth’s Crust is

     (a) Aluminum
     (b) Silica
     (c) Magnesium
     (d) Sodium

 

 

Answer: (1) b (2) c (3) c (4) b (5) a (6) d (7) a (8) d (9) c (10) a