Practice Chemistry gk - general science mcq Online Quiz (set-2) For All Competitive Exams
Q-1) Which reducing agent is used in chemical reduction?
(a)
(b)
(c)
(d)
Q-2) Which of the following do not react with water at all?
(a)
(b)
(c)
(d)
Q-3) Which one of the following is the hardest metal?
(a)
(b)
(c)
(d)
Q-4) Which one of the following metals is accessed in the native state?
(a)
(b)
(c)
(d)
Q-5) Which one of the following is also called Stranger Gas?
(a)
(b)
(c)
(d)
Q-6) The chief ore of aluminium is
(a)
(b)
(c)
(d)
Bauxite is Al2O3 .2H2O.
Q-7) Which of the following non-metals sublimes on heating ?
(a)
(b)
(c)
(d)
Iodine is a sublime substance
Q-8) A non metal that catches fire at room temperature is-
(a)
(b)
(c)
(d)
Q-9) Which one of the following metals is liquid at room temperature?
(a)
(b)
(c)
(d)
Q-10) Which is the most reactive metal?
(a)
(b)
(c)
(d)
Q-11) Which allotropy of carbon is in rigid three- dimensional structure?
(a)
(b)
(c)
(d)
Q-12) Which of the following metals reacting with sodium hydroxide solution produce hydrogen gas?
- Cu
- Al
- Fe
- Zn
(a)
(b)
(c)
(d)
Q-13) Which one of the following is the softest?
(a)
(b)
(c)
(d)
Q-14) Match List-I with List-II:
List-I (Industrial Process)
List-II (Industry)
A. Cracking
1. Rubber
B. Smelting
2. Petroleum
C. Hydrogenation
3. Copper
D. Vulcanization
4. Edible Fats
Select the correct answer using the codes given below the list:
| List-I (Industrial Process) | List-II (Industry) |
| A. Cracking | 1. Rubber |
| B. Smelting | 2. Petroleum |
| C. Hydrogenation | 3. Copper |
| D. Vulcanization | 4. Edible Fats |
(a)
(b)
(c)
(d)
Q-15) Doctors, Artists and Sculptors use Calcium Sulphate which is popularly known as
(a)
(b)
(c)
(d)
Q-16) Chemically ‘Plaster of Paris’ is
(a)
(b)
(c)
(d)
Q-17) The chemical name of limestone is
(a)
(b)
(c)
(d)
Q-18) Calcination is the process of heating the ore
(a)
(b)
(c)
(d)
Q-19) Which one of the following pairs of metals constitutes the lightest metal and heaviest metal, respectively?
(a)
(b)
(c)
(d)
Q-20) Which of the following non-metals has shining lustrous surfaces?
(a)
(b)
(c)
(d)