Chemistry Questions and answers

  1. General Science
    1. Assertions and Reasons
    2. Biology
    3. Chemistry
    4. Physics
    5. Inventions
21). The most abundant metal in the earth's crust is :
A). zinc
B). copper
C). aluminium
D). iron
22). Which of the following is the second most abundant metal in the earth's crust?
A). Copper
B). Aluminium
C). Iron
D). Zinc
23). Arrange the following metals in the decreasing order of their relative abundance in earth's crust after aluminium :
1. Calcium 2. Iron 3. Sodium 4. Magnesium

A). 1, 4, 2, 3
B). 1, 2, 4, 3
C). 2, 1, 3, 4
D). 2, 1, 4, 3
24). The most malleable metal is :
A). Silver
B). Gold
C). Aluminium
D). Sodium
25). Air is a/an :
A). compound
B). element
C). mixture
D). electrolyte


26). Balloons are filled with :
A). helium
B). oxygen
C). nitrogen
D). argon
27). Which of the following is used in beauty parlours for hair setting?
A). Chlorine
B). Sulphur
C). Phosphorus
D). Silicon
28). Which of the following is the lightest gas?
A). Nitrogen
B). Hydrogen
C). Ammonia
D). Carbon dioxide
29). Match the following :
Alloy Composition
A. Bronze 1. Lead
B. Brass 2. Copper, zinc, nickel
C. German Silver 3. Copper, zinc
D. Type metal 4. Copper, tin
Below options are given in A B C D order.

A). 2 1 3 4
B). 2 1 3 4
C). 3 2 1 4
D). 4 3 2 1
30). Gobar gas contains mainly :
A). methane
B). carbon dioxide
C). butane
D). carbon monoxide
Go to :
Total Pages : 271