Q. Alloys in which mercury is one of the metals are called
1 amalgams
2 emulsions
3 mixtures
4 solders
Ans: 1
Q. Alloy steel containing chromium to resist rusting,is known as
1 wrought iron
2 cast iron
3 hard steel
4 stainless steel
Ans: 4
Q. All pottery ware made from common clay and which are not covered with glaze is called
1 Terracotta
2 Cermets
3 Enamels
4 Fire Bricks
Ans: 1
Q. All the following are examples of chemical change,expect
1 magnetising of iron nail
2 rusting of iron rod
3 digestion of food
4 souring of milk
Ans: 1
Q. All noble gases are
1 colourless
2 colourless
3 colourless and odourless
4 light blue
Ans: 3
Q. Alkali metals belong to the
1 s-block
2 p-block
3 d-block
4 f-block
Ans: 1
Q. Alcohol Contains
1 nitrogen, hydrogen, oxygen
2 carbon, hydrogen, oxygen
3 oxygen, carbon, nitrogen
4 hydrogen, chlorine, oxygen
Ans: 2
Q. Air is a/an
1 element
2 compound
3 mixture
4 colloid
Ans: 3
Q. Absolute alcohol is
1 100% proof
2 95% alcohol and 5% water
3 200% proof
4 rectified spirit
Ans: 3
Q. A ß particle has
1 unit positive Charge
2 unit negative charge
3 no charge
4 two unit positive charge
Ans: 2
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