Welcome to the Science Quiz 139
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This is a timed quiz. You will be given 15 seconds per question. Are you ready?
Which of the following are the ingredients of gun metal?
The group of metals Fe, Co, Ni may best called as?
The gases used in different types of welding would include?
Permanent hardness of water may be removed by the addition of ?
Non stick cooking utensils are coated with?
For galvanizing iron which of the following metals is used?
Chlorophyll is a naturally occurring chelate compound in which central metal is?
Which of the following was to be discovered first in the chromospheres of the sun?
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