Chemical Building Blocks of Life UPSC Questions

Biology

Chemical Building Blocks of Life MCQ Questions

1.
Which is left at room temperature during summer?
A.
Food
B.
Chips
C.
Milk
D.
Cheese
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ANSWER :
C. Milk
2.
Iron tawa /Pan / Nail is left exposed to humid
A.
Atmosphere
B.
Thermosphere
C.
Exosphere
D.
Material
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ANSWER :
A. Atmosphere
3.
What change occurs when we can say that a chemical reaction has taken place?
A.
Water
B.
Mechanical
C.
Electrical
D.
Chemical
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ANSWER :
D. Chemical
4.
Magnesium ribbon burns with a dazzling white flame and changes into a
A.
Grey Powder
B.
Pink Powder
C.
White Powder
D.
Black Powder
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ANSWER :
C. White Powder
5.
What is the name of magnesium ribbon white powder?
A.
Dioxide
B.
Magnesium Oxide
C.
Carbon Dioxide
D.
Hydrogen Oxide
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ANSWER :
B. Magnesium Oxide
6.
________________ is burnt in oxygen and gets converted to magnesium oxide.
A.
Oxygen Ribbon
B.
Electrical Ribbon
C.
Chemical Ribbon
D.
Magnesium Ribbon
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ANSWER :
D. Magnesium Ribbon