Atomic StructureEveryday Science
An atom is electrically neutral because
neutrons balance the protons and electrons.
nuclear forces stabilize the charges.
the numbers of protons and electrons are equal.
the numbers of protons and neutrons are equal.
the numbers of protons and electrons are equal.
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Vitamin C is soluble inA. fat
B. water
C. ethers
D. phenols
Which of the following atom has the shortest atomic radius
A. N
B. F
C. O
D. B
The density of air in the atmosphere is
A. uniform
B. not uniform
C. zero
D. none of above
In the body, the weight of blood is about
A. 1/12th of body
B. 1/5th of body
C. 1/8th of body
D. 1/4th of body
Which substance is present in fuel?
A. Iron
B. Gold
C. Carbon
D. Copper
The energy stored in coal is
A. kinetic energy
B. potential energy
C. chemical energy
D. nuclear energy
A human breath per minute is
A. 16-30 times
B. 16-20 times
C. 15-20 times
D. 15-18 times
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