Answer:
In our solar system, Mercury and Venus are inferior planets: their orbits are entirely inside the Earth's orbit. When seen from the Earth, inferior planets go through phases, like the Moon's. An inferior planet on the same side of the sun as the Earth appears dark and is not easy to see.
Explanation:
yes it is true
The smaller the surface area, the faster the rate of reaction will be. Think of ice. A full sized ice cube will take longer to melt than crushed ice. Crushed ice will melt much quicker because there is more surface area exposed. So if the surface area can be increased, so will the rate of reaction.
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An insoluble solid formed during a reaction is called a Precipitate.
Answer : 
and 
Explanation:
According to Boyle's law, it states that pressure is directly proportional to the volume of the gas for a fixed amount of gas and at constant temperature.
The equation given by this law is:
where,
are initial pressure and volume.
are final pressure and volume.
Thus the correct relation for pressure and volume for a fixed amount of gas at constant temperature according to Boyle’s law is and
