Denser and rarer — task. Science State Board, Class 7.

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Choose the correct option:

1. The mass of the substance contained in a unit volume is known as __________.

Density
Volume
Metre

2. In aphelion position, the Sun is at a distance of __________.

\(147.1\ million\ kilometres\)
\(152.1\ million\ kilometres\)
light year

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