Proportional Reasoning-2Class 8 Mathematics MCQs

Which of the following pairs of ratios is proportional?

On a map, the Representative Fraction (RF) is given as $1:50,000$. What does this signify?

A recipe for a fruit punch requires mixing juice, soda, and syrup in the ratio $5:3:1$. If you use 1.5 litres of soda, how much juice is needed?