1. In a very low temperature which from the following will freeze at last? 

A. River water
B. Canal water

C. Sea water

D. Water in a lake

2. The nearest planet to the Earth is _________.

Earth

A. Venus

B. Mercury
C. Mars
D. Moon

3. The planet that moves round the Sun at the highest speed is? 

A. Jupiter
B. Venus
C. Mars

D. Mercury