Question
A train starting from rest with a uniform acceleration
attains a speed of 108 km/h in 5 minutes. The distance covered by the train in attaining the speed isSolution
Distance = speed × time = 108 × 5/60 = 9 km Therefore, distance in meter = 9 × 1000 = 9000 m
The gas that usually causes explosions in coal mines is
Which one of the following contributes largely to the greenhouse effect?
Which one of the following is not a greenhouse gas?Â
Natural rubber is the polymer of:
Which mineral is the ore Of aluminium?
Chemical name of bleaching powder is
The most abundant constituent of atmospheric air is
Brass is made of
Wood spirit is
When a spoon is to be electroplated with nickel the spoon is