RRB Group D Model Paper 3 with solutions

(3) Raindrops fall on the Earth due to Earth’s gravitational force, which is non-contact in nature. In rest of the options, muscular force is being used, which is a contact force. Bullock moves due to muscular force of the bulls; blacksmith is using muscular force to beat the iron; birds use muscular force (wings attached to pectoral muscles) to fly.