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Atom is the smallest part of the matter. It consists of three fundamental particles electron , proton and neutron. However, several subatomic particles have also been discovered by scientists. These are Positron, Neutrino, Pi-meson, Photon etc. Hence, option A is correct.
A truck travels a distance of 240 km in 8 hours. The speed of a van is 25% more than that of the truck, and the speed of a scooter is 20% more than that...
A train covers a certain distance at a speed of 60 km/h and the next same distance with a speed of 75 km/h and the next same distance with a speed of 10...
A boat can go 3 km upstream and 5 km downstream in 55 minutes. It can also go 4 km upstream and 9 km downstream in 1 hour 25 minutes. In how much time (...
A, B, and C can complete a job in 12, 15, and 20 days respectively. A and B work together for 4 days, then B and C work together for 5 days. How long wi...
A train is travelling at the rate of 54 km/hr. How many seconds it will take to cover a distance of 3/5 km?
A motor-cycle covers 100 km with a speed of 50 km/hr. find the speed of the motor-cycle for the next 100 km journey so that the average speed of the who...
In a 800 meter marathon, if Akhil beats Suraj by 120 meters and Suraj beats Puneet by 200 meters, then find the distance by which Akhil beats ‘C’.
A man travels some distance at a speed of 20 km/hr and returns at a speed of 12 km/hr. If the total time taken by him is 2 hrs 40 min, the distance is ...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 25 km/hr and 20 km/hr, respectively. If the di...
In a 1500-metre race, 'Sahil' beats 'Rohan' by '300' metres and 'Kabir' by '450' metres. If 'Rohan' and 'Kabir' participate in a 700-metre race, and 'Ka...
