How many electrons are involved in the oxidation by KMnO4 in basic medium?
The correct answer is B
A person travels a distance of 60 km, some distance he travels by bus and rest of the journey by walking, then he takes 4 hours and 20 minutes. If he ha...
Time is taken by two trains running in opposite directions to cross a man standing on the platform in 30 seconds and 22 seconds respectively. It took 25...
Train X crosses a stationary train Y in 45 seconds and a pole in 25 seconds with the same speed. The length of the train X is 250 meters. What is the le...
Two trains, A and B, cross each other in 30 seconds and 50 seconds respectively, when running in opposite and the same direction respectively. If the sp...
Two trains 200 metres and 100 metres in length are running towards each other on parallel tracks, one at the rate 50 km/hr and another at 40 km/hr. In h...
Train A running at a speed of 30 km/hr crosses train B in 20 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B is...
Two trains of same length are running in parallel tracks in the same direction with speed 56 km/hr and 110 km/hr respectively. The latter completely cro...
A 140 m long train crosses another 260 m long train running in the opposite direction in 15 seconds. If the shorter train crosses a pole in 14 seconds, ...
A train 420 metre long takes 21 sec to cross a man running at a speed of 3 km/hr in the direction same to that of train. What is the speed of the train?
Ratio of the lengths of two trains ‘X’ and ‘Y’ is 6:7 respectively and the ratio of time taken by them to cross a pole is 4:5 respectively. If s...
