What is the orientation of the two strands of a DNA molecule with respect to each other?
The two strands of a DNA molecule are oriented anti-parallel to each other. This means the 5’ end of one strand is located with the 3’ end of the other strand at the same end of a DNA molecule
A train started from station P and preceded towards station Q at a speed of 60 km/h. 35 minutes later, another train started from station Q and preceded...
Two trains, whose respective lengths are 120 metres and 180 metres, cross each other in 15 seconds when they are moving in opposite directions and in 5...
Two trains A and B, were proceeding in the same direction on parallel tracks at 20 km/hr and 74 km/hr respectively. A man noticed that it took exactly 1...
A train 450 metre long takes 60 sec to cross a man running at a speed of 7 km/hr in the direction opposite to that of train. What is the speed of the tr...
Ratio of the lengths of two trains ‘X’ and ‘Y’ is 3:4 respectively and the ratio of time taken by them to cross a pole is 1:2 respectively. If s...
Two trains of equal lengths take 20 seconds and 30 seconds respectively to cross a telegraph post. If the length of each train be 240 metres, in what ti...
Train ‘A’ running with a speed of 63 km/hr can cross a standing goods train of 4 times its length in 24 seconds. Find the time taken by 150 metres l...
A train 325 metre long takes 45 sec to cross a man running at a speed of 6 km/hr in the direction opposite to that of train. What is the speed of the tr...
A train running at 90 km/h crosses an electric pole in 18 seconds and a platform in 55 seconds. What is the length of the platform?
There are two trains A and B. A start from point X at 6 AM towards point Y. Another train B starts at 7 AM from point X. If they meet at 8 AM and...
