Which of the following modifications is least likely to alter the rate at which a DNA fragment moves through a gel during electrophoresis?

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#Question id: 7532

#General Aptitude

A train running at 36 kmph crosses a mark on the platform in 8 seconds and takes 20 seconds to cross the platform. What is the length of the platform ?

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#Question id: 7533

#General Aptitude

A 3 m long car goes past a 4 m long truck at rest on the road .The speed of the car is 7 m/s . The time taken to go past is

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#Question id: 7534

#General Aptitude

A person wanted to travel from charabag to Alambag with an average speed of kmph by car. The distance between Charbag and Alambag is 2 km . Due to heavy traffic, he could travel at 30 kmph for the first kilometer of his journey . What should his speed his speed be for the remaining journey to achieve his average speed target of 60 kmph ?

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#Question id: 7535

#General Aptitude

Ratio between speed of boat in still water to speed of stream is 5 : 2. If 224 km is travelled by downstream in 4 hours then find the difference between speed of boat in still water and speed of stream?

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#Question id: 7536

#General Aptitude

Two stations A and B are 220km apart on a straight line. One train starts from A at 7 am and travels towards B at 20km/hr speed. Another train starts from B at 10 am and travels toward A at a speed of 20 km/hr. At what time they will meet?

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#Question id: 7537

#General Aptitude

A train 220m long passed a pole in 20 seconds. How long it will take to pass a platform 550m long?