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Solution In the given sentence, the word ‘platelets’ is used incorrectly as it refers to a type of cell in human bodies. The correct words here will be ‘disturbance’ and ‘variation’ that denote some unusual occurrence in planet’s outer layers. The word ‘elementary’ is again incorrect as the sentence requires a noun. The words ‘compounds’ and ‘substances’ are correct words here. Hence, the correct answer is option B.
The ratio of the speeds of a bus and a car is 5: 12. If the car covers 504 km in 7 hours, what is the speed of the bus in km/h?
How much time a train 200 metres long running at the speed of 72 km/hr take to cross a bridge 180 metres in length?
The aeroplane flies along a Square field @ 100, 200, 300 and 400 km/hours respectively. Then find the Average speed of the aeroplane during the whole jo...
Two cars X and Y start from two places A and B respectively which are 800 km apart at 8 a.m. Both the cars run at an average speed of 50 km/hr towards e...
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...
A thief stole Mayank’s purse and the theft is reported at 10 am and police started chasing the thief at 1:00pm. How much time the police took to c...
If 180-meter-long train crosses a pole in 18 seconds, find the speed of train in kilo meter/hour.
Train B crosses Train A, which is approaching from the opposite direction, in 28 seconds. If the combined length of Train A and Train B is 2240 meters, ...
A train travelling at a uniform speed, clears a platform 240 meters long in 10 seconds and passes a telegraph post in 6 seconds. Find the length of the ...
A carriage travels in the fog passed along a man who was walking @ 3kmph in the same direction. He could see the carriage for 4 minutes and it was visib...