Question
The effluents of which among the following industries
are considered to be the main cause for lowering the pH value of river water?Solution
The correct answer is A
A train travels a certain route in 250 minutes at a speed of 48 km/h. If the same journey is done by bus in 5 hours, what should be the speed of the bus?
A car takes 15 hours less to travel from point 'G' to point 'H' at a speed of 45 km/h than it takes to travel at 15 km/h. If 60% of the distance is cove...
A bike completes a journey in 4hrs with a speed of 60 km/hr. At what speed must it travel to complete the journey in 6 hrs?
The tops of two poles of height 60 metres and 35 metres are connected by a rope. If the rope makes an angle with the horizontal whose tangent is 5/9 met...
A cyclist noticed another cyclist ahead moving at 8 m/s and increased his speed to 14 m/s to catch him. If the distance between them was 150 metres, fin...
A train travels from station ‘P’ to station ‘Q’ at a constant speed. If its speed was increased by 20 km/h, it would have taken 1 hour less to c...
A person goes 15 km at 5 km/h and returns 15 km at 3 km/h. Find the average speed for the whole journey.
C can do a piece of work in 20 days, and D can do the same work in 25 days. They start working together, but after 8 days, C leaves. In how many more da...
If a person walks 25% more than of his usual speed, reaches his distance 90 minutes before. If the destination is 495 km away, then the usual speed of a...
John cycles at 10 km/h to reach his destination at 2 PM. If he travels at 15 km/h, he will reach at 12 noon itself. At what speed should he travel to re...
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