Question
Which of the following gas usually causes explosions in
coal-mines?Solution
Methane explosions occur in coal-mines when a buildup of methane gas, a by-product of coal, comes into contact with a heat source, and there is not enough air to dilute the gas to levels below its explosion point.
Speed of a car and a bus is 24 km/h and 14 km/h, respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time ...
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A bus starts running with the initial speed of 6 kmhr and its speed increases every hour by certain amount. If it takes 14 hours to cover a distance of ...
In a 200-metre race, 'P' beats 'Q' by 40 metres and 'Q' beats 'R' by 20 metres. By how much distance would 'P' beat 'R', in the same race?
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A, B, and C run around a Circular track starting from the same point simultaneously and in the same direction at 6 km/h, 12 km/h, and 18 km/h respect...
The speed of a car is 24% more than that of a bike. Both of them start from a same point. After travelling for 5 hours, the speed of the bike is increas...
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