Question
Which of the following substances will turn red litmus
paper blue?Solution
Red litmus paper turns blue in the presence of a base. Baking soda solution is basic in nature, which is why it turns red litmus paper blue.
A train 150 m long passes a pole in 5 seconds and passes a platform in 11 seconds. Find the speed of the train in km/h and the length of the platform.
A train Lucknow Express leaves station A at 4 am and reaches station B at 7 am. Another train Kanpur Express leaves station B at 6 am and reaches statio...
A train 180 m long crosses a pole in 12 seconds. How much time will it take to cross a platform 270 m long?
Shatabdi express leaves Delhi Junction at a certain time. After 5 hours, Garib Rath leaves the same station and travels in the same direction at a speed...
- A train of length (L + 50) meters crosses a man running in the same direction in 25 seconds. The same train crosses a bridge of length (L - 100) meters in ...
A train started from station P and preceded towards station Q at a speed of 90 km/h. 54 minutes later, another train started from station Q and preceded...
Time is taken by two trains running in opposite directions to cross a man standing on the platform in 28 seconds and 16 seconds respectively. It took 24...
Two trains of lengths 180 m and 120 m move in opposite directions at 54 km/h and 36 km/h. Time to cross each other?
A train crosses a platform 100 m long in 60 s at a speed of 45 km/h. The time taken by the train to cross an electric pole is
What will be the length of train 1?
Statement I: If train 1 covers a standing man in 12 sec.
Statement II: if a train 1 covers a platfo...
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