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Distance = 280 km Speed of train 1 = 15 km/hr Speed of train 2 = 25 km/hr Relative speed = 15 + 25 = 40 km/hr Therefore, speed = distance/time ⇒ 40 = 280/Time ⇒ Time = 280/40 = 7 hrs
Terylene is a condensation polymer of ethylene glycol and which acid?
The reaction of an aldehyde with Tollens’ reagent results in:
Bleaching powder is represented as ______.
Which of the following isotope of hydrogen is radioactive in nature?
In a compound, the elements are always present in definite proportions by:
The orbital velocity of a satellite depends on:
Activated charcoal is used to remove colouring matter from pure substances by which of the following process?
Which reaction represents the correct method of extracting iron from its ore in a blast furnace?
What is the pH of a neutral solution at 25°C?
Biofertilizers convert nitrogen to:
