Speed of train = 72 km/hr = 72 × (5/18) = 20 m / sec If the length of bridge be x metre, then ⇒ 20 = (275 + x)/45 ⇒ 275 + x = 900 ⇒ x = 900 – 275 = 625 metre
Which of the following is the most reactive element in the Periodic table?
Why is diamond significantly harder than graphite?
Gunpowder consists of a mixture of:
Ultra-purification of metals is achieved using:
How many carbon atoms are present in a molecule of propene?
Pepperonil, ethyl acetate, butyraldehyde and nitrate are some common adulterants used in ____________
Which vitamin is water-soluble?
What is the common name for Calcium Sulfate Dihydrate?
Which of the following rock is not a sedimentary rock?
What type of glass is used in the manufacturing of cooking utensils?