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When two trains cross each other, they cover distance equal to the sum of their lengths with relative speed. Let's take length of each train = x So, total length of both trains = 2x Relative speed = (110 – 56) × (5/18) = 15 m/sec. ∴ Total length = Time × Relative speed ⇒ 2x = (30 × 15) ⇒ x = 225 m
The element used in the manufacture of safety matches is —
Which one amongst the following is not a Green House gas?
Milk tastes sour when kept in the open for sometimes due to the formation of-
The most reactive among the halogens is-
The important ore of aluminium is-
The fuel that is used in modern submarines is -
Manganite is an ore/mineral of
The major component of honey is-
Urea is a —
___________ is the process in which acids and bases react to form salts and water.