Rate downstream = 2/5 x 60 = 24 km/hr Rate upstream = 12/3 = 4 km/hr Speed of current = 1/2 (Rate downstream – Rate upstream) ⇒ 1/2 (24 – 4) km/hr = 10 km/hr
The chemical name of'Common salt’
Milk tastes sour when kept in the open for sometimes due to the formation of-
The gas usually causing explosions in coal mines is-
___________ is the process in which acids and bases react to form salts and water.
The most reactive among the halogens is-
The gas used for filling weather balloons is-
The major component of honey is-
The important ore of aluminium is-
Petroleum is a mixture of-
Manganite is an ore/mineral of
