Let total work = 60 units {LCM of (15 and 12)} Efficiency of ‘A’ = 60/15 = 4 units/day Efficiency of ‘B’ = 60/12 = 5 units/day Wages received by ‘A’ and ‘B’ will directly proportion to their efficiency. So share of ‘B’ = 9000 × (5/9) = Rs 5000
On a clean glass plate, a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
Which of the following is not a natural polymer?
Naphthalene balls, commonly used as a pest repellent, are derived from which source?
_____ is the movement of chemicals in the upper layers of soil into lower layers or into groundwater by being dissolved in water.
What does Mohs scale measure?
Absolute alcohol is prepared from rectified spirit by using the following process :
The process of depositing a layer of any desired metal on another material by means of electricity is called:
Which gas is commonly used in electric bulbs to prevent oxidation?
Which bond is weakest in nature?
Who proposed the 'Law of Octaves' in the periodic classification of elements?
