Question
A cistern has two pipes one can fill it with water in 24
hours and other can empty it in 9 hours. In how many hours will the cistern be emptied if both the pipes are opened together when (5 )/8th of the cistern is already filled with water?Solution
If both pipes are open, then total units per hour empty the tank (A-B) = 3 - 8 = -5 units According to question, Tank has 5/8 of its total capacity in the beginning = 5/8 × 72 = 45 units Time taken to empty the tank = `45/(-5)` = 9 hours
Thermal efficiency of diesel engine is
Damaging stage of white grub is
When is dehaulming done in potato crop?Â
What does unitary income elasticity of demand (Ei=1) imply?
Metals generally have very high melting point. The metal which is exception to this property of metals is-
The unit of spectral energy fluence rate is
For the process of cDNA synthesis, the eukaryotic ___ is used as the template for the generation of  DNA.Â
What is the name of the group of fungi which lead to spoilage of food having high sugars and high salt concentration like dried fruits, jam, honey?Â
Kyoto Protocol is an international treaty related to
The art of training plants into different shapes is known as