The speed of a boat in downstream is 20% more than speed of boat in still water. If the boat travels a distance of 90 km upstream in 15 hours then find the time taken by the boat to cover a distance of 252 km in downstream.
What is the role of pneumatophores?
What is the ph of blood?
Extra number of which chromosome is responsible for Down’s syndrome (Mongoloid Idiot) in man.
Thiamine deficiency may result in :
The human eye is most sensitive to yellow-green light having wavelength -
The ______ fight against germs that may enter our body.
How many molecules of ATP are released from one glucose molecule during anaerobic respiration?
Which of the following is NOT a symptom of Amoebiasis?
Which of the following is a technique by which plants get rid of waste material?
I. Storing as gum and resin
II. Removed in the falling leaves
In animals like Annelids and Molluscs, organs are associated to form functional systems, each concerned with a specific physiological function. This pat...
