Ball bearings are used in bicycles, cars, etc., because
Fruits stored in a cold chamber exhibit longer storage life because
Which one among the following industries is the maximum consumer of water in India?
The most important fishing grounds of the world are found in the regions where
With reference to the food chains in ecosystems, which of the following kinds of organism is / are known as decomposer organism / organisms?
1. Virus 2. Fungi 3. Bacteria
Select the correct answer using the codes given below.
Consider the following minerals:
1. Calcium
2. Iron
3. Sodium
Which of the minerals given above is/are required by human body for the concentration of muscles?