Let the speed of stream be ‘x’ km/hr. So, speed of boat in still water = 4 × x = 4x km/hr Downstream speed of boat = 4x + x = 5x km/hr According to question; 5x = 90/6 = 15 Or, x = 3 Upstream speed of the boat = 4x – x = 3x = 3 × 3 = 9 km/hr Required time taken = 63/9 = 7 hours
Which of the following is/are the factors responsible for the formation of soil?
1. Topography
2. Parent Material
3. Human ...
With reference to Indian physical features, which of the statements given below is/are correct?
1. Karewas are the thick deposits of glacial clay...
Nanga Parbat is in which of the following state?
Earthquakes occur most frequently at which part of earth?
Consider the following rock systems that make up the Indian landmass:
1. Aryan
2. Dravidian
3. Archean
4. Dharwar
Wha...
Consider the following pairs of local wind and their associated features.
Which state is the largest producer of Uranium in India?
Consider the following statements:
1. The duration of the monsoon decreases from southern India to northern India.
2. The amount of annual...
What is the alternative name for black cotton soil found in Maharashtra?
Which river is the longest river in India?
