Question
Which nutrient is beneficial for crop
growth?Solution
Aluminum (Al), cobalt (Co), sodium (Na), selenium (Se), and silicon (Si) are considered beneficial elements for plants: they are not required by all plants but can promote plant growth.
The average speed of a bus is 6/7 of the average speed of a car which covers 3500 km in 60 hrs. What is the average speed of the bus?Â
Two trains, A and B, are moving in opposite directions at speeds of 45 km/h and 60 km/h, respectively. The lengths of the trains are 120 meters and 150 ...
- A bus normally covers 120 metres in 4 seconds. How much distance (in km) can the bus cover in 5 hours if it travels at 75% of its normal speed?
The ratio of the speed of two bus P and Q is 4 :7. If P takes 180 minutes more than Q to cover a certain distance, the find then actual time taken by Q ...
From the top of a multi-storey building, the angle of depression to the top of a smaller building (which is 20 meters tall) is 45°. The distance betwee...
- A cyclist travelling at three-fourths of his usual speed takes 12 minutes longer than his usual time to cover a certain distance. Calculate the usual time ...
A cyclist travels from town A to town B at a speed of 20 km/h and returns to town A at a speed of 30 km/h. If the total distance between the towns is 12...
Tanuj can make a toy in 6 hrs. 50 minutes and 26 seconds. How much time will he take to make 5 such toys?
B starts 4 minutes after A from the same point, for a place at a distance of 7 miles from the starting point. A on reaching the destination turns back a...
Ram needs to travel from point A to point B. If he travels at a speed of 24 km/h, he arrives 2.5 hours later than expected. On the other hand, if he in...
Relevant for Exams:
