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Stone grafting in mango involves grafting scion on germinated stones (seeds) and is a common nursery technique.
A plane electromagnetic wave travels in vacuum along the z-direction. If the frequency of the wave is 20 MHz, what is its wavelength?
Lines joining places of equal temperature are called
When body is accelerated:
Kindly Study the following questions carefully and choose the right answer:
Transpiration is mainly effective during _______ ?
An ice block with a piece of lead embedded in it floats in water. If ice melts the water level –
Which of the following materials has the highest thermal conductivity?
A car covers a distance of 200 km in 4 hours. What is its average speed ?
A particle starts from rest and moves with uniform acceleration for 24 seconds. Let the distances covered during the first 8 seconds, the next 8 seconds...
What is the principle behind the operation of a washing machine?
The final image in a simple microscope is –