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Start learning 50% faster. Sign in now1.Replace 'are' with 'were'-However, recently scientists have discovered that soon after the Big Bang, and before anything else appeared in the universe, primordial sound waves 'were' produced. 2.Replace 'calm' with 'calms'- Music 'calms' the mind and produces a great sense of well being and euphoria.
Which of the following instruments is used to measure humidity?
Which vitamin is also known as Vitamin-B2?
With the increase of pressure, the boiling point of any substance –
Which of the following statement is correct?
I. Speed of sound in steel is more than the speed of sound in glass.
II. Speed of sound ...
For a system of particles, the center of mass moves:
The escape velocity from a planet is 11.2 km/s. What is the minimum kinetic energy per kg needed to escape?
1. 6.3 x 107 J/ Kg
<...Which of the following is not a purpose of transpiration?
Metals are good conductors of electricity because –
Calculate the work done when a force of 10 N moves an object 5 m at 60° angle to direction of force.
The base of an electric iron is brightly polished mainly -