Sound travels_______ in solid materials then liquid?

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Which triplet in DNA codes for valine ?

A. CTT B. AGU C. CAT D. AAT E. None of these...

A moderator is used in nuclear reactor in order to ?

A. Accelerate the neutrons B. Slow down the speed of the neutrons C. Increase the number of elections D. Decrease the number of electrons E. None of these...

Myopia is a defect of Human eye. it can be corrected by using a lens called?

A. Convex lens B. Concave lens C. Cylindrical lens D. Plano convex lens E. None of these...

ECG is used for the diagnosis of aliments of ?

A. Brain B. Heart C. Kidneys D. Lungs...

For being able to see three-dimensional pictures we have to use_________?

A. A binocular B. A camera C. An epidiascope D. A stereoscope...