A rocket needs the speed of …….. to escape from earth’s gravity ?

Related Mcqs:

The variety of coal in which the deposit contains recognizable traces of the original plant material is____________?

A. bitumen B. anthracite C. lignite D. peat...

The 2018 Nobel Prize in Physiology or Medicine has been awarded jointly to James P Allison and Tasuku Honjo for their discovery of which cancer?

A. Chemotherapy B. Radiation C. Surgery D. Immunotherapy...

Which statement about sound is true?

A. Sound can’t travel through  vacuum B. Sound can’t travel through  glass C. Sound can’t travel through  water D. Non of theses...

Which of the following bonds are weakest in nature?

A. Single bond B. Double bond C. Triple bond D. Hydrogen bond...

The process of splitting water molecules in the presence of light energy is called_________?

A. Electrolysis B. Photolysis C. Radiolysis D. Thermolysis...