What is Soda lime ?
Why is battery used in a motor car ?
can we use kgs instead of kg? why?
when taken to the top of a mountain, a clock will go fast or go slow or no change or stop ?
Explain planck’s hypothesis? : quantum physics
Why is mercury used in thermometers rather than water?
Explain what does hull speed mean?
At what temperature does the filament of electric bulb glows ?
When we press our hand on a table downwards, why we do feel the table pressing id greater.
Explain about Bessemer?
What are the characteristics of a musical sound?
Explain about Anemometer?
why the air temperature drops more on clear nights than on cloudy nights?