Physics
It is easy to burst a gas-filled balloon with a needle than with a nail. It is because

Gas is reactive with the needle.
Needle exerts more pressure than nail on the balloon.
Nail exerts more pressure than needle on the balloon.
Nail is more longer than needle.

ANSWER DOWNLOAD EXAMIANS APP

Physics
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?

Jet streams are typically continuous over long distances.
It follows the wave path near the tropopause at elevations of 8 km to 15 km.
In summer, the polar front jet achieves its maximum force.
It is narrow band of high-velocity wind.

ANSWER DOWNLOAD EXAMIANS APP