Both nuclear fusion and nuclear fission reactions

Both are nuclear reactions.

Explanation:

Fission reaction: when a slow moving neutron strike with a heavy nuclei then it split up into two lighter and stable nuclei with the emission of three neutron and huge amount of energy is called nuclear fussion. e.g, U235 isoptope on bombardment of neutron split up into to two other stable nuclei.

Fussion reaction: combination of two or more nuclei to form another nuclei and evolve huge amount of energy is called fussion reaction. for example formation of helium nuclei.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.