Is Matter Around Us Pure ? — Science STD 9 — Question

Rutherford’s α-particle scattering experiment led to the discovery of the ______. (Nucleus, Electron, Proton)

64g of oxygen gas contains _________ Moles of oxygen atoms. (4, 2, 8)

A mixture of two or more miscible liquids, with a boiling point difference of less than 25K, can be separated by ________. (Fractional distillation, Filtration, Sublimation)

The sum of the potential and kinetic energies of a body is called __________ energy. (Chemical, Mechanical, Nuclear)

Temp on Kelvin scale = Temp on Celsius scale + ________. (273, 212, 273)

Newton’s first law of motion is also called Galileo’s law of __________. (Friction, Motion, Inertia)

________ are forms of complex tissue. (Xylem, Parenchyma, Epidermis)

Echoes are caused by the ______ of sound.

Fill in the following blanks with suitable words:
If a body moves with uniform velocity, its acceleration is ________.