WorksheetsClass 9 Science
Total questions: 25
Worksheet time: 54mins
Water vapour at 373 K have more (a) than water at the same temperature.
SI unit of pressure
Ice floats on water because the density of ice is _______ than that of water
Molecular formulae of Ammonium chloride
What is the physical state of water at following temperature?
(1) 300 K
(2) 273K
(3) 473 K
_________ named the smallest part of a matter as paramanu.
The chemical name of K2SO4 .
The ratio by mass hydrogen and nitrogen in Ammonia
State the molecular formula of ammonium sulphate.
Name the element which is used in Thermometer.
What is atomicity? State the atomicity of nitrogen, ozone and aluminium.
What is the atomicity of K2CrO4?
Who discovered proton?
Which isotope is used in the treatment of goitre?
Canal rays are negatively charged. State whether this statement is true or false.
Rutherford' s alpha particle scattering experiment was responsible for the discovery of ......
State the number of isotopes of hydrogen.
How many times the mass of proton is more than the mass of electron?
Name the term of combining capacity of an element.
Which isotope is used in the treatment of cancer?
How many maximum electrons can be accommodated in the outermost orbit of an element?
__________ particles are fast moving nucleus of helium.
The word ' mole ' was introduced by____________.
What is called the phenomenon of changing of a liquid into vapours at any temperature below it's boiling point?
In which physical state has the substance a definite shape and size?
