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Who proposed the planetary model of the atom with electrons orbiting the nucleus?
What is the name of the process by which ammonia is produced on an industrial scale?
What is eutrophication?
According to the kinetic theory of gases, the pressure exerted by a gas is due to
What is the sum of the oxidation numbers in a neutral compound?
Which of the following reactions would be expected to have the highest entropy change?
Which noble gas is radioactive and is produced as a decay product of uranium and thorium?
What happens to the position of equilibrium, if a reversible exothermic reaction is subjected to a decrease in temperature?
Metal + acid ?¸hydrogen gas.
Acids turn blue litmus red.
Electrons = protons = atomic number.
Neutral pH = 7.
Nitrogen ~78%.
Na from 'natrium'.
Which of the following sketches is a graphical representation of Boyle's law?
Which of the following scientists formulated the law of conservation of mass?
The first definition of an element was made by
Charcoal is used in the decolourization of sugar because of its
If the molar mass of X(HCO3)\(_{2}\) is 162 g mol\(^{-1}\), determine the relative atomic mass of X.
[H = 1.0, C = 12.0, 0 = 16.0]
Which of the following processes occur during fractional distillation of petroleum?