Sample Test Chemistry

1
The number of atoms present in one mole of an element is equal to Avogadro number. Which of the following element contains the greatest number of atoms?
  • 1 4g He
  • 2 46g Na
  • 3 0.40g Ca
  • 4 12g He
2
A given compound always contains the same elements in the same proportion by mass is given by:
  • 1 Avogadro's Law
  • 2 Law of John Dalton
  • 3 Law of Joseph Proust
  • 4 Gay Lussac's Law
3
If 500 mL of a 5M solution is diluted to 1500 mL, what will be the molarity of the solution obtained?
  • 1 1.5 M
  • 2 1.66 M
  • 3 0.017 M
  • 4 1.59 M
4
The balancing of chemical equations is in accordance with:
  • 1 Gay Lussac's Law
  • 2 Avogadro's Law
  • 3 Law of Joseph Proust
  • 4 Law of John Dalton
5
The principle postulates a hypothetical process in which an atom is "built up" by progressively adding electrons are :
  • 1 Afbau principle
  • 2 pauli priciple
  • 3 Hund’s rule
  • 4 None of these
6
It can be taken that if two or more orbitals of equal energy are available, electrons will occupy them singly before filling them in pairs:
  • 1 Pauli priciple
  • 2 Afbau principle
  • 3 Hund’s rule
  • 4 None of these
7
Decomposition of benzene diozonium chloride by using Cu2Cl2/HCl to form chlorobenzene is
  • 1 Cannizarro’s reaction
  • 2 Kolbe’s reaction
  • 3 Sandmeyer’s reaction
  • 4 Raschig’s reaction
8
The compound which is not founded during the dry distillation of a mixture of calcium format and calcium acetate is
  • 1 Propanone
  • 2 Ethanal
  • 3 Methanal
  • 4 Propanal
9
Which of the following is a weak acid?
  • 1 HCl
  • 2 HBr
  • 3 HP
  • 4 HI
10
Equal Volumes of gases at the same temperature and pressure should contain equal number of molecules:
  • 1 Gay Lussac's Law
  • 2 Avogadro's Law
  • 3 Law of Joseph Proust
  • 4 Law of John Dalton

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