PTS Chemistry Mcqs Online Test 1

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PTS Chemistry Mcqs Online Test 1 Preparation Question Answer

Ideal gasses have all the following characteristics except?


Absence of intermolecular forces
Collisions among the molecules of an ideal gas are perfectly elastic
The molecules occupy no space
All of the above are correct

Correct!

Wrong!

Which of these gases diffuse more quickly than oxygen?


H2S
NO
N2O
Cl2

Correct!

Wrong!

The octet rule does not always hold for which of the following elements?


C
O
F
P

Correct!

Wrong!

Which of the following is not considered as an intermolecular force between molecules?


Coordinate covalent bonds
Hydrogen bonds
Debye forces
London dispersion forces

Correct!

Wrong!

The weakest (in strength) of the following intermolecular forces is?


Hydrogen bonding
Vander Waals force
Forces among the polar molecules
Ionic bond

Correct!

Wrong!

What is the relative rate of effusion of CO and CO2?


CO is 1.25 times faster than CO2
CO is 3.75 times faster than CO2
CO is 1.25 times faster than CO
Both diffuse at the same rate

Correct!

Wrong!

The relative attraction of the nucleus for the electrons in a chemical bond is called?


Ionization energy
Electron affinity
Electro negativity
None of the above

Correct!

Wrong!

Which type of bond is formed by overlap of p orbitals?


Pi (?)
Sigma(?)
Both
Neither

Correct!

Wrong!

Which of the following will have highest value of electron affinity?


F
Cl
Br
. I

Correct!

Wrong!

The ionization energy?


Generally increases from left to right in a period
Does not change in a period
Increase from top to bottom in a group
Does not change in a group

Correct!

Wrong!

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