PTS Chemistry Mcqs Online Test 10

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PTS Chemistry Mcqs Online Test 10 Preparation Question Answer

Energy of atom in compound is?

. Higher than individual
Lesser than individual
No change
Impossible to predict

Correct!

Wrong!

A specie with maximum number of unpaired electrons?
 

F
H2O
HF
NH-2

Correct!

Wrong!

Force responsible to hold atoms together in a compound is called?

Bond
Attractive force
Interaction
All of above represent same entity

Correct!

Wrong!

Molecular orbitals are filled according to?

Auf bau principle
Hunds rule
Paulis Exclusion principle
All these

Correct!

Wrong!

When 2 lone pair and 2 bond pair are around the central atom reduction in the bond angle is up to?

109.5?
104.5?
107.5?
102?

Correct!

Wrong!

In O2 each oxygen atom is hybridized?

sp3
sp2
sp
All

Correct!

Wrong!

Which of the following have their outer most shell complete in atomic form?

Noble gases
Alkali metals
. Coinage metals
Gun metals

Correct!

Wrong!

Which one shows high %age of the ionic character?
 

H2O
HF .
HCI
HBr

Correct!

Wrong!

The molecule having ?-bond?

H2O
C2H6
O2
NH3

Correct!

Wrong!

Measurement of the degree of polarity is?

Electron affinity
Ionic character
Ionization energy
Dipole moment

Correct!

Wrong!

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