Entry Test MCQ :: Chemical Bonding

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11.

The molecule having ?-bond

A.	H2O	B.	C2H6
C.	O2	D.	NH3

12.

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

A.	109.5?	B.	104.5?
C.	107.5?	D.	102?

13.

In O2 each oxygen atom is hybridized

A.	sp3	B.	sp2
C.	sp	D.	All

14.

Molecular orbitals are filled according to

A.	Auf bau principle	B.	Hunds rule
C.	Paulis Exclusion principle	D.	All these

15.

Measurement of the degree of polarity is

A.	Electron affinity	B.	Ionic character
C.	Ionization energy	D.	Dipole moment

16.

Which one shows high %age of the ionic character?

A.	H2O	B.	HF
C.	HCI	D.	HBr

17.

A specie with maximum number of unpaired electrons.

A.	F	B.	H2O
C.	HF	D.	NH-2

18.

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

A.	Noble gases	B.	Alkali metals
C.	Coinage metals	D.	Gun metals

19.

Force responsible to hold atoms together in a compound is called

A.	Bond	B.	Attractive force
C.	Interaction	D.	All of above represent same entity

20.

Energy of atom in compound is

A.	Higher than individual	B.	Lesser than individual
C.	No change	D.	Impossible to predict