CHM 2045C: Spring Term 2008
Practice Final (Spring 1998's Test)
Module Four Part II

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Module Four Part II

Module 4 Part II Test Masters:

Mary Alcott (maliceall@juno.com)

Juliana Allebach (Ruuufie@aol.com)

John Taylor (johtaylo@fscj.edu) [Template Author]

Multiple Choice [One Answer Only]

Question 1

What is the geometry of the left most carbon atom in the molecule below?

a) trigonal planar
b) trigonal bipyramidal
c) tetrahedral
d) octahedral

Question 2

What is the shape of the CS₂ molecule?

a) linear
b) bent
c) tetrahedral
d) trigonal planar

Question 3

What is the shape of the SiH₂Cl₂ molecule?

a) trigonal planar
b) tetrahedral
c) trigonal pyramidal
d) octahedral

Question 4

What is the approximate O-S-O bond angle in SO₂?

a) 90^o
b) 109^o
c) 120^o
d) 180^o

Question 5

Which one of the following sets of molecules would have bond angles of 105^o, 107^o, and 109.5^o respectively?

a) CH₄, H₂O, NH₃
b) H₂O, NH₃,CH₄
c) NH₃,H₂O, CH₄
d) H₂O,CH₄, NH₃
e) none of the above

Question 6

What is the approximate O-C-O bond angle in CO₃^2-

a) 90^o
b) 109^o
c) 120^o
d) 180^o
e) none of the above

Question 7

The bond angles a,b, and c in the molecule shown below would respectively be

a) 109.5^o,109.5^o,109.5^o
b) 120^o,109.5^o,120^o
c) 107^o,109.5^o,120^o
d) 90^o,180^o,90^o

Question 8

Determine the shape and polarity of the BeCl₂ molecule.

a) linear, nonpolar
b) linear, polar
c) bent, nonpolar
d) bent, polar

Question 9

Which of the following molecules is polar?

a) BeCl₂
b) BF₃
c) CBr₄
d) SiH₂Cl₂

Question 10

What is the hybridization of the carbon atom in carbon dioxide?

a) sp
b) sp²
c) sp³
d) sp³d
e) sp³d²

Question 11

The sp² hybrid orbital set contains how many orbitals?

a) 2
b) 3
c) 4
d) 5

Question 12

The respective hybridizations of nitrogen in NF₃ and NH₃ are

a) sp² and sp²
b) sp and sp³
c) sp³ and sp
d) sp³ and sp³
e) none of the above

Question 13

What is the hybridization and H-O-C bond angle for the oxygen atom in acetic acid CH₃COOH?

a) sp, 180^o
b) sp², 109^o
c) sp³, 109^o
d) sp³, 90 ^o
e) none of the above

Question 14

Sideways overlap of two p-orbitals resulting in two regions of electron density in common to the two nuclei are known as

a) a pi bond
b) a sigma bond
c) a delta bond
d) a double bond

Question 15

A typical triple bond consists of

a) three sigma bonds
b) three pi bonds
c) one sigma and two pi bonds
d) two sigma and one pi bond
e) none of the above

Question 16

The Lewis dot structure of carbon monoxide is :C=O:. The respective hybridization of carbon and oxygen are

a) sp and sp³
b) sp² and sp³
c) sp³ and sp²
d) sp and sp
e) sp² and sp²

Question 17

The hybridization of the central carbon in H₂C=C=CH₂ is

a) sp
b) s²p
c) sp²
d) s²p²
e) sp³d

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CHM 2045C: Spring Term 2008 Practice Final (Spring 1998's Test) Module Four Part II