Question 1

The oxidation state of oxygen in OF2 is ________.

Accepted Answer

A) +1 
B) +2 
C) 0 
D) -1 
E) -2

Question 2

In metallic hydrides,the oxidation number of hydrogen is considered to be ________.

Accepted Answer

A) -2 
B) -1 
C) 0 
D) +1 
E) +2

Question 3

The oxidation state of oxygen in O2F2 is ________.

Accepted Answer

A) +1 
B) -1 
C) +2 
D) 0 
E) -2

Question 4

Chlorine can have a positive oxidation state ________.

Accepted Answer

A) if it combines with bromine or iodine 
B) if it combines with oxygen or fluorine 
C) if it combines with hydrogen 
D) if it combines with an alkali metal 
E) in its elemental form

Question 5

What are the five crystalline allotropes of carbon?

Accepted Answer

The answer of What are the five crystalline allotropes of...

Question 6

What is the F-Xe-F bond angle in XeF2?

Accepted Answer

A) 180° 
B) 90° 
C) 109.5° 
D) 120° 
E) 60°

Question 7

Hybridization of Xe in XeF4 is ________ and in XeF2 is ________.

Accepted Answer

A) sp3d2, sp3d2 
B) sp3d, sp3d2 
C) sp3d2, sp3d 
D) sp3, sp3d 
E) sp3, sp3d2

Question 8

Which of the following equations correctly represents the combustion of hydrazine?

Accepted Answer

A) N2H4 (l)+ O2 (g)→ NH3 (g)+ HNO2 (g) 
B) N2H4 (l)+ 2O2 (g)→ 2NO2 (g)+ 2H2 (g) 
C) N2H4 (l)+ O2 (g)→ 2  NO (g) 
D) N2H4 (l)+ O2 (g)→ N2 (g)+ 2 H2O (g) 
E) N2H4 (l)+ O2 (g)→ N2 (g)+ 2H2 (g)+ O2 (g)

Question 9

Low levels of arsenic consumption can lead to ________ or bladder cancer.

Accepted Answer

The answer of Low levels of arsenic consumption can lead...

Question 10

Which of the following is the nitride ion?

Accepted Answer

A) N3- 
B) N3- 
C) NO3- 
D) N- 
E) NO2-

Question 11

Amphoteric oxides are also known as ________.

Accepted Answer

A) basic oxides 
B) basic anhydrides 
C) acidic oxides 
D) acidic anhydrides 
E) none of the above

Question 12

H₂ is reacted with ________ to produce methanol.

Accepted Answer

The answer of H₂ is reacted with ________ to produce...

Question 13

All oxides are ionic compounds.

Accepted Answer

A) True 
 B)False

Question 14

Silicones can be oils or rubber-like materials depending on ________.

Accepted Answer

A) the silicon-to-oxygen ratio 
B) the length of the chain and degree of cross-linking 
C) the percentage of carbon in the chain 
D) the percentage of sulfur in the chain 
E) the oxidation state of silicon in the chain

Question 15

Which element in group 6A is not capable of having an expanded valence shell?

Accepted Answer

A) sulfur 
B) tellurium 
C) selenium 
D) oxygen 
E) polonium

Question 16

The oxidation state of phosphorous in the PF5 molecule is ________.

Accepted Answer

A) +5 
B) +4 
C) -5 
D) +6 
E) 0

Question 17

Why does calcium carbonate dissolve in water containing carbon dioxide?

Accepted Answer

The answer of Why does calcium carbonate dissolve in water...

Question 18

Which pair of formula/name is incorrect?

Accepted Answer

A) NO2 / dinitrogen oxide 
B) N2O / nitrous oxide 
C) NO / nitric oxide 
D) N2O4 / dinitrogen tetroxide 
E) N2O5 / dinitrogen pentoxide

Question 19

The correct name of H2CO3 is ________.

Accepted Answer

A) hydrogen carbide 
B) hydrogen carbonate ion 
C) carbonate ion 
D) carbonic acid 
E) carboxylic acid

Question 20

Which of the following statements is false?

Accepted Answer

A) Ozone is a better reducing agent than O2 (g). 
B) Ozone is produced by passing electricity through dry O2 (g). 
C) Ozone oxidizes all of the common metals except gold and platinum. 
D) Ozone decomposes to O2 and O. 
E) Ozone is an allotrope of oxygen.

Exam 22: Chemistry of the Nonmetals

The oxidation state of oxygen in OF₂ is ________.

In metallic hydrides,the oxidation number of hydrogen is considered to be ________.

The oxidation state of oxygen in O₂F₂ is ________.

Chlorine can have a positive oxidation state ________.

What are the five crystalline allotropes of carbon?

What is the F-Xe-F bond angle in XeF₂?

Hybridization of Xe in XeF₄ is and in XeF₂ is .

Which of the following equations correctly represents the combustion of hydrazine?

Low levels of arsenic consumption can lead to ________ or bladder cancer.

Which of the following is the nitride ion?

Amphoteric oxides are also known as ________.

H₂ is reacted with ________ to produce methanol.

All oxides are ionic compounds.

Silicones can be oils or rubber-like materials depending on ________.

Which element in group 6A is not capable of having an expanded valence shell?

The oxidation state of phosphorous in the PF₅ molecule is ________.

Why does calcium carbonate dissolve in water containing carbon dioxide?

Which pair of formula/name is incorrect?

The correct name of H₂CO₃ is ________.

Which of the following statements is false?

Exam 22: Chemistry of the Nonmetals

The oxidation state of oxygen in OF2 is ________.

In metallic hydrides,the oxidation number of hydrogen is considered to be ________.

The oxidation state of oxygen in O2F2 is ________.

Chlorine can have a positive oxidation state ________.

What are the five crystalline allotropes of carbon?

What is the F-Xe-F bond angle in XeF2?

Hybridization of Xe in XeF4 is ________ and in XeF2 is ________.

Which of the following equations correctly represents the combustion of hydrazine?

Low levels of arsenic consumption can lead to ________ or bladder cancer.

Which of the following is the nitride ion?

Amphoteric oxides are also known as ________.

H2 is reacted with ________ to produce methanol.

All oxides are ionic compounds.

Silicones can be oils or rubber-like materials depending on ________.

Which element in group 6A is not capable of having an expanded valence shell?

The oxidation state of phosphorous in the PF5 molecule is ________.

Why does calcium carbonate dissolve in water containing carbon dioxide?

Which pair of formula/name is incorrect?

The correct name of H2CO3 is ________.

Which of the following statements is false?

The oxidation state of oxygen in OF₂ is ________.

The oxidation state of oxygen in O₂F₂ is ________.

What is the F-Xe-F bond angle in XeF₂?

Hybridization of Xe in XeF₄ is and in XeF₂ is .

H₂ is reacted with ________ to produce methanol.

The oxidation state of phosphorous in the PF₅ molecule is ________.

The correct name of H₂CO₃ is ________.