Question 1

Composite materials combine two or more substances,yet they retain their individual characteristics.

Accepted Answer

A) True 
 B)False

Question 2

How does water interact with clay and limestone in the making of cement?

Accepted Answer

A)  It must be completely water free. 
B)  It produces hydrates and hydroxides. 
C)  It degrades the limestone. 
D)  It forms slaked lime. 
E)  It washes away the silicates. F) A) and E)
G) A) and D)

Question 3

What do the current high temperature superconductors have in common?

Accepted Answer

A)  They are all metals. 
B)  They are all non-metals. 
C)  They are all undoped materials. 
D)  They are ceramic oxides. 
E)  Nothing.There is nothing in common. F) All of the above
G) A) and D)

Question 4

In nano-materials,such as quantum dots,the broad band of energy may give rise to transitions in the visible region of the spectrum.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is a naturally occurring form of calcium carbonate?

Accepted Answer

A)  Quartz.
B)  Limestone.
C)  Silica.
D)  Cristobalite.
E)  Silicate.F) C) and D)
G) A) and D)

Question 6

What is the minimum pressure and temperature for diamond formation?

Accepted Answer

A)  8kbar,150 ∘\circ∘ C
B)  800kbar,15,000 ∘\circ∘ C
C)  80 kbar,15,000 ∘\circ∘ C
D)  800kbar,1,500 ∘\circ∘ C
E)  80kbar,1,500 ∘\circ∘ C F) None of the above
G) All of the above

Question 7

delocalized pi-bonds are the reason carbon nano-tubes conduct electricity.

Accepted Answer

A) True 
 B)False

Question 8

Glass has numerous,microscopic and macroscopic crystalline regions.

Accepted Answer

A) True 
 B)False

Question 9

What form do single walled nano-tubes take?

Accepted Answer

A)  "Armchair."
B)  Chiral.
C)  Zig-zag.
D)  All of the above.
E)  None of the above.F) A) and E)
G) C) and D)

Question 10

How do luminescent materials release light?

Accepted Answer

A)  By returning from an excited state to a lower,but still excited state.
B)  By the absorption of any wavelength radiation.
C)  By the absorption of light photons.
D)  By returning from an excited state to a lower energy state.
E)  Through an applied electric voltage.F) A) and C)
G) B) and D)

Question 11

How does conduction in a semi-conductor compare to that in a metal?

Accepted Answer

A)  It is better.
B)  It is worse.
C)  It is very nearly the same.
D)  It is higher at low temperatures,and lower at high temperatures.E) A) and B)
F) A) and C)

Question 12

Which is a feature of solid electrolytes?

Accepted Answer

A)  Electrons move through their lattices. 
B)  Ions move through their lattices. 
C)  Atoms move through them. 
D)  Atoms lose electrons within them. 
E)  Atoms gain electrons within them. F) B) and D)
G) A) and B)

Question 13

To what is the boron nitride structure related?

Accepted Answer

A)  Cement.
B)  Silicon.
C)  Carbon.
D)  Metal alloys.
E)  Elemental metals.F) A) and E)
G) All of the above

Question 14

What makes emery different from corundum?

Accepted Answer

A)  Impure micro-crystals make up corundum.
B)  Impure micro-crystals make up emery.
C)  Corundum is almost pure silicate.
D)  Emery is almost pure silicate.
E)  Nothing; they are actually the same material.F) B) and C)
G) C) and D)

Question 15

For a substance to be considered a nano-material what criterion must be met?

Accepted Answer

A)  It must have non-separable energy levels.
B)  It must be in finely divided powder form.
C)  It must contain a metal suspension.
D)  It must have a particle size in the range 1 - 100 nm.
E)  It must be both lightweight and remarkably strong as a macroscopic material.F) B) and C)
G) A) and B)

Question 16

What is the major component of pewter?

Accepted Answer

A)  Antimony
B)  Zinc
C)  Tin
D)  Copper
E)  IronF) A) and E)
G) B) and E)

Question 17

Which mineral is a common form of crystalline calcium carbonate?.

Accepted Answer

A)  Carbonite.
B)  Calcite.
C)  Aragonite.
D)  B and C,above.
E)  A and C,above.F) A) and B)
G) A) and C)

Question 18

How can quantum dots be made?

Accepted Answer

A)  In solution.
B)  By depositing atoms on a surface.
C)  At high temperature.
D)  Both A and B.
E)  Both A and C.F) B) and C)
G) A) and E)

Question 19

Why is gravel often used as a filler in concrete?

Accepted Answer

A)  Because it is hard.
B)  Because it is inexpensive.
C)  It is easily deformable.
D)  Because it is a granite.
E)  Gravel is not a filler in concrete.F) A) and B)
G) C) and D)

Question 20

What makes phosphors glow?

Accepted Answer

A)  Electron impacts.
B)  Plasma discharges.
C)  Irradiation with UV
D)  Both A and C,above.
E)  None of the above.F) A) and E)
G) B) and D)

Exam 7: Inorganic Materials

What form do single walled nano-tubes take?

Correct AnswerverifiedShow Answer

In nano-materials,such as quantum dots,the broad band of energy may give rise to transitions in the visible region of the spectrum.

Correct AnswerverifiedShow Answer

Glass has numerous,microscopic and macroscopic crystalline regions.

Correct AnswerverifiedShow Answer

What is the major component of pewter?

Correct AnswerverifiedShow Answer

How does conduction in a semi-conductor compare to that in a metal?

Correct AnswerverifiedShow Answer

What do the current high temperature superconductors have in common?

Correct AnswerverifiedShow Answer

Which is a feature of solid electrolytes?

Correct AnswerverifiedShow Answer

Composite materials combine two or more substances,yet they retain their individual characteristics.

Correct AnswerverifiedShow Answer

Why is gravel often used as a filler in concrete?

Correct AnswerverifiedShow Answer

How does water interact with clay and limestone in the making of cement?

Correct AnswerverifiedShow Answer

Which mineral is a common form of crystalline calcium carbonate?.

Correct AnswerverifiedShow Answer

For a substance to be considered a nano-material what criterion must be met?

Correct AnswerverifiedShow Answer

How do luminescent materials release light?

Correct AnswerverifiedShow Answer

To what is the boron nitride structure related?

Correct AnswerverifiedShow Answer

What makes phosphors glow?

Correct AnswerverifiedShow Answer

What is the minimum pressure and temperature for diamond formation?

Correct AnswerverifiedShow Answer

What makes emery different from corundum?

Correct AnswerverifiedShow Answer

How can quantum dots be made?

Correct AnswerverifiedShow Answer

delocalized pi-bonds are the reason carbon nano-tubes conduct electricity.

Correct AnswerverifiedShow Answer

Which of the following is a naturally occurring form of calcium carbonate?

Correct AnswerverifiedShow Answer

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