Course Code
phy307


Question
X-rays have larger wavelengths than which of the following?

Answer
Gamma rays



Question
Which of the following is not a property of metal glass?

Answer
Transparent



Question
The smallest portion of a crystal which when repeated in different directions generates the entire crystal is called:

Answer
Unit cell



Question
Which of the following is a crystalline solid?

Answer
Copper wire



Question
Which of the following is a property of amorphous solids?

Answer
Isotropy



Question
An octahedral void is surrounded by:

Answer
6 atoms



Question
HCP and BCC are called close-packed structures. Close packed structures have:

Answer
Highest packing efficiency



Question
Packing efficiency of a crystal structure is the ratio of:

Answer
Volume occupied by particles to the total volume of the



Question
Co-ordination number of a crystalline solid is:

Answer
Number of nearest neighbours of a particle



Question
Allotropes differ in which of the following properties:

Answer
Crystal Structure


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