Question

QUESTION 5

1. When using the sink/float method to determine the similarities in densities between two objects

   		two immiscible liquids are chosen
   		two liquids with identical densities are chosen
   		the liquids chosen must contain bromine
   		the particles will settle at the same level
   		the particles will show buoyancy depending upon their size

10 points   

QUESTION 6

1. A dispersion curve

   		allows for the determination of the density of a substance
   		shows the relationship between wavelength and refractive index
   		is a means of determining the index of refraction
   		shows the correlation between composition and density
   		demonstrates that glass is an amorphous material

10 points   

QUESTION 7

1. The Becke line

   		can be used to determine the refractive index of glass
   		shows the density difference between opaque samples
   		depends upon temperature changes in a solid sample
   		allows for the determination of density when the volume of the object is not known
   		none of the above are correct

10 points   

QUESTION 8

1. A typical soil samples does not contain

   		inorganic minerals
   		types of clay
   		decayed vegetation
   		decaying animal matter
   		none of the above

10 points   

QUESTION 9

1. Which of the following are not means of characterizing a soil sample

   		sieve analysis
   		PLM
   		refractive index
   		SEM
   		organic solvent extraction

10 points   

QUESTION 10

1. A high speed projectile striking glass without shattering it

   		creates radial cracks on the same side as the impact
   		creates a crater on the side of impact
   		creates projectile fragments in the glass
   		can show crater asymmetry indicating the direction of the projectile
   		all of the above

10 points   

QUESTION 11

1. What types of tests are typically performed to characterize a soil sample? (multiple answer question)?

   		Color
   		particle size
   		inorganic fraction
   		pack density
   		mass spectrometry

Answer 1

Out of all these questions only few questions are related to biology. So there answers are:

8) a soil sample cotain all these things i.e inorganic minerals, clay, decayed vegetation and animal matter.so last option none of the above is the right answer.

9) In this question PLM and organic solvent extraction methods can not be used to characterize soil samples because these terms are not related to the soil. Even i have doubt on SEM also that is scanning electron microscope.

11)Among these options particle size test can be performed to characterize soil samples.