Higher Test Marks with Free Online CLEP-Science-and-Mathematics Exam Practice

Assess the CertsIQ’s updated CLEP-Science-and-Mathematics exam questions for free online practice of your Biology, Calculus, Chemistry, College Algebra & Mathematics, Precalculus, Natural Sciences test. Our CLEP Science and Mathematics dumps questions will enhance your chances of passing the CLEP certification exam with higher marks.

Question 1

In an aquatic environment, oxygen concentration depends on chemical and physical factors and is greatly

affected by many biological processes. These is much less dissolved oxygen (DO) in aquatic environments

than in dry air. In most aquatic environments, there are only 5 to 10 mL of dissolved oxygen in a liter of

water. Chemical and physical factors, such as salinity, pH, and especially temperature, can affect the DO

concentration and distribution. An experiment was done to study the effect of different salinity levels on DO

in water of varying temperatures. The results are below. Salinity is expressed in parts per thousand (ppt)

and is the content of dissolved salt in water.

CLEP-Science-and-Mathematics-page205-image13

The results of the experiment suggest that at salinities of greater than 30 ppt, it is likely that

Options :

A : dissolved oxygen levels would increase

B : water temperature would increase

C :

aquatic organisms would begin to die

D : there would be no change in dissolved oxygen

E :

the amount of dissolved oxygen would decrease

Answer: A

Question 2

This reaction produces an acidic solution.

Options :

A : HI(aq) + NaOH(aq)

B : H2O(l) + HOCl(aq)

C : K(s) + H2O (aq)

D : Xe(g) + H2O(g)

E : Zn(s) + CuSO4(aq)

Answer: B

Question 3

The volume in liters of a 0.2M solution of NaOH needed to neutralize 2 liters of a 0.03M solution of HCl is

Options :

A : 0.3 L

B : 0.03 L

C : 0.1 L

D : 0.01 L

E : 0.2 L

Answer: A

Question 4

Which of the following phenomena is NOT caused by the movement of the plates on the earth’s upper
mantle?

Options :

A : Earthquakes

B : Volcanic activity

C : Production of new crust along with destruction of old crust

D : Erosion

E : Formation of mountains

Answer: D

Question 5

Which of the following terms describes as a frozen mass of gas and dust with a definite orbit through the

solar system?

Options :

A : A moon

B : A comet

C : An asteroid

D : A meteorite

E : A nebula

Answer: B