Question 1

A given mass of gas exerts a pressure of 24 cm of mercury at −20° C. What pressure the gas would exert

at 10° C for an isochoric process?

Options :

A : 25.11 cm

B : 24.44 cm

C : 34.45 cm

D :

12.23 cm

E :

26.88 cm

Answer: A

Question 2

What are the prime factors of 18?

Options :

A : 1, 2, 3, 6, 9, and 18

B :

1, 2, 3, 6, and 9

C :

2, 3, 6, and 9

D : 2 and 3

Answer: D

Question 3

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 4

A child swings a yo-yo around his head in a circle. The direction of centripetal acceleration is

Options :

A : in the direction of motion along the circle

B : in the opposite direction of motion along the circle

C : located at points tangent to the yo-yo’s position

D : directed along a line towards the center of the circle

E : there is only linear acceleration

Answer: D

Question 5

The following diagram shows a food web within a temperate deciduous forest of the Northeastern United States.

CLEP-Science-and-Mathematics-page205-image35

Bacteria and fungi are considered decomposers because they

Options :

A : are autotrophic

B : are heterotrophic

C : are at the bottom of the food web

D : cat the remains of dead organisms

E : are mainly microscopic

Answer: D