Test number 7- Ace the SAT II Chemistry

1. The correct formula for calcium sulfate is:

(A) CaS
(B) Ca2S
(C) CaSO3
(D) CaSO4
(E) Ca2SO4

Questions 2-5 refer to the following substances


(A) H2O

(B) SO3

(C) NaCl

(D) NaF

(E) NO2

2. Which of the following substance are responsible for the acid rains?

(A) H2O

(B) SO3

(C) NO2

(D) NaF

(E) SO3 and NO2

3. Which of the following substances is a polar solvent?

(A) H2O

(B) SO3

(C) NaCl

(D) NaF

(E) NO2

4. Which of the following substances has the highest melting point?

(A) H2O

(B) SO3

(C) NaCl

(D) NaF

(E) NO2

5. Which of the following substance has a trigonal planar geometry?

(A) H2O

(B) SO3

(C) NaCl

(D) NaF

(E) NO2

6. Which of the following molecules contain only sp3 hybridized carbons?

(A) CH4
(B) CH3CH2CH3
(C) C5H12
(D) CH4 and CH3CH2CH3
(E) All of them

7. Which of the following gases has a higher density than oxygen (measured at the same conditions)?

(A) N2
(B) F2
(C) CH4
(D) H2
(E) H2O(vapors)

8. The correct geometry for NH3 is
(A) trigonal planar
(B) tetrahedral
(C) bent
(D) linear
(E) None of the above.

9. Which of the following statements about carbon monoxide is NOT true?

(A) is less dense than CO2
(B) is a polar substance
(C) is a covalent substance
(D) it contains 2 sigma bonds
(E) all of them are true

10. The values for the atomic radii are increasing correctly in case:

(A) Li>Na>K>Cs
(B) Cs>K>Na>Li
(C) Cs>Na>K>Li
(D) Li>K>Na>Cs
(E) Li = Na = K= Cs