MBC 2 Questions with Answers (100% Correct Answers)

1




MBC 2 Questions with Answers (100%
Correct Answers)
Which of the following statements about the atom 12/6C is false?



A) Its atomic weight is 12.

B) It has 6 protons in its nucleus.

C) It has 6 electrons orbiting the nucleus.

D) Its atomic number is 6.

E) It has 12 neutrons in its nucleus. Answer: E

Using the information in Table 2.1, calculate the molecular weight of ethanol,
C2H5OH.



A) 96

B) 34

C) 46

D) 33

E) The answer cannot be determined. Answer: C

Antacids neutralize acid by the following reaction. Identify the salt in the
following equation:

Mg(OH)2 + 2HCl → MgCl2 + H2O

,2


A) H2O

B) Mg(OH)2

C) HCl

D) MgCl2

E) None of the answers is correct. Answer: D

Which of the following statements is FALSE?



A) Salts readily dissolve in water.

B) Water is a part of a dehydration synthesis reaction.

C) Water freezes from the top down.

D) Water is a polar molecule.

E) Water molecules are formed by hydrolysis. Answer: E

Which of the following is the type of bond holding K+ and I- ions in KI?



A) covalent bond



B) hydrogen bond



C) ionic bond Answer: C

Which of the following is the type of bond between molecules of water in a
beaker of water?

, 3




A) covalent bond



B) hydrogen bond



C) ionic bond Answer: B

What is the type of bond holding hydrogen and oxygen atoms in the H2O
molecule?



A) covalent bond



B) ionic bond



C) hydrogen bond Answer: A

Identify the following reaction: Glucose + Fructose → Sucrose + Water



A) hydrolysis reaction

B) dehydration synthesis reaction

C) ionic reaction

D) exchange reaction

E) reversible reaction Answer: B