5 Chemistry Mcq questions - 22293

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5 Chemistry Mcq questions

 

 Question 1

Question 1

1.      

Question 1 text

 

 

What is the new mass/volume (m/v)% of a KOH solution that is prepared by diluting 110 mL of a 6% (m/v) KOH solution to 330 mL?

Answer

     

 

6%

 

2%

 

1%

 

18%

     

 Question 2

Question 2

1.      

Question 2 text

 

 

Water is a polar solvent and hexane (C6H14) is a nonpolar solvent. Which of the following correctly describes the solubility of the solute?

Answer

     

Question 2 answers

 

mineral oil, soluble in water

 

CaCl2, soluble in hexane

 

octane, soluble in water

 

CCl4 , soluble in water

 

NaHCO3, soluble in water

     

 Question 3

Question 3

1.      

Question 3 text

 

 

Which of the following molecules can form hydrogen bonds?

Answer

     

Question 3 answers

 

CH4

 

NaH

 

BH3

 

HI

 

NH3

     

 Question 4

Question 4

1.      

Question 4 text

 

 

What volume of a 2.00 M KCl solution is required to prepare 500. mL of a 0.100 M KCl solution?

Answer

     

Question 4 answers

 

2.00 mL

 

5.00 x 102 mL

 

1.00 x 104 mL

 

0.0400 mL

 

25.0 mL

     

 Question 5

Question 5

1.      

Question 5 text

 

 

Which solution is isotonic to a red blood cell?

Answer

     

Question 5 answers

 

10% glucose

 

water

 

0.5% NaCl

 

2% glucose

 

0.9% NaCl

     

 

 

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