Chemistry MCQs

Page No. 8

What is the density ofargon gas at a temperature of 30°C and a pressure of 1.05 atm?


a1.65 g/L


b1.67 g/L


c1.68 g/L


dNone of the above


View Answer 1.68 g/L

What is the mass percent of silver in silver notrate, AgNO3?


a64.5%


b65.5%


c63.5%


d61.5%


View Answer 63.5%

How many moles are in 22.2 grams of Calcium chloride, CaCl2?


a0.2 moles


b0.3 moles


c0.4 moles


d0.5 moles


View Answer 0.2 moles

The mass of 3.2 moles of ammonia (NH3) gas?


a53.4 grams


b54.4 grams


c55.4 grams


d56.4 grams


View Answer 54.4 grams

Which of the following aqueous solutions would have the highest boiling point?


a0.20 m glucose


b0.20 m NaCl


c0.15 m CaCl2


d0.25 m sucrose


View Answer 0.15 m CaCl2

In a molecule of carbon monoxide, what are the formal charges on the two atoms?


aCarbon= 0, Oxygen= 0


bCarbon= +1, Oxygen= -1


cCarbon= -1, Oxygen= +1


dCarbon= 0, Oxygen= -1



Which of the following solvents would best facilitate an SN2 substitution reaction?


aWater


bHexane


cDimethylflormamide


dEthanol


View Answer Dimethylflormamide

When an aldehyde is reacted with hydrogen cyanide a ” Cyanihydrin” is formed. This process is best termed as __________?


aElectrophilic addition


bElectrophilic substitution


cNucleophilic addition


dNucleophilic substitution


View Answer Nucleophilic addition

The relatively high energy of the gauche conformation of butane is primarily associated with_________?


aAngle strain


bTortional strain


cSteric strain


dOrbital strain


View Answer Steric strain

The molecular formula for cholesterol is C27 H46 O. What are the degrees of unsaturation for this compound?


a5


b6


c7


d8


View Answer 5

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