Chemistry Mcqs Archives - Page 18 of 125 -

A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula?

A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula?

A. C2H6O
B. C6H18O3
C. C6H12O6
D. C2H5O

A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula? Read More »

Chemistry Mcqs

A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound?

Chemistry Mcqs / admin

A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound?

A. C2H4
B. C3H6
C. C4H8
D. C5H10

A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound? Read More »

Chemistry Mcqs

The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________?

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The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________?

A. 1.8 gram of H2O
B. 12 moles of KMnO4
C. 0.6N H2SO4
D. 4.6 gram of C2H5OH

The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________? Read More »

Chemistry Mcqs

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

Chemistry Mcqs / admin

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

A. 5
B. 6
C. 7
D. 8

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

Chemistry Mcqs

The most appropriate method for separating a large quantity of a mixture of nonvolatile, nonpolar organic compounds would be__________?

Chemistry Mcqs / admin

The most appropriate method for separating a large quantity of a mixture of nonvolatile, nonpolar organic compounds would be__________?

A. Distillation
B. Extraction
C. Gas chromatography
D. Column chromatography

The most appropriate method for separating a large quantity of a mixture of nonvolatile, nonpolar organic compounds would be__________? Read More »

Chemistry Mcqs

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

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

A. Angle strain
B. Torsional strain
C. Steric strain
D. Orbital strain

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

Chemistry Mcqs

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

Chemistry Mcqs / admin

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

A. Electrophilic addition
B. Electrophilic substitution
C. Nucleophilic addition
D. Necleophilic substitution

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

Chemistry Mcqs

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

Chemistry Mcqs / admin

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

A. Water
B. Hexane
C. Dimethylflormamide
D. Ethanol

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

Chemistry Mcqs

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

Chemistry Mcqs / admin

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

A. Carbon=0, Oxygen=0
B. Carbon= +1, Oxygen= -1
C. Carbon= -1, Oxygen= +1
D. Carbon=0, Oxygen= -1

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

Chemistry Mcqs

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

Chemistry Mcqs / admin

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

A. 0.20 m glucose
B. 0.20 m NaCl
C. 0.15 m CaCl2
D. 0.25 m sucrose

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

Chemistry Mcqs