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Quiz 8

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NCAT Practice Test - Practice Test - Chemistry - Liquids Quiz

Attempt 10 MCQs on NCAT Practice Test - Practice Test - Chemistry - Liquids | Quiz 8

71. How does hydrogen bonding affect viscosity?

High viscosity
Low viscosity
High volatility
Low surface tension

72. What is the ΔH_vap of water?

40.7 kJ/mol
27.5 kJ/mol
10 kJ/mol
60 kJ/mol

73. Which of the following involves hydrogen bonding?

Protein secondary structure
Alcohol solubility
DNA structure
All of these

74. Why is water's boiling point much higher than hydrogen sulfide?

Hydrogen bonding
Higher molecular weight
Stronger dipole
Larger size

75. What property allows water striders to walk on water?

High surface tension
High viscosity
High density
Low vapor pressure

76. What is the enthalpy of fusion of ice?

6.01 kJ/mol
40.7 kJ/mol
0.1 kJ/mol
100 kJ/mol

77. Why is methanol miscible with water?

Miscibility with water
High volatility
Low boiling point
Low surface tension

78. What is the crystal structure of ordinary ice?

Hexagonal lattice
Cubic lattice
Amorphous
Tetragonal

79. What is the approximate length of a hydrogen bond in water?

1.8 Å
0.96 Å
2.5 Å
3.0 Å

80. What effect causes oil droplets to coalesce in water?

Hydrophobic effect
Hydrophilic effect
Hydrogen bonding
Van der Waals forces

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