Phase Changes Energies Quiz Questions and Answers PDF - 69

MCQ 341: When we measure molar heat of vaporization pressure taken is

1. 5 atmosphere
2. 3 atm
3. 1 atm
4. 9 atm

MCQ 342: The turbid phase of cholesteryl benzoate is called

1. liquid crystal
2. solid crystal
3. milky liquid
4. cloudy liquid

MCQ 343: If 10 percent urea is present in NaCl it will become

1. needle like
2. cubic
3. oval
4. round

MCQ 344: Energy is changed when matter undergoes

1. chemical change
2. physical change
3. pressure change
4. volume change

MCQ 345: The modern method for separation of isotopes is

1. laser separation
2. chromatography
3. ionization
4. X-ray