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MCAT Chemistry MCQs Online Quiz Test
Q.1: Which of the following will give phosphoric acid one reaction with water———?
- PCI5
- P2O3
- P2O5
- All of the above
D
Q.2: Phosphorus is a Greek word and it means———?
- Light bearing
- Fire
- Impure
- Tetrahedral
A
Q.3: Allotropic form of phosphorus that is poisonous is———-?
- White
- Red
- Black
- Violet
A
Q.4: Acetic anhydride can be obtained by treating ethyl alcohol with———-?
- P2O5
- H2SO4
- Both A and B
- PCI5
C
Q.5: Phosphorous acid upon thermal decomposition yields phosphoric acid and———-?
- Phosphine
- Phosphorus
- Water
- Phosphorus pentoxide
A
Q.6: P2O5 is a hygroscopic powder which sublimes at——-?
- 260°C
- 360°C
- 630°C
- 620°C
B
Q.7: Phosphoric acid is a weak acid and its basicity is———-?
- 1
- 3
- zero
- 2
B
Q.8: Total energy of a system is———?
- P.E + K.E
- P.E + heat energy
- K.E + heat energy
- P.E + mechanical energy
A
Q.9: Unit of heat in SI system is——–?
- J
- KCaL
- Cal
- GJ
A
Q.10: ——– is study about energy of a chemical system ?
- thermochemistry
- thermodynamics
- chemical kinetics
- stoichiometry
A