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Basic Chemistry
1.
Which of the following statements is TRUE?
- A.Solids change into liquid on heating to its melting point.
- B.Liquids change into gas, on cooling to its freezing point.
- C.Liquids change into solid on heating to its boiling point.
- D.Solids change into gas on heating to its melting point.
- Answer
- Report
Answer : [A]
2.
The physical state of matter is due to presence of different intermolecular forces such as _______.
- A.dipole-dipole interactions
- B.London forces
- C.hydrogen bonding
- D.all of these
- Answer
- Report
Answer : [D]
3.
Which of the following conditions favours the existence of a substance in the solid state?
- A.High temperature
- B.Low temperature
- C.High thermal energy
- D.Weak cohesive forces
- Answer
- Report
Answer : [B]
4.
A crystalline solid has _______.
- A.long range order
- B.short range order
- C.disordered arrangement
- D.none of these
- Answer
- Report
Answer : [A]
5.
The sharp melting point of crystalline solids is due to _______.
- A.a regular arrangement of constituent particles observed over a short distance in the crystal lattice
- B.a regular arrangement of constituent particles observed over a long distance in the crystal lattice
- C.same arrangement of constituent particles in different directions
- D.different arrangement of constituent particles in different directions
- Answer
- Report
Answer : [B]
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