water - cycle 2

Based on the table, which substance has a melting point of 250^oC and a boiling point of 750^oC?

• Substance A

• Substance B

• Substance C

• Substance D

Based on the table, substance A, B, C and D are in their solid state at the temperature shown.

Which substance is not possible to have a melting point of 300^oC?

• Substance A, B and C only

• Substance C only

• Substance D only

• none

Based on the table, substance A, B, C and D are in their liquid state at the temperature shown.

Which substance is possible to have a melting point of 180^oC?

• Substance A and B only

• Substance C only

• Substance C and D only

• Substance D only

Based on the table, substance A, B, C and D are in their gaseous state at the temperature shown.

Which substance is possible to have a melting point of 100^oC?

• Substance A only

• Substance B only

• Substance B, C and D only

• Substance B and C only

Which of the four substance is a liquid at 300^oC and a gas at 800^oC?

• Substance A

• Substance B

• Substance C

• Substance D

Which of the four substance is a solid at 140^oC and a gas at 800^oC?

• Substance A

• Substance B

• Substance C

• Substance D

Which substance has melting point at 30^oC and boiling point at 150^oC?

• Substance A

• Substance B

• Substance C

• Substance D

Which substance has freezing point at 300^oC and boiling point at 700^oC?

• Substance A

• Substance B

• Substance C

• Substance D

A piece of ice was heated in a beaker for 8 minutes.

The water in the beaker started boiling at the 6th minute.

Which of the following is the possible temperature-time graph?

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A beaker of tap water was heated for 6 minutes.

The water in the beaker started boiling at the 4th minute.

Which of the following is the possible temperature-time graph?

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