物理一般氣體定律 DSE、CE 選擇題（第 2 頁）

11.

The temperature of two gases are $0^\circ$ C and $100^\circ$ C respectively. Express the temperature difference of the two gases in absolute temperature scale.

12.

The volume of a fixed mass of gas is $V$ . If the pressure of the gas is doubled and its absolute temperature is reduced to half of the initial value, the volume of the gas becomes

13.

Syringe with piston containing gas connected by rubber tubing to a Bourdon gauge

The above apparatus is used to study the relationship between the pressure and volume of a fixed mass of gas at constant temperature. Which of the following can improve the accuracy of the experiment ?

(1)Pressing the piston quickly.

(2)Using a large syringe.

(3)Using a short length of rubber tubing.

14.

The graph shows the result obtained when an experiment is performed to study Boyle's Law. What do the axes of the graph represent ?

Graph of y against x with experimental points (crosses) lying on a straight line rising from the origin

	$y$ axis	$x$ axis
	Volume	Temperature
	Volume	1 / Temperature
	Pressure	Volume
	Pressure	1 / Volume

15.

Which of the following graphs correctly shows the relation between the pressure $P$ and the absolute temperature $T$ of a fixed mass of gas at constant volume ?

Four graphs of P against T: A falling line, B hyperbola-like curve, C rising straight line through the origin with dashed extension, D rising line crossing the P axis

16.

The pressure of a fixed mass of gas at $30^\circ$ C is $3\times10^5$ Pa. What would be its pressure if the volume of the gas is doubled and its temperature is increased to $60^\circ$ C ?

17.

The absolute temperature of a fixed mass of gas is $T$ . If the pressure and volume of the gas are both doubled, its absolute temperature becomes

18.

Capillary tube with mercury thread trapping a gas column, with thermometer, in a beaker of water heated from below

The apparatus shown in the figure is used to study the relation between the volume and temperature of a fixed mass of gas at constant pressure. Which of the following statements is/are correct ?

(1)Immersing the whole gas column in water.

(2)Sealing the capillary tube at both ends.

(3)Preventing the thermometer from touching the bottom of the beaker.

19.

Gas column in a cylinder compressed by a piston

A column of gas is compressed slowly as shown in the figure above. Which of the following graphs correctly shows the relation between the gas pressure $P$ and the length of the gas column $h$ ?

Four graphs: A P against h straight line; B P against h line with negative intercept; C P against 1/h curve; D P against 1/h straight line through the origin

20.

Which of the following graphs correctly shows the variation of volume $V$ with absolute temperature $T$ of a fixed mass of gas at constant pressure ?

Four graphs of V against T: A straight line falling, B straight line rising from the origin with dashed extension, C rising line with dashed extension to negative T, D rising line crossing the V axis