Chemistry 11 Chapter 5 Atomic Structure Test 6

Chemistry 11 Chapter 5
Atomic Structure
Test 6

1. The exact voltage required in discharge tube depends upon the?

a) Pressure inside the tube
b) Both
c) None of these
d) of tube

2. Tin stone glows _____ when placed in the path of cathode rays?

a) Blue
b) Green
c) Yellow
d) Red

3. The cathode rays drive a small paddle wheel placed in their path. This shows that they have?

a) Momentum
b) K.E energy
c) Voltage
d) P.E energy

4. When the pressure is reduced to about 0.01 torr the original glow?

a) Becomes large
b) Disappears
c) Become small
d) Appears

5. The current does not flow at______ pressure through the gas even at high voltage?

a) Ordinary
b) None of these
c) High
d) Low

6. Alumina glows _____ when placed in the path of cathode rays?

a) Blue
b) Green
c) Red
d) Yellow

7. The cathode rays produce _____ fluorescence on striking the walls of the glass tube?

a) Greenish
b) Blueish
c) Reddish
d) Yellowish

8. The colour of the glow or the fluorescence produced on the walls of the glass tube depends on the?

a) None of these
b) Intensity of light
c) Speed of current
d) Composition of glass

9. Cathode ray cast shadow. Is it true?

a) No
b) Never
c) None of these
d) Yes

10. Cathode rays are _____ charged?a) Neutral
b) Positively
c) None of these
d) Negatively

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