Question

2. Liquid pressure is measured by a device called
a) thermometer
b) barometer
c) manometer
d) hydrometer
3. If in a barometer we use any other liquid except mercury, the height of liquid column to balance atmospheric pressure would
a) depend on density of liquid used
b) be lesser than 76 cm
c) be equal to 76 cm
d) none of the above
4. If we lightly squeeze a balloon in the middle, what will happen to air pressure inside the balloon?
a) It increases in middle only
b) It decreases in middle only
c) It increases throughout
d) It decreases throughout
5. Which of the following would make a floating object likely to sink?
a) A block of iron is formed into hollow shape
b) A submarine fills its ballast tanks with air
c) A submarine fills its ballast tanks with water
d) A fish inflates its swim bladder with gas or air
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Answer 1

Answer:

1. c) manometer

2. a) depend on density of liquid used

3. c) it increases throughout

4. c) A submarine fills its ballast tanks with water

Explanation:

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