Question

Column A	Column B
1. A device for lifting ground water	(a) Mercury Barometer
2. a device used to find atmospheric pressure and uses mercury	(b) Foot valve
3. A device used to find atmospheric pressure which does not use mercury	(c) Common Water Pump
4. a valve in the common water pump which does not allow the water to flow back	(d) Aneroid Barometer

• A. 1. (c), 2. (a), 3. (d), 4. (b)
• B. 1. (c), 2. (d), 3. (a), 4. (b)
• C. 1. (b), 2. (c), 3. (d), 4. (a)
• D. 1. (b), 2. (a), 3. (d), 4. (c)
• E. None of these

Answer 1

Answer: (A)

1. (c), 2. (a), 3. (d), 4. (b)

1: A water pump is used to pump ground water up to the surface. => (c) Common Water Pump
2: A mercury Barometer is a pressure measuring device that uses mercury. => (a) Mercury Barometer
3: Aneroid barometers are pressure measuring devices that do not use mercury. => (d) Aneroid Barometer
4: A foot valve is a one-way valve that is used in water pumps to prevent water from flowing back. => (b) Foot Valve