Cabbage juice ph chart ph color 2 red 4 purple 6 violet 8 blue 10 blue-green 12 green the juice from red cabbage is a well known ph indicator solution. red cabbage juice will turn green in which substance? a) milk b) bleach c) vinegar d) stomach acid

Answer : The correct option is, (B) bleach

Explanation :

From the given pH chart, we conclude that the pH of the red cabbage juice is 2 that means it is acidic in nature. The red cabbage juice will turn green by the bleach because bleach is the substance which is basic in nature while the other options, milk, vinegar and stomach acid are acidic in nature.

The chemical formula of the bleach is (NaClO) sodium hypochlorite which is strongly basic in nature.

Hence, the correct option is, (B) bleach

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

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