Bissoy.com
Doctors Medicines MCQs Q&A

When carbon dioxide is passed through clear lime water solution, it turns milky, The milky appearance of lime water is due to

When carbon dioxide is passed through clear lime water solution, it turns milky, The milky appearance of lime water is due to Correct Answer presence of insoluble calcium carbonate

The correct answer is option i.e., presence of insoluble Calcium Carbonate

  • Calcium hydroxide is sparingly soluble in water producing an alkaline solution known as limewater.
  • Calcium Carbonate is a chemical compound found commonly in rocks as the minerals and is the main component of pearls and the shells of marine organisms, eggs, etc.
  • When carbon dioxide gas is passed through or over limewater, it turns milky due to the formation of calcium carbonate.
  • In the chemical reaction it can be shown as :

Ca (OH)2 (aq) + CO2 (g)   -------------> CaCO3 (g)

Lime water     Carbon Dioxide            Calcium Carbonate

Additional Information

  • Some of the important uses of lime water include:
    • Helps improve diet.
    • May aid digestion.
    • Reduces the chances of cancer.
    • Improves skin quality
    • Improves the immune system.

Related Questions

In the carbonation of a soft drink, the total quantity of carbon dioxide required is the equivalent of 3 volumes of gas to one volume of water at 0⁰C and atmospheric pressure. Calculate (i) the mass fraction and (ii) the mole fraction of the CO2 in the drink, ignoring all components other than CO2 and water. Basis 1 m3 of water = 1000 kg Volume of carbon dioxide added = 3 m3 From the gas equation, pV = nRT 1 x 3 = n x 0.08206 x 273 n = 0.134 mole. Molecular weight of carbon dioxide = 44 And so weight of carbon dioxide added = 0.134 x 44 = 5.9 kg
Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative Assertion (A) : Carbon dioxide turns lime water milky. Reason (R) : Carbon dioxide sullies the water.
In the following question, the 1st and the last part of the sentence/ passage are numbered 1 and 6. The rest of the sentence/passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. Global warming is the rise in average surface temperature of the earth globally. P. It is caused by the greenhouse effect of increased level of greenhouse gases. Q. Deforestation also increases carbon dioxide emissions. R. Greenhouse gases include carbon dioxide, CFCs, etc. S. The increasing use of fossil fuels is a major cause of carbon dioxide emission. 6. Carbon dioxide traps heat and causes the greenhouse effect.
Lime water turns milky when carbon dioxide is passed through it. It is due to the formation of
Solution-1 containing 40% nitric acid and 20% carbon dioxide at the rate F combines with Solution-2 containing 30% nitric acid and 40% carbon dioxide at the rate D, the product formed contains 30% nitric acid and 20% carbon dioxide at the rate P, If P = xF what is x?
Solution-1 containing 40% acetic acid and 20% carbon dioxide at the rate F combines with Solution-2 containing 20% acetic acid and 40% carbon dioxide at the rate D, the product formed contains 30% acetic acid at the rate P, what is the percentage of carbon dioxide in product?
 When carbon dioxide is passed through limewater, the lime water turns milky. This is a 
When carbon dioxide gas is passed through lime water, a white precipitate is formed, which dissolves on passing excess of carbon dioxide. The white precipitate dissolves due to the formation of which compound? 
Garima starts walking towards the south from point R. He walks for 5m to reach Point S then turns right and walks for 2m to reach point T from there he turns left and walks for 3m to reach Point Z. He then turns right from point Z and walks for 6m to reach point Y and then turns right and walks for 3m to reach point X. He then turns right from point X and walks for 4m to reach point W and then turns left and walks for 5m to reach point V and then turns left and walks for 4m till point U and stops. What is the shortest distance between point V and point R?
Two boysM and N start from the same point. M walks 5 km south, then turns to his left and walks 6 km, then turns to his right and walks 5 km, and then again turns to his right and walks 6 km. At the same time, N walks 5 km north, then turns to his left and walks 6 km, then turns to his left and walks 10 km, and then again turns to his left and walks 3 km and then turns to his right and walks 5 km.What is the position of N with respect to M?