If 2 g of aluminium is treated, first with excess of dilute H₂SO₄ and then
If 2 g of aluminium is treated, first with excess of dilute H₂SO₄ and then with excess of NaOH, the…
8 years ago
Questions
Chemical A is used for water softening to remove temporary hardness.
Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda.When…
8 years ago
If a given sample of water contains 0.06 g of Ca²⁺ ion per kg, calculate
If a given sample of water contains 0.06 g of Ca²⁺ ion per kg, calculate the ppm level of Ca²⁺…
8 years ago
Calculate the amount of [Ca(OH)₂] required to remove the hardness of water
Calculate the amount of [Ca(OH)₂] required to remove the hardness of water from 60,000 litres containing 16.2 g of Ca(HCO₃)₂…
8 years ago
5 g of hydrogen peroxide is present in 56 mL of solution. The solution
5 g of hydrogen peroxide is present in 56 mL of solution. The solution will correspond to Options (a) 10…
8 years ago
Hardness of water due to presence of salts of
Hardness of water due to presence of salts of Options (a) Na⁺ and K⁺ (b) Ca²⁺ and Mg²⁺ (c) Ca²⁺…
8 years ago
Position of hydrogen in periodic table is such that it can be placed in
Position of hydrogen in periodic table is such that it can be placed in Options (a) both 1st and 17th…
8 years ago
In which of the following reaction, the hydrogen peroxide is a reducing agent?
In which of the following reaction, the hydrogen peroxide is a reducing agent? Options (a) 2HI + H₂O₂ → 2H₂O…
8 years ago
In the reaction of H₂O₂ with acidified KMnO₄
In the reaction of H₂O₂ with acidified KMnO₄ Options (a) H₂O₂ acts as a oxidising agent (b) H₂O₂ acts as…
8 years ago
In the softening of the water by passing it through cationic and anionic exchang
In the softening of the water by passing it through cationic and anionic exchange resins, when water is passed only…
8 years ago