Chemistry
Hydrogen chloride gas is a …………… (pure/impure) substance, but when it is dissolved in water then it is a …………… (homogeneous/heterogeneous) mixture.
Related Questions
To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.
How will you justify that air is a mixture and not an element or compound ?
Rani got a cut on her finger while working in the kitchen. She applied an antiseptic liquid to stop bleeding but it was not effective. Her husband asked her to rub alum on the cut. To her surprise, the bleeding stopped.
(a) Why was the antiseptic liquid not effective ?
(b) What was the use of alum here ?
(c) Who according to you has a proper knowledge of colloidal solutions - Rani or her husband ?
When a beam of light was passed through the solution of a substance 'X' dissolved in water, the path of light could be seen. What is the nature of this solution ?