A student takes about 4 mL of distilled water in four test tubes marked P, Q, R and S
Acids, Bases and Salts (10)A student takes about 4 mL of distilled water in four test tubes marked P, Q, R and S. He then dissolves in each test tube an equal amount of one salt in one test tube, namely sodium sulphate in P, potassium sulphate in Q, calcium sulphate in R and magnesium sulphate in S. After that he adds an equal amount of soap solution in each test tube. On shaking each of these test tubes well, he observes a good amount of lather (foam) in the test tubes marked
- P and Q
- Q and R
- P, Q and S
- P, R and S
Answer
A
- Exam Year: 2015
Related Questions
- The name of the salt used to remove permanent hardness of water is
- Suggest a safe procedure of diluting a strong concentrated acid
- Which one of the following natural sources contains Oxalic acid
- The pH of a salt used to make tasty and crispy pakoras is 14
- When aqueous solutions of potassium iodide and lead nitrate
- 2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube