Chemistry
Give one word for the following statements:
(a) The compounds of various metals found in nature with earthly impurities.
(b) A homogeneous mixture of two or more metals or a metal and a non-metal in specific ratios.
Related Questions
Study the diagram, which shows the Brown Ring Test and answer the questions given below:
![Study the diagram, which shows the Brown Ring Test and answer the questions. Which ion is determined by Brown Ring Test? Why is freshly prepared iron[II] sulphate used in the test? Name the substance Z. ICSE 2022 Chemistry Solved Question Paper.](https://cdn1.knowledgeboat.com/img/abp10/7/q5iv-icse-2022-chemistry-question-paper-solved-278x293.png)
(a) Which ion is determined by Brown Ring Test?
(b) Why is freshly prepared iron[II] sulphate used in the test?
(c) Name the substance Z.
Identify the acid in each case:
(a) The acid formed when sulphur reacts with concentrated nitric acid.
(b) An acid, which on adding to lead nitrate solution produces a white precipitate which is soluble on heating.
(c) The acid formed when potassium nitrate reacts with a least volatile acid.
Distinguish between the following as directed:
(a) Sodium sulphite solution and sodium sulphate solution. [using dilute H2SO4]
(b) Lead salt solution and zinc salt solution. [using NH4OH solution in excess]
Match column A with column B:
Name (A) Functional group (B) 1. Aldehyde (a) —OH 2. Carboxylic acids (b) —CHO 3. Alcohol (c) —COOH