Question 7 — Complete the following flow chart (related - Questions at the end of the chapter - Chapter 4 Class 7 - The World of Metals and Non-metals (Curiosity)

Last updated at August 17, 2026 by

Q7 (Medium): Complete the following flow chart (related to burning and testing with litmus).

Answer:
We have studied that burning materials in oxygen produces oxides which can be tested with litmus . Based on the science:

Burning and Litmus Testing Step 1 - Burn Material Metal or non-metal burns in oxygen Step 2 - Oxide Forms Metal oxide (basic) or non-metal oxide (acidic) Step 3 - Dissolve in Water Oxide dissolves to form solution Step 4 - Test with Litmus Basic turns red litmus blue, acidic turns blue litmus red Nature of material identified!
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