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CTET 2 Math and Science 13 Jan 2023 Paper

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Question : 90

Total: 150

A student puts some iron nails in a beaker containing copper sulphate solution and writes the following statements in her note book after some time.
(A) The colour of solution changes from blue to pale green.
(B) The brown coating gets formed on the iron nails.
(C) Iron displaces copper from its solution.
(D) Copper is less reactive than iron.
Classify the above statements as observations or inferences.

(A) & (B) are observations; (C) & (D) are inferences
(A), (B), (C) are observations; (D) is an inference
All are observations
(A) is observation; (B), (C) & (D) are inferences

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