Question
Easy

(A) Metal oxides are basic in nature. (B) Air expands on heating. (C) Lime water turns milky on passing carbondioxide. (D) Sodium hydroxide and hydrochloric acid neutralise each other. If observation is represented by O and inference by I, which of the following statements is correct ?

1
O - C, D; I - A, B
2
O - B, C; I - A, D
3
O - C; I - A, B, D
4
O - A, B; I - B, C
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: Acids, Bases, and Salts
Topic: Introduction
Correct Answer
Option C
Explanation

Option 3 is the correct answer because it accurately categorizes the statements into observations (O) and inferences (I) based on their nature. 1. Explanation for Option 3: - O - C: "Lime water turns milky on passing carbon dioxide" is an observation. This is a direct, observable phenomenon that occurs when carbon dioxide is bubbled through lime water (calcium hydroxide solution), resulting in the formation of calcium carbonate, which causesтАжRead More

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