Science & Technology·Prelims Questions

Properties and Reactions — Prelims Questions

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Version 1Updated 9 Mar 2026

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Q1medium

Which of the following statements about the properties of metals and non-metals is INCORRECT?

Q2medium

Consider the following reactions: 1. Zinc reacts with dilute hydrochloric acid. 2. Copper reacts with dilute hydrochloric acid. 3. Iron reacts with copper sulfate solution. Which of the above reactions will produce hydrogen gas?

Q3easy

Which of the following metals is most likely to be found in its free state in nature?

Q4easy

Which of the following non-metal allotropes is an excellent conductor of electricity?

Q5hard

Consider the following statements regarding amphoteric oxides: 1. They react with both acids and bases. 2. Aluminium oxide is an example of an amphoteric oxide. 3. They are typically formed by highly reactive metals like sodium and potassium. Which of the statements given above is/are correct?