Q. 1
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is not an alloy?
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Step-by-Step Explanation & Concept Rationale
Zinc is a pure chemical element; Bronze, Brass, and Steel are mixtures of two or more metals (alloys).
Q. 2
General Knowledge
Difficulty: Easy
(1 Mark)
Hardest substances is ————
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Step-by-Step Explanation & Concept Rationale
Diamond is an allotrope of carbon with a rigid crystal structure, making it the hardest natural material.
Q. 3
General Knowledge
Difficulty: Easy
(1 Mark)
The newly discovered high temperature superconductors are –
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Step-by-Step Explanation & Concept Rationale
High-temperature superconductors discovered in the late 1980s are typically complex ceramic materials.
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