mediumFPSCNTSCSSPPSCChemistry
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View all1Vertical columns in the periodic table of elements are called as__________?2The 2026 World Baseball Classic was held in which two countries?3According to the report “Cost of Inaction Tool” developed by Nutrition International Pakistan has ______ highest prevalence of anaemia in adolescent girls and women in the 201 countries worldwide.
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Correct Answer: A: Silicon Dioxide
Explanation: The correct answer is A: Silicon Dioxide. The chemical name of quartz is Silicon Dioxide (SiO₂). Quartz is one of the most abundant minerals in the Earth's crust and is used in electronics, glass making, and jewelry.