Choose first, then check both the answer and the reason.

21. Quartz and silica sand are associated broadly with which industry?

A. Hurdles B. Glass and ceramics C. Badminton D. Rice only

Answer B. Suitable silica materials feed glass and ceramic value chains.

22. Which AP geology setting is associated with natural gas?

A. Only Rayalaseema plateau B. Only Penna delta C. Krishna–Godavari basin D. Chimakurthy granite only

Answer C. IBM describes hydrocarbon potential in the KG basin.

23. KG in KG Basin expands to what?

A. Krishna–Godavari B. Kurnool–Guntur C. Kadapa–Gangavaram D. Kakinada–Guntur

Answer A. The basin is named for the Krishna and Godavari systems.

24. Tummalapalle is an AP association for which mineral?

A. Granite B. Mica C. Barytes D. Uranium

Answer D. Kadapa district's official economy page associates Tummalapalle with uranium.

25. A prospecting licence most directly permits which stage?

A. Retail sale B. Exploration under conditions C. Completed factory production D. Port cargo certification

Answer B. Prospecting is an exploration stage, not proof of commercial output.

26. An auction notice proves what?

A. The mine produced ore B. The resource is exhausted C. A legal allocation process began D. A ship sailed

Answer C. Auction is an administrative milestone, separate from extraction.

27. Which mineral-to-product pair is correct?

A. Limestone–cement B. Mica–rice C. Granite–fertiliser D. Groundnut–steel

Answer A. Cement manufacturing uses limestone.

28. Which AP coastal city combines RINL, shipbuilding and a major port?

A. Ananthapuramu B. Chimakurthy C. Satyavedu D. Visakhapatnam

Answer D. Vizag hosts those distinct heavy-industrial and maritime institutions.

29. RINL is linked with which industry?

A. Chilli B. Iron and steel C. Mango processing D. Software only

Answer B. RINL operates the Visakhapatnam Steel Plant.

30. Hindustan Shipyard's primary sector is which?

A. Cement B. Oilseed cultivation C. Shipbuilding and repair D. Chess

Answer C. The shipyard is a separate maritime industrial entity from the port.