How can quartzite be distinguished from quartz sandstone? a. the mineral compositions are different. b. quartzite is not granular, while sandstone is granular. c. quartz sandstone has undergone metamorphism, while quartzite has not. d. a broken piece of quartzite will break through, not around, quartz sand grains.

1b. convection2f. the same

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.