no colour reaction is seen in a test solution or diluted test solution.

How would the previous sentence be correctly capitalized?
Answer: No colour reaction is seen in a test solution or diluted test solution.
this first framing of the piece will inevitably expand the instance the spectator's reflection of or wonder at the extreme heat replaces the simple registering.

How would the previous sentence be correctly capitalized?
Answer: This first framing of the piece will inevitably expand the instance the spectator's reflection of or wonder at the extreme heat replaces the simple registering.
as the war proceeded, the policy developed of using jewish detainees for labour in the war-effort.

How would the previous sentence be correctly capitalized?
Answer: As the war proceeded, the policy developed of using Jewish detainees for labour in the war-effort.
after joining the dominican order, he studied and taught at padua, bologna, cologne and other german convents in hildesheim, freiburg, ratisbon, strasburg, and cologne.

How would the previous sentence be correctly capitalized?
Answer: After joining the Dominican Order, he studied and taught at Padua, Bologna, Cologne and other German convents in Hildesheim, Freiburg, Ratisbon, Strasburg, and Cologne.