Ibrahim is studying the properties of bases. He knows that bases turn red litmus paper blue. What is the color of red litmus paper in a solution of sodium hydroxide?

Xia is studying weak bases. She knows that weak bases partially ionize in water. Which of the following is a weak base?

Which base is used in whitewashing?

Fatima is studying strong acids. She knows that strong acids completely ionize in water. Which of the following is a strong acid?

George is learning about alkalis. He knows that alkalis are soluble bases that release hydroxide ions in water. Which of the following is an alkali?

Which acid is used in car batteries?

Fatima is studying strong and weak bases. She knows that strong bases completely dissociate in water. Which of the following is a strong base?

A solution with pH less than 7 is:

Which acid is used in fertilizers?

Uma is learning about the concept of acids and bases. She knows that according to the Arrhenius concept, acids produce H+ ions in water. Which of the following is an Arrhenius acid?