Acids and Alkalis - (More information at: http://www.educationquizzes.com/ks3/science/acids-and-alkalis-01/ )
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Which of the following pH numbers indicates a strong acid? -1 -5 -7 -14
-1
Which of the following pH numbers indicate a strong alkali? -1 -5 -9 -14
-14
Which of the following pH numbers indicates a neutral substance? -1 -5 -7 -14
-7
Which of the following substances contain acid? -An orange -Bleach -Distilled water -Washing powder
-An orange
Which of the following substances contain an alkali? -Baking powder -Coca cola -Distilled water -Vinegar
-Baking powder
What colour is universal indicator in a neutral solution? -Green -Orange -Purple -Red
-Green
What colour is universal indicator in a strong alkali? -Green -Orange -Purple -Red
-Purple
What colour is universal indicator in strong acid? -Green -Orange -Purple -Red
-Red