Created on 18th August 2025
What happens when a piece of charcoal enclosed in a cylinder containing air is ignited? |
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Salts Y and Z were left exposed in the laboratory overnight. Y gained weight while Z became liquid. What can be inferred about these salts? |
Which statement is true regarding the reactions in the blast furnace during iron production? |
Which technique can demonstrate that chlorophyll pigment is a mixture of compounds? |
How can ammonium chloride be removed from a mixture of sand and sugar after accidentally adding it to the mixture? |
What is a common method to separate a mixture of sand and salt? |
Which of the following describes a physical separation technique? |
What would be the result of adding water to a mixture of oil and salt? |
In the context of separation techniques, what is the purpose of centrifugation? |
Which method is best suited for separating a liquid from a solid in a mixture? |
What type of mixture can be separated by evaporation? |
Which of the following is an example of a chemical separation technique? |
Which separation technique relies on differences in boiling points? |
What happens when a saturated solution of salt is cooled? |
Which process can separate a solid from a liquid based on particle size? |
What type of mixture is created when sand is mixed with water? |
Which separation method would you use for separating an insoluble solid from a liquid? |
Which of the following substances would most likely be removed using sublimation? |
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