Practical Work — Important Questions
ICSE · Class 9 · Chemistry
43 important questions from Practical Work for ICSE Class 9 Chemistry, with answers. Includes multiple choice and multiple correct questions.
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Important Questions from Practical Work
Which of the following are characteristics of hydrogen gas? (Select all correct options)
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Colorless, Odorless, Burns with a pop sound, Neutral to litmus
Hydrogen is colorless, odorless, neutral to litmus, and burns with a characteristic pop sound when mixed with air. It does not turn litmus red as it is neutral.
Hard water contains dissolved salts of which metals?
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Calcium, Magnesium
Hard water contains dissolved bicarbonates, sulfates, and chlorides of calcium and magnesium. These salts prevent soap from forming lather easily.
What color is chlorine gas?
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Greenish yellow
Chlorine gas has a distinctive greenish yellow color and a sharp, choking odor. It is easily recognizable by its color and smell.
Which test is used to identify water vapor?
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Anhydrous copper sulfate test
Water vapor turns white anhydrous copper sulfate blue, confirming the presence of water. This is a specific test for water vapor.
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