6601746
Beschreibung
Quiz von Omar Dabbas, aktualisiert more than 1 year ago
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Erstellt von Omar Dabbas
vor mehr als 7 Jahre
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Frage 1
Frage
A car is moving with a speed of 50 km/h. Give its speed in m/s with respect to three significant figures
Antworten
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13.88 m/s
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13.9 m/s
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13.8 m/s
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13.888 m/s
Frage 2
Frage
If we want to build an electromagnet several equipment needed, which one of the following is not usually used in the construction of an electromagnet?
Antworten
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Increase the current supplied
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Increase the number of coils around the electromagnet
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Use steel as the core metal of the magnet
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Use iron as the core metal of the magnet
Frage 3
Frage
Which one of the following gives us an example where a nuclear fusion take place?
Antworten
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The reaction of Hydrogen molecules in the Sun to form Helium atoms
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The breakdown of Uranium atoms to Krypton and Barium in nuclear power stations
Frage 4
Frage
All enzymes are proteins but not all proteins enzymes.
Antworten
- True
- False
Frage 5
Frage
If we have 3500 ml of NaCl (aq) in a solution, of concentration of 5 mol/dm3(cubed), there are 17.5 mol of NaCl present in this solution.
Antworten
- True
- False
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