Questions and Answers
Which of the following is a necessary condition for work to be performed?
An applied force
What is the unit of energy?
Joule
Which of the following equations represents the work done by a constant force?
$W = F \times d \times \cos(\theta)$
Which of the following is a form of potential energy?
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According to the law of conservation of energy, energy cannot be
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Which separation technique would be most effective for separating mercury and water?
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What is the separation technique used to separate potassium chloride and ammonium chloride?
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Which combination of separation techniques would be most effective for separating common salt, water, and sand?
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Which combination of separation techniques would be most effective for separating kerosene oil, water, and salt?
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Which tube in Fig. 2.1 (a) and (b) would be more effective as a condenser in the distillation apparatus?
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