Time left 0:09:10Question 1Not yet answeredMarked out of 1.00Flag questionQuestion textWhich one of the following statements is incorrect for hydrogen?a.consist of a single proton and a single electron,b.exists freely in naturec.hydrogen fuel produces zero greenhouse gas emissiond.most abundant element in natureClear my choiceQuestion 2Not yet answeredMarked out of 1.00Flag questionQuestion textThe ocean thermal energy conversion (OTEC) is based on ___________.a.kinetic differenceb.energy differencec.potential differenced.temperature differenceClear my choiceQuestion 3Not yet answeredMarked out of 1.00Flag questionQuestion textWhich one of the following statements is correct for FCEV?a.generates electricity using oxygen and compressed hydrogenb.generates electricity using oxygen, compressed hydrogen, and solar cellsc.generates electricity using oxygen, compressed hydrogen, and fuel cellsd.generates electricity using solar cells
Question
Time left 0:09:10Question 1Not yet answeredMarked out of 1.00Flag questionQuestion textWhich one of the following statements is incorrect for hydrogen?a.consist of a single proton and a single electron,b.exists freely in naturec.hydrogen fuel produces zero greenhouse gas emissiond.most abundant element in natureClear my choiceQuestion 2Not yet answeredMarked out of 1.00Flag questionQuestion textThe ocean thermal energy conversion (OTEC) is based on ___________.a.kinetic differenceb.energy differencec.potential differenced.temperature differenceClear my choiceQuestion 3Not yet answeredMarked out of 1.00Flag questionQuestion textWhich one of the following statements is correct for FCEV?a.generates electricity using oxygen and compressed hydrogenb.generates electricity using oxygen, compressed hydrogen, and solar cellsc.generates electricity using oxygen, compressed hydrogen, and fuel cellsd.generates electricity using solar cells
Solution
Question 1: The incorrect statement for hydrogen is b. Hydrogen does not exist freely in nature. It is usually combined with other elements, such as oxygen in water.
Question 2: The ocean thermal energy conversion (OTEC) is based on d. temperature difference. This system works by exploiting the temperature difference between the warm surface water and the cold deep water of the ocean.
Question 3: The correct statement for FCEV (Fuel Cell Electric Vehicle) is a. FCEV generates electricity using oxygen and compressed hydrogen. The fuel cells in these vehicles combine hydrogen and oxygen to produce electricity, which then powers the electric motor.
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