Question 51 : How many types of OTEC plants are there?
1. 1
2. 2
3. 3
4. 4
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Question 52 : The production of bio ethanol is by fermenting the _________ and starch components.
1. Acid
2. Milk
3. Sugar
4. Alcohol
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Question 53 : The ___________ is used for pumping.
1. Solar energy
2. Tidal energy
3. Wind energy
4. Static energy
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Question 54 : _________ is called as the bio gas.
1. Bio ethanol
2. Bio methane
3. Bio diesel
4. Bio butanol
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Question 55 : The term biomass most often refers to ___________
1. Inorganic matter
2. Organic matter
3. Chemicals
4. Ammonium compounds
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Question 56 : Closed cycle systems use the fluid having ___________
1. High boiling points
2. Low boiling points
3. High viscosity
4. low viscosity
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Question 57 : The potential energy is turned into _________ energy in tidal barrage method.
1. kinetic energy
2. Mechanical energy
3. Chemical energy
4. Static energy
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Question 58 : Which of the following forestry materials can be used as biomass?
1. Logging residues
2. Tallow
3. Fish oil
4. Manure
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Question 59 : The transesterification is done in presence of methanol, NaOH and__________
1. KOH
2. Ca(OH)₂
3. Mg(OH)₂
4. Na(OH)₂
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Question 60 : Methanol possess ___________ inflammability.
1. Lower
2. Higher
3. No
4. Moderate
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