Theme 1 : Ecofrontier

Which type of hydrogen is produced using renewable energy sources like wind or solar power through electrolysis?

• 1. Grey Hydrogen

• 1. Blue Hydrogen

• 1. Green Hydrogen

• 1. Black Hydrogen

Hydrogen has a lower energy density than methane.

• True
• False

A proton exchange membrane (PEM) allows ____ to pass through while blocking electrons.

What is the primary byproduct of complete hydrogen combustion?

• Carbon Dioxide (CO₂)

• 1. Water Vapor (H₂O)

• 1. Nitrogen Oxides (NOₓ)

• Carbon Monoxide (CO)

In a Proton Exchange Membrane (PEM) fuel cell, at which electrode does hydrogen gas typically enter?

•  Anode (negative electrode)

• Cathode (positive electrode)

• Electrolyte

• Membrane

The pop test is a qualitative test for hydrogen. What potential safety hazard should be considered when performing this test?

•  The risk of producing toxic gases

• The corrosive nature of the gas produced.

• The possibility of electric shock.

• The potential for a small explosion due to the rapid combustion of hydrogen.

The unit commonly used by electricity companies to measure the amount of electricity consumed by a household is:

• Watt (W)
  

• Ampere (A)

• Kilowatt-hour (kWh) 

• Volt (V)

What does a 5-star rating mean for an appliance?

• Faster performance

• Energy-efficient and cost-saving 

• Higher electricity consumption 

• Longer warranty

A 5-star AC runs for 5 hours/day using 1 kW. What is 30 days usage for that appliance?

• 30 kWh

• 150 kWh

• 90 kWh

• 60 kWh

In Malaysia, which organization or body typically oversees and regulates the energy efficiency labeling (including star ratings) of electrical appliances?

• Suruhanjaya Tenaga (Energy Commission)

• Kementerian Kewangan (Ministry of Finance)

• Jabatan Alam Sekitar (Department of Environment)

• SIRIM (Standard and Industrial Research Institute of Malaysia)