Hydrogen KIK

In a hydrogen fuel cell car, electricity is produced on board the vehicle with the help of hydrogen and ……….

• Carbon

• Nitrogen

• Oxygen

• Phosphorus

What are the waste products of a hydrogen fuel cell car?

• Oxygen

• Carbon dioxide

• Water vapour and warm water

• All of the answers

1. What are the benefits of using hydrogen fuel cell cars?

• 1. Low fuel cost 

• Low cost for new car

• No air pollution

• Many charging stations

The  figure below shows the electron configuration of Hydrogen (H) atom. How many valence electrons are there?

• 2

• 4

• 1

• 8

Energy produced by green hydrogen will reduce

• hydrogen in atmosphere

• carbon dioxide in atmosphere

• nitrogen gas in atmosphere

• phosphorus in atmosphere

What is the type of bond occurred between hydrogen and another electronegative atom?

• Chemical bond

• Disulphide bridge

• Hydrogen bond

• Ionic bond

There are _____ hydrogen atoms and one oxygen atom make up one water molecule

• 2

• 3

• 4

• 5

Green hydrogen produced by separating

• oxygen and hydrogen

• carbon and hydrogen

• oxygen and carbon

• hydrogen and nitrogen

Hydrogen (H) consists of _______ valence electrons.

• 5

• 3

• 1

• 2

2. Electronic configuration for hydrogen (H)

• 1s2 2s1

• 1s² 2s²

• 1s¹ 2s¹

• 1s1