Nitrogen and Fertilisers igcse

Which of the following is true about nitrogen?

• It is the most common gas in air

• It is unreactive as a gas

• It is needed to make all proteins

• It is taken up as a gas through the roots of plants

What are the three essential elements that plants require?

• nitrogen phosphate potassium

• nitrogen sulphur potassium

• nitrogen potassium phosphorous

• nitrogen potassium polonium

what is the catalyst used in the Haber process?

• iron

• platinum

• silver

• gold

Which of the following is untrue for the haber process?

• ammonia gas is cooled and collected as a liquid

• a really high temperature is used to speed up the reaction

• hydrogen and nitrogen are the raw materials for the reaction

• too high a pressure is unsafe

Which of the following would be a suitable fertiliser?

• nitrogen dioxide

• potassium nitrate

• copper phosphate

• nitrogen oxide

What type of bonding is in ammonia?

• metallic

• covalent molecular

• covalent network

• ionic

An inorganic, manufactured material that may contain one or more of the essential elements required for crop growth is a __________

• Fertiliser

• Manure

What do the chemical symbols N₂ and Ni represent?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Nitrogen is obtained from liquid air when it is liquified at

• 200^oC

• -200^oC

• 100^oC

• -100^oC

Choose the chemicals above that can be used to prepare ammonia in the lab

• HCl

• NaCl

• Ca(OH)₂

• NH₄Cl