Chemistery Quiz 1

Who proposed the first atomic theory based on experimental evidence?

• Democritus
  

• John Dalton
  

• J.J. Thomson
  

• Niels Bohr

Which subatomic particle has a neutral charge?

• Proton
  

•  Electron

•  Neutron

• Positron

Who discovered the electron and proposed the "Plum Pudding Model"?

• Niels Bohr

  
  

• J.J. Thomson

  
  

• Ernest Rutherford

  
  

• John Dalton

  
  

Which group in the periodic table contains the noble gases?

• Group 1
  

• Group 2
  

• Group 17
  

• Group 18

What happens to atomic radius as you move from left to right across a period?

•  Increases
  

•  Decreases
  

• Remains constant
  

• Increases then decreases

Which branch of chemistry focuses on carbon-based compounds?

•  Inorganic Chemistry

• Physical Chemistry
  

•  Organic Chemistry

• Analytical Chemistry

Which of the following is NOT a fundamental SI unit?

• Kelvin
  

• Joule

• Meter

• Mole

What is the significance of precision in engineering measurements?

•  It ensures standardization across industries.

•  It allows for estimation without accuracy.
  

• It eliminates the need for conversions.
  

• It prevents chemical reactions.

What unit is commonly used to measure energy in chemistry?

• Liter
  

• Joule

• Kelvin

• Mole

What is a key role of chemistry in environmental engineering?

• Designing semiconductors
  

• Waste management and pollution control
  

• Creating lubricants
  

• Improving mechanicalefficiency