QUESTION WRONG

Arrange these spectral regions in order of increasing frequency (X-rays, Microwaves, Ultraviolet, Visible).

• Microwaves < Visible < X-rays < Ultraviolet

  
  

• Ultraviolet < X-rays < Visible < Microwaves

• Microwaves < Visible < Ultraviolet < X-rays

• X-rays < Microwaves < Ultraviolet < Visible

Which of these forms of electromagnetic radiation is used in the treatment of cancer tumors?

•  

  Gamma radiation

•  

  Infrared radiation

•  

  Ultraviolet radiation

•  

  Microwave radiation

• all the above

Arrange these spectral regions in order of increasing wavelength (Infrared, Radio waves, Ultraviolet, Visible).

•  

  Radio waves < Infrared < Visible < Ultraviolet

•  

  Radio waves < Visible < Infrared < Ultraviolet

•  

  Ultraviolet < Infrared < Visible < Radio waves

•  

  Ultraviolet < Visible < Infrared < Radio waves

•  

  Infrared < Radio waves < Ultraviolet < Visible

Energy of light is _____.

•  

  inversely proportional to its frequency and proportional to its wavelength

  
  

•  

  proportional to its frequency and inversely proportional to its wavelength

•  

  inversely proportional to its frequency and wavelength

•  

  proportional to its frequency and wavelength

•  

  independent of its frequency and energy

Which of these involve(s) a net increase in entropy?

I. The condensation of steam

II. The freezing of methanol

III. The evaporation of ethanol

IV. The combustion of fossil fuels

•  

  III only

•  

  I and II

•  

  II and III

•  

  I, II, and IV

•  

  III, and IV

Which of the following processes involve(s) a net decrease of entropy?

I. The condensation of steam

II. The freezing of methanol

III. The evaporation of ethanol

IV. The boiling of water

•  

  III only

•  

  I and II

•  

  II and III

•  

  I, II, and IV

•  

  I, II, III, and IV

Rank the following gases in the increasing order of their abundance in the atmosphere.
(O₂, N₂, H₂, He, CO₂)

•  

  O₂ < N₂ < H₂ < He < CO₂

•  

  N₂ < O₂ < H₂ < He < CO₂

•  

  H₂ < He < CO₂ < O₂ < N₂

•  

  H₂ < He < O₂ < CO₂ < N₂

•  

  CO₂ < He < H₂ < O₂ < N₂

Molarity is defined as the number of moles of _____ per liter of _____.

• solvent solution

• solute ;solution

•  

  solution; solvent

•  

  solvent; solute 

In osmosis, ____________ molecules pass through a semi permeable membrane from the solution of ________ concentration to the solution of ____________ concentration.

•  

  solvent, lower, higher

•  

  solute, higher, lower

•  

  solute, lower, higher

•  

  solvent, lower, higher

Which of these gases is the most abundant in the earth's atmosphere?

• O₂

•  

  N₂

•  

  CO₂