1. What is the relationship between the magnetic susceptibility of a paramagnetic substance and the absolute temperature T? λ
A. constant λT =B. constant λ T =C. constant λ + T =D. constant λ − T =
2. What is the source of gas used in semi-micro method? H2S
A. H2NCSNH2 + H2OB. diluted F eS+ H2SO4C. diluted F eSO4 + H2SO4D. CH3CSNH2 + H2O
3. Through the azimuthal quantum number, which of the following can be understood?
A. Shape of the subshellB. Size of the principal energy levelC. Three-dimensional arrangement of the subshellD. Nature and direction of the electron’s spin
4. Which one is not correct regarding use?
A. Westrosol → Dry wash liquidB. Westron → InsecticideC. BCF → Fire extinguisherD. Freons → Freezer liquid CCl4 (CT C), CBr2ClF (BCF )
5. What is the angle between and? →
A. × →B. →C. + → BD. 90∘
6. Which industry is associated with biscuit firing?
A. GlassB. CeramicC. PaperD. Leather