Question:

Zinc and cold dil. HNO3 HNO_3 reacts to produce

Updated On: Jun 20, 2022
  • NO
  • NO2 N{{O}_{2}}
  • NH4NO3 N{{H}_{4}}N{{O}_{3}}
  • ZnNO3 ZnN{{O}_{3}}
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The Correct Option is C

Solution and Explanation

CH3OHCH _{3} OH and C2H5OHC _{2} H _{5} OH can be differentiated by using Na2CO3Na _{2} CO _{3} and I2,C2H5OHI_{2}, C_{2} H_{5} O H gives yellow precipitate of CHI3C H I_{3} whereas CH3OHC H_{3} O H does not react with it.
C2H5OH+4I2+Na2CO3CHI3(yellow ppt.)lodoform+5NaI+HCOONa+3CO2+H2OC _{2} H _{5} OH +4 I _{2}+ Na _{2} CO _{3} \rightarrow \underset{\overset{\text{lodoform}}{\text{(yellow ppt.)}}}{CHI_3}+5 NaI + HCOONa +3 CO _{2}+ H _{2} O
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Concepts Used:

P-Block Elements

  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
  • P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.

P block elements consist of: