Assertion : HNO3  is stronger acid than HNO2.

Reason : In HNO3 there are two nitrogen to oxygen bonds where as in HNO2 there is only one.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Concept Questions :-

group 15 ,preparation and properties
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Assertion : HNO3 oxides sulphur to H2SO4  acid ( S + VI) but only oxidizes selenium to H2SeO3 ( Se + IV ).

Reason : In Selenium atoms, the electrons are more tightly held by the nucleus on account of increased nuclear charge.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Concept Questions :-

group 15 ,preparation and properties
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Assertion : Sulphur dioxide is more powerful reducing agent in alkaline medium than in acidic
medium.

Reason :  Sulphur dioxide reacts with hydrogen sulphide in presence of moisture and sulphur is
precipitated.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Concept Questions :-

group 16,preparation and properties
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Assertion : SF6 is used as a gaseous insulator in high voltage generators.

Reason :  It is inert and has good dielectric properties.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Concept Questions :-

group 16,preparation and properties
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Assertion : Finely divided iron does not form ferric chloride with hydrochloric acid.

Reason :  Hydrochloric acid produces hydrogen gas with iron.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Concept Questions :-

group 17 ,preparation and properties
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Assertion : XeF6 reacts with small quantity of water to form XeOF4.

Reason : XeF6 reacts with glass and form XeOF4.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Concept Questions :-

group 18,perparation and properties
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Which one of the following does not exist?

(A) XeOF4

(B) NeF2

(C) XeF2

(D) XeF6 

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The hybridisation of atomic orbitals of nitrogen in NO2+,NO3- and NH4+ are 

(A) sp, sp3 and sp2 respectively

(B) sp, sp2 and sp3 respectively

(C) sp2, sp and sp3 respectively

(D) sp2, sp3 and sp respectively

Concept Questions :-

group 15 ,preparation and properties
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Which of the following hybrides is most acidic

(A) H2Te

(B) H2Se

(C) H2O

(D) H2S

Concept Questions :-

group 16,preparation and properties
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Which of the following is incorrect about H2SO4

(A) It can act as oxidising agent with copper

(B) It acts as dehydrating agent with sugar

(C) It acts as acid in its reaction with BaO2

(D) It acts as reducing agent in its reaction with Cu2O

Concept Questions :-

group 16,preparation and properties
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