Day 430: JEE Mains Chemistry

1. A.
   $N^{3 -}$
2. B.
   ${SO}_{4}^{2 -}$
3. C.
   ${BrO}_{3}^{-}$
4. D.
   ${MnO}_{4}^{-}$

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1. A.
   Statement I is true but Statement II is false.
2. B.
   Both Statement I and Statement II are true.
3. C.
   Statement I is false but Statement II is true.
4. D.
   Both Statement I and Statement II are false.

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1. A.
   prevent interference by phosphate ions
2. B.
   decrease concentration of $\ ^{-}OH$ ions
3. C.
   increase concentration of ${Cl}^{-}$ions
4. D.
   increase concentration of ${NH}_{4}^{+}$ions

Tap an option to check your answer.

1. A.
   ${PH}_{3}$ shows lower proton affinity than ${NH}_{3}$.
2. B.
   ${PF}_{3}$ exists but ${NF}_{5}$ does not.
3. C.
   ${NO}_{2}$ can dimerise easily.
4. D.
   ${SO}_{2}$ can act as an oxidizing agent, but not as a reducing agent.

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1. A.
   (A)-(III), (B)-(II), (C)-(I), (D)-(IV)
2. B.
   (A)-(IV), (B)-(II), (C)-(III), (D)-(I)
3. C.
   (A)-(I), (B)-(IV), (C)-(II), (D)-(III)
4. D.
   (A)-(II), (B)-(IV), (C)-(I), (D)-(III)

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