00. Valency and Oxidation State
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Classification of Elements and Periodicity in Properties

89309 Which of the following does not have valence electron in 3d-subshell?

1 $\mathrm{Fe}$ (III)
2 $\mathrm{Cr}(\mathrm{I})$
3 $\mathrm{Mn}$ (II)
4 $\mathrm{P}(0)$
BITSAT-2012
Classification of Elements and Periodicity in Properties

89313 Assertion: $\mathrm{I}_2 \mathrm{O}_5$ is used to detect $\mathrm{CO}$.
Reason: In $\mathrm{I}_2 \mathrm{O}_5$ the oxidation number of $\mathrm{I}$ is 5 .

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS 26 May 2019 (Morning)
Classification of Elements and Periodicity in Properties

89315 Assertion: $\mathrm{S}_2 \mathrm{O}_7^{2-} \& \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ both exist.
Reason: Both have same valence electrons.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS 26 May 2019 (Morning)
Classification of Elements and Periodicity in Properties

89322 One mole of $\mathrm{N}_2 \mathrm{H}_4$ loses 10 moles of electrons to form a new compound $Z$. Assuming that all the nitrogens appear in the new compound, what is the oxidation state of nitrogen in $Z$ ? (There is no change in the oxidation state of hydrogen.)

1 -1
2 -3
3 +3
4 +5
AP EAMCET (Engg.) 2012
For More Updates join with Us
Classification of Elements and Periodicity in Properties

89309 Which of the following does not have valence electron in 3d-subshell?

1 $\mathrm{Fe}$ (III)
2 $\mathrm{Cr}(\mathrm{I})$
3 $\mathrm{Mn}$ (II)
4 $\mathrm{P}(0)$
BITSAT-2012
Classification of Elements and Periodicity in Properties

89313 Assertion: $\mathrm{I}_2 \mathrm{O}_5$ is used to detect $\mathrm{CO}$.
Reason: In $\mathrm{I}_2 \mathrm{O}_5$ the oxidation number of $\mathrm{I}$ is 5 .

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS 26 May 2019 (Morning)
Classification of Elements and Periodicity in Properties

89315 Assertion: $\mathrm{S}_2 \mathrm{O}_7^{2-} \& \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ both exist.
Reason: Both have same valence electrons.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS 26 May 2019 (Morning)
Classification of Elements and Periodicity in Properties

89322 One mole of $\mathrm{N}_2 \mathrm{H}_4$ loses 10 moles of electrons to form a new compound $Z$. Assuming that all the nitrogens appear in the new compound, what is the oxidation state of nitrogen in $Z$ ? (There is no change in the oxidation state of hydrogen.)

1 -1
2 -3
3 +3
4 +5
AP EAMCET (Engg.) 2012
NEET DIGITAL LIBRARY
Classification of Elements and Periodicity in Properties

89309 Which of the following does not have valence electron in 3d-subshell?

1 $\mathrm{Fe}$ (III)
2 $\mathrm{Cr}(\mathrm{I})$
3 $\mathrm{Mn}$ (II)
4 $\mathrm{P}(0)$
BITSAT-2012
Classification of Elements and Periodicity in Properties

89313 Assertion: $\mathrm{I}_2 \mathrm{O}_5$ is used to detect $\mathrm{CO}$.
Reason: In $\mathrm{I}_2 \mathrm{O}_5$ the oxidation number of $\mathrm{I}$ is 5 .

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS 26 May 2019 (Morning)
Classification of Elements and Periodicity in Properties

89315 Assertion: $\mathrm{S}_2 \mathrm{O}_7^{2-} \& \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ both exist.
Reason: Both have same valence electrons.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS 26 May 2019 (Morning)
Classification of Elements and Periodicity in Properties

89322 One mole of $\mathrm{N}_2 \mathrm{H}_4$ loses 10 moles of electrons to form a new compound $Z$. Assuming that all the nitrogens appear in the new compound, what is the oxidation state of nitrogen in $Z$ ? (There is no change in the oxidation state of hydrogen.)

1 -1
2 -3
3 +3
4 +5
AP EAMCET (Engg.) 2012
Join With Us for More Updates
Classification of Elements and Periodicity in Properties

89309 Which of the following does not have valence electron in 3d-subshell?

1 $\mathrm{Fe}$ (III)
2 $\mathrm{Cr}(\mathrm{I})$
3 $\mathrm{Mn}$ (II)
4 $\mathrm{P}(0)$
BITSAT-2012
Classification of Elements and Periodicity in Properties

89313 Assertion: $\mathrm{I}_2 \mathrm{O}_5$ is used to detect $\mathrm{CO}$.
Reason: In $\mathrm{I}_2 \mathrm{O}_5$ the oxidation number of $\mathrm{I}$ is 5 .

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS 26 May 2019 (Morning)
Classification of Elements and Periodicity in Properties

89315 Assertion: $\mathrm{S}_2 \mathrm{O}_7^{2-} \& \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ both exist.
Reason: Both have same valence electrons.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS 26 May 2019 (Morning)
Classification of Elements and Periodicity in Properties

89322 One mole of $\mathrm{N}_2 \mathrm{H}_4$ loses 10 moles of electrons to form a new compound $Z$. Assuming that all the nitrogens appear in the new compound, what is the oxidation state of nitrogen in $Z$ ? (There is no change in the oxidation state of hydrogen.)

1 -1
2 -3
3 +3
4 +5
AP EAMCET (Engg.) 2012
For More Updates join with Us