General characteristics of the transition elements
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CHXII08:THE D- & F-BLOCK ELEMENTS

321401 The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is ____.
\(\mathrm{Ti}^{2+}, \mathrm{Cr}^{2+} \text { and } \mathrm{V}^{2+}\)

1 0
2 1
3 3
4 2
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321402 Assertion :
Copper sulphate solution is not stored in zinc vessel.
Reason :
Zinc forms complex with \(\mathrm{CuSO}_{4}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321403 Some metals tend to develop a highly unreactive surface when brought into contact with powerful oxidizing agents. A metal that is rended passively by concentrated \(\mathrm{\mathrm{HNO}_{3}}\) is

1 iron because of an oxide coating
2 iron because of an nitrate coating
3 copper because of its oxide coating
4 Zinc because of its nitride coating
CHXII08:THE D- & F-BLOCK ELEMENTS

321404 Why does copper not replace hydrogen from acids ?

1 \(\mathrm{\mathrm{Cu}}\) is more electropositive than \(\mathrm{\mathrm{H}}\)
2 \(\mathrm{\mathrm{Cu}}\) is metal while \(\mathrm{\mathrm{H}}\) is non metal
3 \(\mathrm{\mathrm{Cu}}\) shows positive \(\mathrm{\mathrm{E}^{0}}\) value
4 Both (1) and (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321405 Assertion :
Zinc becomes dull in moist air.
Reason :
Zinc is coated by a thin film of its basic carbonate in moist air.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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CHXII08:THE D- & F-BLOCK ELEMENTS

321401 The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is ____.
\(\mathrm{Ti}^{2+}, \mathrm{Cr}^{2+} \text { and } \mathrm{V}^{2+}\)

1 0
2 1
3 3
4 2
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321402 Assertion :
Copper sulphate solution is not stored in zinc vessel.
Reason :
Zinc forms complex with \(\mathrm{CuSO}_{4}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321403 Some metals tend to develop a highly unreactive surface when brought into contact with powerful oxidizing agents. A metal that is rended passively by concentrated \(\mathrm{\mathrm{HNO}_{3}}\) is

1 iron because of an oxide coating
2 iron because of an nitrate coating
3 copper because of its oxide coating
4 Zinc because of its nitride coating
CHXII08:THE D- & F-BLOCK ELEMENTS

321404 Why does copper not replace hydrogen from acids ?

1 \(\mathrm{\mathrm{Cu}}\) is more electropositive than \(\mathrm{\mathrm{H}}\)
2 \(\mathrm{\mathrm{Cu}}\) is metal while \(\mathrm{\mathrm{H}}\) is non metal
3 \(\mathrm{\mathrm{Cu}}\) shows positive \(\mathrm{\mathrm{E}^{0}}\) value
4 Both (1) and (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321405 Assertion :
Zinc becomes dull in moist air.
Reason :
Zinc is coated by a thin film of its basic carbonate in moist air.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
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NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII08:THE D- & F-BLOCK ELEMENTS

321401 The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is ____.
\(\mathrm{Ti}^{2+}, \mathrm{Cr}^{2+} \text { and } \mathrm{V}^{2+}\)

1 0
2 1
3 3
4 2
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321402 Assertion :
Copper sulphate solution is not stored in zinc vessel.
Reason :
Zinc forms complex with \(\mathrm{CuSO}_{4}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321403 Some metals tend to develop a highly unreactive surface when brought into contact with powerful oxidizing agents. A metal that is rended passively by concentrated \(\mathrm{\mathrm{HNO}_{3}}\) is

1 iron because of an oxide coating
2 iron because of an nitrate coating
3 copper because of its oxide coating
4 Zinc because of its nitride coating
CHXII08:THE D- & F-BLOCK ELEMENTS

321404 Why does copper not replace hydrogen from acids ?

1 \(\mathrm{\mathrm{Cu}}\) is more electropositive than \(\mathrm{\mathrm{H}}\)
2 \(\mathrm{\mathrm{Cu}}\) is metal while \(\mathrm{\mathrm{H}}\) is non metal
3 \(\mathrm{\mathrm{Cu}}\) shows positive \(\mathrm{\mathrm{E}^{0}}\) value
4 Both (1) and (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321405 Assertion :
Zinc becomes dull in moist air.
Reason :
Zinc is coated by a thin film of its basic carbonate in moist air.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
NEET DIGITAL LIBRARY
CHXII08:THE D- & F-BLOCK ELEMENTS

321401 The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is ____.
\(\mathrm{Ti}^{2+}, \mathrm{Cr}^{2+} \text { and } \mathrm{V}^{2+}\)

1 0
2 1
3 3
4 2
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321402 Assertion :
Copper sulphate solution is not stored in zinc vessel.
Reason :
Zinc forms complex with \(\mathrm{CuSO}_{4}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321403 Some metals tend to develop a highly unreactive surface when brought into contact with powerful oxidizing agents. A metal that is rended passively by concentrated \(\mathrm{\mathrm{HNO}_{3}}\) is

1 iron because of an oxide coating
2 iron because of an nitrate coating
3 copper because of its oxide coating
4 Zinc because of its nitride coating
CHXII08:THE D- & F-BLOCK ELEMENTS

321404 Why does copper not replace hydrogen from acids ?

1 \(\mathrm{\mathrm{Cu}}\) is more electropositive than \(\mathrm{\mathrm{H}}\)
2 \(\mathrm{\mathrm{Cu}}\) is metal while \(\mathrm{\mathrm{H}}\) is non metal
3 \(\mathrm{\mathrm{Cu}}\) shows positive \(\mathrm{\mathrm{E}^{0}}\) value
4 Both (1) and (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321405 Assertion :
Zinc becomes dull in moist air.
Reason :
Zinc is coated by a thin film of its basic carbonate in moist air.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Join With Us for More Updates
CHXII08:THE D- & F-BLOCK ELEMENTS

321401 The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is ____.
\(\mathrm{Ti}^{2+}, \mathrm{Cr}^{2+} \text { and } \mathrm{V}^{2+}\)

1 0
2 1
3 3
4 2
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321402 Assertion :
Copper sulphate solution is not stored in zinc vessel.
Reason :
Zinc forms complex with \(\mathrm{CuSO}_{4}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321403 Some metals tend to develop a highly unreactive surface when brought into contact with powerful oxidizing agents. A metal that is rended passively by concentrated \(\mathrm{\mathrm{HNO}_{3}}\) is

1 iron because of an oxide coating
2 iron because of an nitrate coating
3 copper because of its oxide coating
4 Zinc because of its nitride coating
CHXII08:THE D- & F-BLOCK ELEMENTS

321404 Why does copper not replace hydrogen from acids ?

1 \(\mathrm{\mathrm{Cu}}\) is more electropositive than \(\mathrm{\mathrm{H}}\)
2 \(\mathrm{\mathrm{Cu}}\) is metal while \(\mathrm{\mathrm{H}}\) is non metal
3 \(\mathrm{\mathrm{Cu}}\) shows positive \(\mathrm{\mathrm{E}^{0}}\) value
4 Both (1) and (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321405 Assertion :
Zinc becomes dull in moist air.
Reason :
Zinc is coated by a thin film of its basic carbonate in moist air.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.