03. CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES[KARNATAKA CET EXCLUSIVE]
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CHEMISTRY(KCET)

285240 The third ionisation enthalpy is highest in

1 alkali metals
2 alkaline earth metals
3 chalcogens
4 pnictogens.
Karnataka CET 2021
CHEMISTRY(KCET)

285241 The first ionization enthalpy of the following elements are in the order:

1 Q\(<\) N \(<\) Si \(<\) P
2 P\(<\) Si \(<\) N \(<\) C
3 P\(^{\prime}<\) Si \(<\) C \(<\) N
4 \(\mathrm{Si}<\mathrm{P}<\mathrm{C}<\mathrm{N}\)
Karnataka CET 2019
CHEMISTRY(KCET)

285242 Which of the following is the correct order of radius?

1 \(\mathrm{H}^{-}>\mathrm{H}^{-}>\mathrm{H}^{+}\)
2 \(\mathrm{Na}^{+}>\mathrm{F}^{-}>\mathrm{O}^{2-}\)
3 \(\mathrm{F}^{-}>\mathrm{O}^{2-}>\mathrm{Na}^{+}\)
4 \(\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}>\mathrm{Mn}^{3-}\)
Karnataka CET 2018
CHEMISTRY(KCET)

285243 Which one of the following metallic oxides exhibit amphoteric nature?

1 BaO
2 \(\mathrm{Al}_2 \mathrm{O}_3\)
3 \(\mathrm{Na}_2 \mathrm{O}\)
4 CaO
Karnataka CET 2017
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CHEMISTRY(KCET)

285240 The third ionisation enthalpy is highest in

1 alkali metals
2 alkaline earth metals
3 chalcogens
4 pnictogens.
Karnataka CET 2021
CHEMISTRY(KCET)

285241 The first ionization enthalpy of the following elements are in the order:

1 Q\(<\) N \(<\) Si \(<\) P
2 P\(<\) Si \(<\) N \(<\) C
3 P\(^{\prime}<\) Si \(<\) C \(<\) N
4 \(\mathrm{Si}<\mathrm{P}<\mathrm{C}<\mathrm{N}\)
Karnataka CET 2019
CHEMISTRY(KCET)

285242 Which of the following is the correct order of radius?

1 \(\mathrm{H}^{-}>\mathrm{H}^{-}>\mathrm{H}^{+}\)
2 \(\mathrm{Na}^{+}>\mathrm{F}^{-}>\mathrm{O}^{2-}\)
3 \(\mathrm{F}^{-}>\mathrm{O}^{2-}>\mathrm{Na}^{+}\)
4 \(\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}>\mathrm{Mn}^{3-}\)
Karnataka CET 2018
CHEMISTRY(KCET)

285243 Which one of the following metallic oxides exhibit amphoteric nature?

1 BaO
2 \(\mathrm{Al}_2 \mathrm{O}_3\)
3 \(\mathrm{Na}_2 \mathrm{O}\)
4 CaO
Karnataka CET 2017
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CHEMISTRY(KCET)

285240 The third ionisation enthalpy is highest in

1 alkali metals
2 alkaline earth metals
3 chalcogens
4 pnictogens.
Karnataka CET 2021
CHEMISTRY(KCET)

285241 The first ionization enthalpy of the following elements are in the order:

1 Q\(<\) N \(<\) Si \(<\) P
2 P\(<\) Si \(<\) N \(<\) C
3 P\(^{\prime}<\) Si \(<\) C \(<\) N
4 \(\mathrm{Si}<\mathrm{P}<\mathrm{C}<\mathrm{N}\)
Karnataka CET 2019
CHEMISTRY(KCET)

285242 Which of the following is the correct order of radius?

1 \(\mathrm{H}^{-}>\mathrm{H}^{-}>\mathrm{H}^{+}\)
2 \(\mathrm{Na}^{+}>\mathrm{F}^{-}>\mathrm{O}^{2-}\)
3 \(\mathrm{F}^{-}>\mathrm{O}^{2-}>\mathrm{Na}^{+}\)
4 \(\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}>\mathrm{Mn}^{3-}\)
Karnataka CET 2018
CHEMISTRY(KCET)

285243 Which one of the following metallic oxides exhibit amphoteric nature?

1 BaO
2 \(\mathrm{Al}_2 \mathrm{O}_3\)
3 \(\mathrm{Na}_2 \mathrm{O}\)
4 CaO
Karnataka CET 2017
Join With Us for More Updates
CHEMISTRY(KCET)

285240 The third ionisation enthalpy is highest in

1 alkali metals
2 alkaline earth metals
3 chalcogens
4 pnictogens.
Karnataka CET 2021
CHEMISTRY(KCET)

285241 The first ionization enthalpy of the following elements are in the order:

1 Q\(<\) N \(<\) Si \(<\) P
2 P\(<\) Si \(<\) N \(<\) C
3 P\(^{\prime}<\) Si \(<\) C \(<\) N
4 \(\mathrm{Si}<\mathrm{P}<\mathrm{C}<\mathrm{N}\)
Karnataka CET 2019
CHEMISTRY(KCET)

285242 Which of the following is the correct order of radius?

1 \(\mathrm{H}^{-}>\mathrm{H}^{-}>\mathrm{H}^{+}\)
2 \(\mathrm{Na}^{+}>\mathrm{F}^{-}>\mathrm{O}^{2-}\)
3 \(\mathrm{F}^{-}>\mathrm{O}^{2-}>\mathrm{Na}^{+}\)
4 \(\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}>\mathrm{Mn}^{3-}\)
Karnataka CET 2018
CHEMISTRY(KCET)

285243 Which one of the following metallic oxides exhibit amphoteric nature?

1 BaO
2 \(\mathrm{Al}_2 \mathrm{O}_3\)
3 \(\mathrm{Na}_2 \mathrm{O}\)
4 CaO
Karnataka CET 2017
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