JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
Given below are two statements Statement \(I : CeO _{2}\) can be used for oxidation of aldehydes and ketones. Statement \(II :\) Aqueous solution of \(EuSO _{4}\) is a strong reducing agent. In the light of the above statements, choose the correct answer from the options given below
- A Statement \(I\) is false but statement \(II\) is true
- B Statment \(I\) is true but statement \(II\) is false
- C Both statement \(I\) and statement \(II\) are true
- D Both statement \(I\) and statement \(II\) are false
Answer & Solution
Correct Answer
(C) Both statement \(I\) and statement \(II\) are true
Step-by-step Solution
Detailed explanation
The \(+3\) oxidation state of lanthanide is most stable and therefore lanthanide in \(+4\) oxidation state has strong tendence to gain \(e ^{-}\) and converted into \(+3\) and therefore act as strong oxidizing agent. \(eg Ce ^{+4}\) And there fore \(CeO _{2}\) is used to…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Among the given organic compounds, the total number of aromatic compounds is___________
JEE Mains 2024 Hard - \(250\ mL\) of a waste solution obtained from the workshop of a goldsmith contains \(0.1\, M AgNO _{3}\) and \(0.1\, M\) AuCl. The solution was electrolyzed at \(2\, V\) by passing a current of \(1 \,A\) for \(15\) minutes. The metal/metals electropositive will be \(\left(E_{A g^{+} / A g}^{0}=0.80\, V, E_{A n^{+} / A u}^{0}=1.69\, V\right)\)JEE Mains 2020 Medium
- What happens to freezing point of benzene when small quantity of napthalene is added to benzene?JEE Mains 2024 Hard
- Aqueous solution of which of the following boron compounds will be strongly basic in nature?JEE Mains 2022 Medium
- For water at \(100^{\circ} \mathrm{C}\) and \(1\, bar,\) \(\Delta_{\text {vap }} \mathrm{H}-\Delta_{\text {vap }} \mathrm{U}=...... \times 10^{2} \,\mathrm{~J}\, \mathrm{~mol}^{-1}\). (Round off to the NearestInteger) \(\left[\right.\) Use : \(\left.R=8.31\, \mathrm{~J}\, \mathrm{~mol}^{-1}\, \mathrm{~K}^{-1}\right]\) [Assume volume of \(\mathrm{H}_{2} \mathrm{O}(\mathrm{l})\) is much smaller than volume of \(\mathrm{H}_{2} \mathrm{O}(\mathrm{g})\). Assume \(\mathrm{H}_{2} \mathrm{O}(\mathrm{g})\) treated as an ideal gas]JEE Mains 2021 Hard
- Potassium chlorate is prepared by the electrolysis of \(KCl\) in basic solution \(6 OH ^{-}+ Cl ^{-} \rightarrow ClO _{3}^{-}+3 H _{2} O +6 e ^{-}\) If only \(60 \%\) of the current is utilized in the reaction, the time (rounded to the nearest hour) required to produce \(10\, g\) of \(KCIO _{3}\) using a current of \(2\, A\) is.......... (Given : \(F =96,500\, C\, mol ^{-1}\) molar mass of \(\left. KClO _{3}=122\,gmol ^{-1}\right)\)JEE Mains 2020 Medium
More PYQs from JEE Mains
- Let \(\vec{a}=6 \hat{i}+\hat{j}-\hat{k}\) and \(\vec{b}=\hat{i}+\hat{j}\). If \(\vec{c}\) is a is vector such that \(|\vec{c}| \geq 6, \vec{a} \cdot \vec{c}=6|\vec{c}|,|\vec{c}-\vec{a}|=2 \sqrt{2}\) and the angle between \(\vec{a} \times \vec{b}\) and \(\vec{c}\) is \(60^{\circ}\), then \(|(\vec{a} \times \vec{b}) \times \vec{c}|\) is equal to :JEE Mains 2024 Hard
- An ice cube of dimensions \(60\,cm \times 50\,cm \times 20\,cm\) is placed in an insulation box of wall thickness \(1\,cm\). The box keeping the ice cube at \(0^{\circ}\,C\) of temperature is brought to a room of temperature \(40^{\circ}\,C\). The rate of melting of ice is approximately. (Latent heat of fusion of ice is \(3.4 \times 10^{5}\,J\,kg ^{-1}\) and thermal conducting of insulation wall is \(0.05\,Wm ^{-10} C ^{-1}\) )JEE Mains 2022 Hard
- Given below are two statements: Statement \(I\): IUPAC name of \(\mathrm{HO}-\mathrm{CH}_2-\left(\mathrm{CH}_2\right)_3-\) \(\mathrm{CH}_2-\mathrm{COCH}_3\) is \(7\)-hydroxyheptan-2-one. Statement \(II\): \(2\)-oxoheptan-\(7\)-ol is the correct IUPAC name for above compound In the light of the above statements.
choose the most appropriate answer from the options given below:JEE Mains 2024 Hard - The wavelength of an electron and a neutron will become equal when the velocity of the electron is \(x\) times the velocity of neutron. The value of \(x\) is (Nearest Integer)(Mass of electron is \(9.1 \times 10^{-31} kg\) and mass of neutron is \(1.6 \times 10^{-27}\,kg\) )JEE Mains 2022 Medium
- The number of numbers greater than 5000, less than 9000 and divisible by 3, that can be formed using the digits 0, 1, 2, 5, 9, if the repetition of the digits is allowed, is ___ .JEE Mains 2026 Easy
- \(4.0\,moles\) of argon and \(5.0\, moles\) of \(PCI _{5}\) are introduced into an evacuated flask of \(100\, litre\) capacity at \(610\, K\). The system is allowed to equilibrate. At equilibrium, the total pressure of mixture was found to be \(6.0 \,atm\). The \(K _{ p }\) for the reaction is ...... [Given : \(R=0.082 \,L \,atm\, K ^{-1}\, mol ^{-1}\) ]JEE Mains 2022 Hard