KCET · Chemistry · d and f Block Elements
Which of the following statement is wrong?
- A Metals in highest oxidation states are more stable in oxides than in fluorides.
- B All elements of \( 3 d \) series exhibit variable oxidation states.
- C In highest oxidation states, the transition metals show acidic character.
- D \( M n^{3+} \) and \( C o^{3+} \) are oxidizing agents in aqueous solution.
Answer & Solution
Correct Answer
(B) All elements of \( 3 d \) series exhibit variable oxidation states.
Step-by-step Solution
Detailed explanation
(B)
Zn doesn't exhibit variable oxidation states.
Zn doesn't exhibit variable oxidation states.
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
- \(\begin{aligned} & \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{OH} \stackrel{\mathrm{PCC}}{\longrightarrow} \\ & \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO}\end{aligned}\)
Hybridisation change involved at \(\mathrm{C}-1\) in the above reaction.KCET 2023 Easy - The rate of the reaction, \(\mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5+\mathrm{NaOH} \longrightarrow \mathrm{CH}_3 \mathrm{COONa}+\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\) is given by the equation, rate \(=k\left[\mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5\right][\mathrm{NaOH}]\). If concentration is expressed in \(\mathrm{mol}^{-1}\), the unit of \(k\) isKCET 2022 Easy
- The number of disulphide linkages present in insulin areKCET 2013 Medium
- A pure compound contains \(2.4 \mathrm{~g}\) of \(C\), \(1.2 \times 10^{23}\) atoms of \(\mathrm{H}, 0.2\) moles of oxygen atoms. Its empirical formula isKCET 2021 Easy
- Which of the following cations will have minimum flocculation value for arsenic sulphide sol?KCET 2013 Medium
- A ligand is aKCET 2012 Easy
More PYQs from KCET
- Rate of physical adsorption increases withKCET 2009 Medium
- \(\log \left(\sin 1^{\circ}\right) \cdot \log \left(\sin 2^{\circ}\right) \cdot \log \left(\sin 3^{\circ}\right)\) \(\ldots \log \left(\sin 179^{\circ}\right)\)KCET 2013 Easy
- Imagine a new planet having the same density as that of the earth, but it is two times bigger than the earth in size. If the acceleration due to gravity on the surface of the earth is \(g\) and that on the surface of the new planet is \(g'\), thenKCET 2026 Medium
- A particle is in uniform circular motion. The equation of its trajectory is given by \((x-2)^2+y^2=25\), where x and y are in meter. The speed of the particle is \(2 \mathrm{~ms}^{-1}\), when the particle attains the lowest ' \(y\) ' co-ordinate, the acceleration of the particle is (in \(\mathrm{ms}^{-2}\) )KCET 2025 Medium
- A transition metal exists in its highest oxidation state. It is expected to behave asKCET 2022 Easy
- If \(A=\{1,2,3,4,5,6\}\), then the number of subsets of A which contain at least two elements isKCET 2020 Medium