Identify the correct statements about group 14 elements:
I. Sn in +2 state is a reducing agent and Pb in +4 state is a strong oxidising agent.
II. Thermodynamically most stable allotrope of carbon is diamond.
III. SiCl\(_4\) on hydrolysis gives silicic acid.
IV. Sn has a higher melting point than Pb.
Identify the correct statements about group 14 elements:
I. Sn in +2 state is a reducing agent and Pb in +4 state is a strong oxidising agent.
II. Thermodynamically most stable allotrope of carbon is diamond.
III. SiCl\(_4\) on hydrolysis gives silicic acid.
IV. Sn has a higher melting point than Pb.
Show Hint
- I, III only
- II, III only
- I, IV only
- II, IV only
The Correct Option is A
Approach Solution - 1
Statement I: Correct. \( \text{Sn}^{2+} \) acts as a reducing agent, whereas \( \text{Pb}^{4+} \) is a strong oxidizing agent due to the inert pair effect.
Statement II: Incorrect. The thermodynamically most stable allotrope of carbon is graphite, not diamond.
Statement III: Correct. \( \text{SiCl}_4 \) reacts with water to form silicic acid \( \text{H}_4\text{SiO}_4 \).
Statement IV: Incorrect. Lead (Pb) has a higher melting point than tin (Sn), making this statement false.
Thus, the correct answer is I, III only.
Approach Solution -2
To solve the problem, we need to identify the correct statements about Group 14 elements.
1. Understanding the Statements:
Let's go through the statements one by one:
Statement I: "Sn in +2 state is a reducing agent and Pb in +4 state is a strong oxidising agent." This statement is correct because tin (Sn) in the +2 oxidation state is a reducing agent, and lead (Pb) in the +4 oxidation state is a strong oxidizing agent.
Statement II: "Thermodynamically most stable allotrope of carbon is diamond." This statement is incorrect. The most thermodynamically stable allotrope of carbon at room temperature is graphite, not diamond.
Statement III: "SiCl₄ on hydrolysis gives silicic acid." This statement is correct. Silicon tetrachloride (SiCl₄) reacts with water (hydrolyzes) to form silicic acid.
Statement IV: "Sn has higher melting point than Pb." This statement is incorrect. Lead (Pb) has a higher melting point than tin (Sn). The melting point of Sn is 231.9°C, while Pb has a melting point of 327.5°C.
Final Answer:
The correct answer is Option A: I, III only.
Top Questions on Stereoisomers
- In 2-chloro-3,4-dimethylhexane, how many chiral C atoms are present?
- MHT CET - 2025
- Chemistry
- Stereoisomers
- What volume of \( 0.5 \, \text{M} \, \text{NaOH} \) is required to neutralize \( 50 \, \text{mL} \) of \( 1 \, \text{M} \, \text{HCl} \)?
- VITEEE - 2025
- Chemistry
- Stereoisomers
- How many moles are present in \(44\, \text{g}\) of \(CO_2\)?
(Molar mass of \(CO_2 = 44\, \text{g/mol}\))- VITEEE - 2025
- Chemistry
- Stereoisomers
- \( x \) g of an organic compound was analysed by Kjeldahl’s method for the estimation of nitrogen. The ammonia gas evolved from the compound was passed into 100 mL of 0.2 M H\(_2\)SO\(_4\). The excess of acid required 40 mL of 0.5 M NaOH solution for complete neutralisation. What is \( x \) when the percentage of nitrogen in it is 46%?
- AP EAMCET - 2024
- Chemistry
- Stereoisomers
Find the least horizontal force \( P \) to start motion of any part of the system of three blocks resting upon one another as shown in the figure. The weights of blocks are \( A = 300 \, {N}, B = 100 \, {N}, C = 200 \, {N} \). The coefficient of friction between \( A \) and \( C \) is 0.3, between \( B \) and \( C \) is 0.2 and between \( C \) and the ground is 0.1.
- AP EAMCET - 2024
- Physics
- Stereoisomers
Questions Asked in AP EAMCET exam
- In a meter bridge experiment, a resistance of 9 Ω is connected in the left gap and an unknown resistance greater than 9 Ω is connected in the right gap. If the resistance in the gaps are interchanged, the balancing point shifts by 10 cm. The unknown resistance is:
- AP EAMCET - 2024
- Wheatstone Bridge
- The angle made by the resultant vector of two vectors \( 2\hat{i} + 3\hat{j} + 4\hat{k} \) and \( 2\hat{i} - 7\hat{j} - 4\hat{k} \) with the x-axis is:
- If the longest wavelength of the spectral line of the Paschen series of \( \text{Li}^{2+} \) ion spectrum is \( x \) Å, then the longest wavelength (in Å) of the Lyman series of the hydrogen spectrum is:
- AP EAMCET - 2024
- Atomic Spectra
- Let \( A(2, 3), B(1, -1) \) be two points. If \( P \) is a variable point such that \( \angle APB = 90^\circ \), then the locus of \( P \) is
- AP EAMCET - 2024
- solution of system of linear inequalities in two variables
- The charge \( q \) (in coulombs) passing through a \( 10 \Omega \) resistor as a function of time \( t \) (in seconds) is given by: \[ q = 3t^2 - 2t + 6 \] The potential difference across the ends of the resistor at time \( t = 5 \) s is:
- AP EAMCET - 2024
- coulombs law