1
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following statements is correct for electrolysis of brine solution?

A
$$\mathrm{O}_{2}$$ is formed at cathode
B
$$\mathrm{H}_{2}$$ is formed at anode
C
$$\mathrm{Cl}_{2}$$ is formed at cathode
D
$$\mathrm{OH}^{-}$$ is formed at cathode
2
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Cobalt chloride when dissolved in water forms pink colored complex $$\underline{\mathrm{X}}$$ which has octahedral geometry. This solution on treating with conc $$\mathrm{HCl}$$ forms deep blue complex, $$\underline{\mathrm{Y}}$$ which has a $$\underline{\mathrm{Z}}$$ geometry. $$\mathrm{X}, \mathrm{Y}$$ and $$\mathrm{Z}$$, respectively, are

A
$$\mathrm{X}=\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}, \mathrm{Y}=\left[\mathrm{CoCl}_{4}\right]^{2-}, \mathrm{Z}=$$ Tetrahedral
B
$$\mathrm{X}=\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}, \mathrm{Y}=\left[\mathrm{CoCl}_{6}\right]^{3-}, \mathrm{Z}=$$ Octahedral
C
$$\mathrm{X}=\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Cl}_{2}\right]^{+}, \mathrm{Y}=\left[\mathrm{CoCl}_{4}\right]^{2-}, \mathrm{Z}=$$ Tetrahedral
D
$$\mathrm{X}=\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}, \mathrm{Y}=\left[\mathrm{CoCl}_{6}\right]^{3-}, \mathrm{Z}=$$ Octahedral
3
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

An organic compound 'A' with emperical formula $$\mathrm{C}_{6} \mathrm{H}_{6} \mathrm{O}$$ gives sooty flame on burning. Its reaction with bromine solution in low polarity solvent results in high yield of B. B is

A
JEE Main 2023 (Online) 31st January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 50 English Option 1
B
JEE Main 2023 (Online) 31st January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 50 English Option 2
C
JEE Main 2023 (Online) 31st January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 50 English Option 3
D
JEE Main 2023 (Online) 31st January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 50 English Option 4
4
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I List II
A. $$\mathrm{XeF_4}$$ I. See-saw
B. $$\mathrm{SF_4}$$ II. Square-planar
C. $$\mathrm{NH_{4}^{+}}$$ III. Bent T-shaped
D. $$\mathrm{BrF_3}$$ IV. Tetrahedral

Choose the correct answer from the options given below :

A
A - II, B - I, C - III, D - IV
B
A - II, B - I, C - IV, D - III
C
A - IV, B - I, C - II, D - III
D
A - IV, B - III, C - II, D - I
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