JEE Main 2023 · 8 Apr 2023 Shift 1

2IO₃⁻ + xI⁻ + 12H⁺ → 6I₂ + 6H₂O What is the value of x?

1. A2
2. B10
3. C6
4. D12

The reaction ½ H₂(g) + AgCl(s) ⇌ H⁺(aq) + Cl⁻(aq) + Ag(s) occurs in which of the given galvanic cell.

1. AAg | AgCl(s) | KCl(solⁿ) | AgNO₃ | Ag
2. BPt | H₂(g) | HCl(solⁿ) | AgNO₃(solⁿ) | Ag
3. CPt | H₂(g) | HCl(solⁿ) | AgCl(s) | Ag
4. DPt | H₂(g) | KCl(solⁿ) | AgCl(s) | Ag

The correct order of electronegativity for given elements is:

1. AC > P > At > Br
2. BBr > C > At > P
3. CP > Br > C > At
4. DBr > P > At > C

Which of the following metals can be extracted through alkali leaching technique?

1. AAu
2. BCu
3. CPb
4. DSn

The water gas on reacting with cobalt as a catalyst forms

1. AMethanal
2. BMethanol
3. CMethanoic acid
4. DEthanol

What is the purpose of adding gypsum to cement?

1. ATo give a hard mass
2. BTo facilitate the hydration of cement
3. CTo slow down the process of setting
4. DTo speed up the process of setting

Given below are two statements: Statement I: Lithium and Magnesium do not form superoxide Statement II: The ionic radius of Li⁺ is larger than ionic radius of Mg²⁺ In the light of the above statements, choose the most appropriate answer from the options given below:

1. ABoth Statement I and Statement II are correct
2. BBoth Statement I and Statement II are incorrect
3. CStatement I is correct but Statement II is incorrect
4. DStatement I is incorrect but Statement II is correct

Which halogen is known to cause the reaction given below: 2Cu²⁺ + 4X⁻ → Cu₂X₂(s) + X₂

1. AAll halogens
2. BOnly Iodine
3. COnly Bromine
4. DOnly Chlorine