freejee866@gmail.com - NEET JEE RANKERS

Given below are two statements: Statement I: K > Mg > Al > B is the correct order in terms of metallic character. Statement II: Atomic radius is always greater than the ionic radius for any element. In the light of the above statements, choose the correct answer from the options given below.

K > Mg > Al > B metallic character and atomic radius vs ionic radius assertion reason question Q. Given […]

Given below are two statements: Statement I: The number of paramagnetic species among [CoF6]3−, [TiF6]3−, V2O5 and [Fe(CN)6]3− is 3. Statement II: K4[Fe(CN)6] < K3[Fe(CN)6] < [Fe(H2O)6]Cl3 is the correct order in terms of number of unpaired electron(s) present in the complexes. In the light of the above statements, choose the correct answer from the options given below.

Given below are two statements about paramagnetism and unpaired electrons in coordination compounds Q. Given below are two statements: Statement

Uncategorized

Consider three metal chlorides x, y and z, where x is water soluble at room temperature, y is sparingly soluble in water at room temperature and z is soluble in hot water. x, y and z are respectively

Consider three metal chlorides x, y and z, where x is water soluble at room temperature, y is sparingly soluble

Uncategorized

W g of a non-volatile electrolyte solid solute of molar mass M g mol⁻¹ when dissolved in 100 mL water, decreases vapour pressure of water from 640 mm Hg to 600 mm Hg. If aqueous solution of the electrolyte boils at 375 K and Kb for water is 0.52 K kg mol⁻¹, then the mole fraction of the electrolyte solute (x₂) in the solution can be expressed as (Given : density of water = 1 g/mL and boiling point of water = 373 K)

W g of a non-volatile electrolyte solid solute of molar mass M g mol⁻¹ when dissolved in 100 mL water,

Uncategorized

Match the List-I with List-II List-I (Chloro derivative) A. Vinyl Chloride B. Benzyl Chloride C. Alkyl Chloride D. Allyl Chloride List-II (Example) I. CH₂ = CH – CH₂Cl II. CH₃ – CH(Cl)CH₃ III. CH₂ = CHCl IV. C₆H₅ – CH(Cl) – CH₃ Choose the correct answer from the options given below:

Match the List-I with List-II chloro derivative examples Q. Match the List-I with List-II List-IChloro derivative List-IIExample A. Vinyl Chloride

Uncategorized

Consider a mixture ‘ X ‘ which is made by dissolving 0.4 mol of [Co(NH₃)₅SO₄]Br and 0.4 mol of [Co(NH₃)₅Br]SO₄ in water to make 4 L of solution. When 2 L of mixture ‘ X ‘ is allowed to react with excess of AgNO₃, it forms precipitate ‘ Y ‘. The rest 2 L of mixture ‘ X ‘ reacts with excess BaCl₂ to form precipitate ‘ Z ‘. Which of the following statements is CORRECT?

Consider a mixture X made by dissolving cobalt ammine complexes reacting with AgNO3 and BaCl2 find correct statement Q. Consider

Uncategorized

A solution is prepared by dissolving 0.3 g of a non-volatile non-electrolyte solute ‘A’ of molar mass 60 g mol⁻¹ and 0.9 g of a non-volatile non-electrolyte solute ‘B’ of molar mass 180 g mol⁻¹ in 100 mL H₂O at 27°C. Osmotic pressure of the solution will be [Given: R = 0.082 L atm K⁻¹ mol⁻¹]

A solution is prepared by dissolving non volatile non electrolytes A and B in water at 27°C find osmotic pressure

Uncategorized

A hydroxy compound (X) with molar mass 122 g mol⁻¹ is acetylated with acetic anhydride, using a large excess of the reagent ensuring complete acetylation of all hydroxyl groups. The product obtained has a molar mass of 290 g mol⁻¹. The number of hydroxyl groups present in compound (X) is:

A hydroxy compound with molar mass 122 g mol−1 is acetylated with acetic anhydride and product has molar mass 290

Uncategorized

Given below are two statements: Statement I: Hybridisation, shape and spin only magnetic moment of K₃[Co(CO₃)₃] is sp³d², octahedral and 4.9 BM respectively. Statement II: Geometry, hybridisation and spin only magnetic moment values (BM) of the ions [Ni(CN)₄]²⁻, [MnBr₄]²⁻ and [CoF₆]³⁻ respectively are square planar, tetrahedral, octahedral; dsp², sp³, sp³d² and 0, 5.9, 4.9. In the light of the above statements, choose the correct answer from the options given below.

Hybridisation shape and spin only magnetic moment statements for coordination compounds Q. Given below are two statements: Statement I: Hybridisation,

Uncategorized

A short bar magnet placed with its axis at 30° with an external field of 800 Gauss, experiences a torque of 0.016 N·m. The work done in moving it from most stable to most unstable position is α × 10⁻³ J. The value of α is ____ .

A short bar magnet placed with its axis at 30° with an external field of 800 Gauss experiences a torque