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Match List I with List II List I Choose the correct answer from the options given below: 1) A–III, B–IV, C–II, D–I 2) A–IV, B–I, C–III, D–II 3) A–I, B–II, C–IV, D–III 4) A–II, B–III, C–I, D–IV II A. C₂H₄ I. 3 σ bonds, 2 π bonds B. C₂H₂ II. 3 σ bonds, one lone pair C. CH₄ III. 4 σ bonds D. NH₃ IV. 5 σ bonds, 1 π bond

By jschemistrytelugu@gmail.comPosted on Posted in TrendsNo Comments on Match List I with List II List I Choose the correct answer from the options given below: 1) A–III, B–IV, C–II, D–I 2) A–IV, B–I, C–III, D–II 3) A–I, B–II, C–IV, D–III 4) A–II, B–III, C–I, D–IV II A. C₂H₄ I. 3 σ bonds, 2 π bonds B. C₂H₂ II. 3 σ bonds, one lone pair C. CH₄ III. 4 σ bonds D. NH₃ IV. 5 σ bonds, 1 π bond

Option –  (2)  is the correct  answer.  Click the following YouTube link to get the video solution of the question: https://youtu.be/LQZPXPCiGes?si=1FP3pkBrfbpPJeNZ

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Three Faraday’s of electricity was passed through an aqueous solution of Magnesium bromide. The weight of Magnesium metal deposited at the cathode in grams :1).56 3)85 3)36 4) 168.

By jschemistrytelugu@gmail.comPosted on Posted in ELECTROCHEMISTRYNo Comments on Three Faraday’s of electricity was passed through an aqueous solution of Magnesium bromide. The weight of Magnesium metal deposited at the cathode in grams :1).56 3)85 3)36 4) 168.

Correct answer : (3) It can be solved as in the two following  ways..              According to the of Faraday’s first law, the amount of substance deposited at an electrode or gas evolved or solute desolute is directly proportional to the quantity of electricity is passing through it. Passing of […]

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Nitrolim is 1) CaC₂ + N₂ 2) CaCN₂ + Graphite 3)Ca NCN 4)Ca(CN)₂ + C

By jschemistrytelugu@gmail.comPosted on Posted in NITROGEN FAMILY (VII GROUP)No Comments on Nitrolim is 1) CaC₂ + N₂ 2) CaCN₂ + Graphite 3)Ca NCN 4)Ca(CN)₂ + C

Correct answer: (2)          CaCN₂ + Graphite. Here is some information regarding Nitrolim, Nitrolim (Is also known as nitrolime or lime nitrogen) is a nitrogenous fertilizer prepared by the cyanamide process. It is produced by passing nitrogen gas over heated calcium carbide (CaC₂) at high temperature (around 1000–1100°C). The reaction is: CaC₂ […]

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Which of the following is the correct order with respect to the property indicated? (1) Cl > F (Ionisation energy) (2) K2O > Na2O > Al2O3 (Basic nature) (3) K > Na > Al > Mg (Metallic character) (4) None of these

By jschemistrytelugu@gmail.comPosted on Posted in TrendsNo Comments on Which of the following is the correct order with respect to the property indicated? (1) Cl > F (Ionisation energy) (2) K2O > Na2O > Al2O3 (Basic nature) (3) K > Na > Al > Mg (Metallic character) (4) None of these

Answer (2) Sol.      F > Cl :    Fluorine has higher first ionisation energy than chlorine due to its smaller atomic size, leading to greater effective nuclear charge and tighter hold on the valence electron despite higher electron-electron repulsion in F. The given order Cl > F is incorrect. tThe actual order is […]

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Chemistry in everyday life very short answer questions

By jschemistrytelugu@gmail.comPosted on Posted in CHEMISTRY IN EVERYDAY LIFENo Comments on Chemistry in everyday life very short answer questions

Chemistry in everyday life                         Chemistry plays a significant role in our everyday life, from the food we eat and the medicines we use to the materials and products that surround us. Many concepts in chemistry, especially in topics like polymers, drugs, soaps, detergents, […]

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Question: Choose the correct option for free expansion of an ideal gas under adiabatic condition is A) 𝑞 = 0 ,    𝑊 = 0 ,    Δ 𝑇 = 0 B) 𝑞 = 0 ,    𝑊 = 0 ,    Δ 𝑇 ≠ 0 C) 𝑞 = 0 ,    𝑊 = 0 ,    Δ 𝑇 < 0 D) 𝑞 = 0 ,    𝑊 = 0 ,    Δ 𝑇 > 0.

By jschemistrytelugu@gmail.comPosted on Posted in THERMODYNAMICSNo Comments on Question: Choose the correct option for free expansion of an ideal gas under adiabatic condition is A) 𝑞 = 0 ,    𝑊 = 0 ,    Δ 𝑇 = 0 B) 𝑞 = 0 ,    𝑊 = 0 ,    Δ 𝑇 ≠ 0 C) 𝑞 = 0 ,    𝑊 = 0 ,    Δ 𝑇 < 0 D) 𝑞 = 0 ,    𝑊 = 0 ,    Δ 𝑇 > 0.

              Solution :-    Correct option : (1) In  a free expansion, P_ext = 0 — (1) then,W = PΔV= 0 (ΔV) W = 0 — (2) Since, it is an adiabatic process, Heat is constant – q = 0 — (3) acc. to first law of thermodynamics, ΔU […]

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Lanthanide contraction – causes and consequences

By jschemistrytelugu@gmail.comPosted on Posted in f block elementsNo Comments on Lanthanide contraction – causes and consequences

Lanthanide contraction : ” the steady decrease in the atomic and ionic radii of lanthanides with increasing the atomic number  is called Lanthanide contraction”. Atomic radii do show some irregularities   but ionic radii decrease steadily  from La to Lu. Causes : When we proceed from one element to the next element in Lanthanide series, the […]

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derivation for the determination of the rate constant and units for first order reaction.

By jschemistrytelugu@gmail.comPosted on Posted in CHEMICAL KINETICSNo Comments on derivation for the determination of the rate constant and units for first order reaction.

Rate constant for the first order reaction:  The reaction in which the rate of reaction depends only on the concentration of one reactant is called first order reaction. The rate constant for the first order reaction can be determined in the following way,                     A    […]

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