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For the reaction: C₂H₆→ C₂H₄ + H₂ : The reaction enthalpy

For the reaction: C2H6→ C2H4 + H2 : The reaction enthalpy ΔrH = __________ kJ mol–1. (Round off to the Nearest Integer). [Given:... View Article

For the reaction: 2Fe³⁺ (aq) + 2I^– (aq) → 2Fe²⁺ (aq) + I₂(s)

For the reaction: 2Fe3+ (aq) + 2I– (aq) → 2Fe2+ (aq) + I2(s) The magnitude of the standard molar free energy change, ΔrGom =... View Article

2NO (g) + Cl₂ (g) → 2 NOCl (s): This reaction was studied at – 10⁰C and the following data was obtained.

2NO (g) + Cl2 (g) → 2 NOCl (s): This reaction was studied at – 100C and the following data was obtained. [NO]0 and [Cl2]0 are the... View Article

A reaction of 0.1 mole of Benzyl amine with bromomethane gave 23 g of Benzyl trimethyl ammonium bromide.

A reaction of 0.1 mole of Benzyl amine with bromomethane gave 23 g of Benzyl trimethyl ammonium bromide. The number of moles of bromomethane... View Article

_____ grams of 3-Hydroxy propanal (MW = 74) must be dehydrated to produce 7.8 g of acrolein (MW = 56) (C₃H₄O) if the percentage yield is 64. (Round off to the Nearest Integer).

[Given: Atomic masses: C : 12.0 u, H : 1.0 u, O : 16.0 u] Answer: 16 7.8/ 56 = 0.14 mol % yield =... View Article

AX is a covalent diatomic molecule where A and X are second-row elements of the periodic table.

AX is a covalent diatomic molecule where A and X are second-row elements of the periodic table. Based on Molecular orbital theory, the bond order... View Article

The total number of unpaired electrons present in the complex K₃[Cr(oxalate)₃] is

Answer: (3) K3[Cr(ox)3] Chromium & in + 3 oxidation state Cr → 3d5 4s1 Cr3+ → 3d3 3 unpaired electron the hybridization of... View Article

2 molal solution of a weak acid HA has a freezing point of 3.885 ^oC.

2 molal solution of a weak acid HA has a freezing point of 3.885 oC. The degree of dissociation of this acid is _________ × 10–3.... View Article

Match List-I with List-II:

Match List-I with List-II: List-I (Process) List-II (Catalyst) (a) Deacon’s process (i) ZSM-5 (b)... View Article

A non-reducing sugar ”A” hydrolyses to give two reducing monosaccharides. Sugar A is

a. Glucose b. Fructose c. Sucrose d. Galactose Answer: (c) C12H22O11 + H2O → C6H12O6 + C6H12O6 Sucrose D-glucose D-fructose... View Article

Reaction of Grignard reagent, C₂H₅MgBr with C₈H₈O followed by hydrolysis

Reaction of Grignard reagent, C2H5MgBr with C8H8O followed by hydrolysis gives compound “A” which reacts instantly with Lucas reagent... View Article

Considering the below reaction, X and Y respectively are

Solution: Option d is the answer.... View Article

Considering the below chemical reaction, identity the product “X”

Considering the below chemical reaction, identity the product “X”: Solution: hence option c is the answer... View Article

The chemical is added to reduce the melting point of the reaction mixture during the extraction of aluminium is:

a. Cryolite b. Calamine c. Kaolite d. Bauxite Answer: (a) For reducing the melting point of Alumina, Cryolite i.e. Na3AlF6 is added.... View Article

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: During the boiling of water... View Article

Consider the above chemical reaction and identity product “A”

Consider the above chemical reaction and identity product “A”: Solution: Option c is the answer.... View Article

A certain orbital has no angular nodes and two radial nodes. The orbital is:

a. 2p b. 3p c. 2s d. 3s Answer: (d) No angular nodes ⇒ ℓ = 0 Radial nodes = n – ℓ –1 = n – 0 – 1 = 2 n = 3... View Article

The number of ionisable hydrogens present in the product obtained from a reaction of phosphorus trichloride and phosphonic acid is

a. 3 b. 1 c. 0 d. 2 Answer: (d) PCl3 + H3PO3 +H2O → H4P2O5 + HCl pyrophosphorous acid The structure of pyrophosphorous acid... View Article

Match List-I with List-II:

Match List-I with List-II: List-I List-II (a) Chlorophyll (i) Ruthenium (b) Vitamin – B12 (ii)... View Article

The correct structures of trans-[NiBr₂(PPh₃)₂] and meridional-[Co(NH₃)₃(NO₂)₃] respectively are:

The correct structures of trans-[NiBr2(PPh3)2] and meridional-[Co(NH3)3(NO2)3] respectively are: Solution: Option b is the answer.... View Article

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