Keeping the significant figures in view, the sum of the physical quantities 52.01 m, 153.2 m and 0.123 m is :
Keeping the significant figures in view, the sum of the physical quantities 52.01 m, 153.2 m and 0.123 m is […]
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A spherical body of radius r and density σ falls freely through a viscous liquid having density ρ and viscosity η and attains a terminal velocity v₀. Estimated maximum error in the quantity η is : (Ignore errors associated with σ, ρ and g, gravitational acceleration
A spherical body of radius r and density σ falls freely through a viscous liquid having density ρ and viscosity
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The temperature at which the rate constants of the given below two gaseous reactions become equal is ____ K. (Nearest integer) X → Y, k₁ = 10⁶ e^(−30000/T) P → Q, k₂ = 10⁴ e^(−24000/T) Given : ln 10 = 2.303
The temperature at which the rate constants of the given below two gaseous reactions become equal is ____ K. Q.
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Dissociation of a gas A₂ takes place according to the following chemical reaction. At equilibrium, the total pressure is 1 bar at 300 K. A₂(g) ⇌ 2A(g) The standard Gibbs energy of formation of the involved substances has been provided below: Substance ΔG°f / kJ mol⁻¹ A₂ −100.00 A −50.832 The degree of dissociation of A₂(g) is given by (x × 10⁻²)¹ᐟ² where x = ____ . (Nearest integer) [ Given : R = 8 J mol⁻¹ K⁻¹ , log 2 = 0.3010 ] Assume degree of dissociation is not negligible.
Dissociation of a gas A₂ takes place according to the following chemical reaction. At equilibrium, the total pressure is 1
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The cycloalkene (X) on bromination consumes one mole of bromine per mole of (X) and gives the product (Y) in which C : Br ratio is 3 : 1. The percentage of bromine in the product (Y) is ____ %. (Nearest integer) (Given : molar mass in gmol−1 H : 1, C : 12, O : 16, Br : 80)
The cycloalkene (X) on bromination consumes one mole of bromine per mole of (X) and gives the product (Y) in
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Sodium fusion extract of an organic compound (Y) with CHCl3 and chlorine water gives violet color to the CHCl3 layer. 0.15 g of (Y) gave 0.12 g of the silver halide precipitate in Carius method. Percentage of halogen in the compound (Y) is ____ . (Nearest integer) (Given : molar mass gmol−1 C : 12, H : 1, Cl : 35.5, Br : 80, I : 127)
Percentage of Halogen using Carius Method | JEE Main Chemistry Q. Sodium fusion extract of an organic compound (Y) with
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Two p-block elements X and Y form fluorides of the type EF3. The fluoride compound XF3 is a Lewis acid and YF3 is a Lewis base. The hybridizations of the central atoms of XF3 and YF3 respectively are
Hybridization of XF3 and YF3 based on Lewis acid base nature Q. Two p-block elements X and Y form fluorides
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A first row transition metal (M) does not liberate H2 gas from dilute HCl. 1 mol of aqueous solution of MSO4 is treated with excess of aqueous KCN and then H2S(g) is passed through the solution. The amount of MS (metal sulphide) formed from the above reaction is ______ mol.
Amount of metal sulphide formed after KCN and H2S treatment Q. A first row transition metal (M) does not liberate
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Consider the transition metal ions Mn³⁺, Cr³⁺, Fe³⁺ and Co³⁺ and all form low spin octahedral complexes. The correct decreasing order of unpaired electrons in their respective d-orbitals of the complexes is
Decreasing order of unpaired electrons in low spin octahedral complexes Q. Consider the transition metal ions Mn3+, Cr3+, Fe3+ and
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The correct order of reactivity of CH3Br in methanol with the following nucleophiles is F−, I−, C2H5O− and C6H5O−
The correct order of reactivity of CH3Br in methanol with nucleophiles Q. The correct order of reactivity of CH3Br in