If x + y = 3, x^2 + y^2 = 5 then xy is
anjurajput2005
Asked:
September 2023
in the circuit shown in the figure , the maginitude of potential difference between point A and E is
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anjurajput2005
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December 2022
A solid compound (XY) has NaCl type structure. If the radius of cation is 120 pm, the edge length of unit cell of XY will be
anjurajput2005
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December 2022
Consider the given half cell standard reduction potentials The strongest oxidising and reducing agents respectively are Au3+ and Ni I2 and H2 Ni2+ and Au H+ and Ni
anjurajput2005
Asked:
December 2022
If in a mixed oxide of elements A and B, the oxide ions are arranged in CCP lattice and cations (A2+) occupy 12.5% of tetrahedral voids and cation (B3+) occupy 50% octahedral voids, the formula of the oxide is A2BO4 AB2O4 ABO2 AB3O2
anjurajput2005
Asked:
December 2022
A solid compound (XY) has NaCl type structure. If the radius of cation is 120 pm, the edge length of unit cell of XY will be
anjurajput2005
Asked:
December 2022
The addition of a catalyst during a chemical reaction do not alter which of the following quantities? Energy of reactant Energy of product Enthalpy of the reaction All of these
anjurajput2005
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December 2022
Which of the following aqueous solution is the best conductor of electric current? 0.1 M NH4OH 0.1 M NaOH 0.2 M NH2CONH2 0.1 M HCN
anjurajput2005
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December 2022
500 g of 30% (w/w) solution is mixed with 400 g of 25% (w/w) solution. Mass percentage of the resulting solution is image.png image.png image.png image.png
anjurajput2005
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December 2022
A particle of mass m is in equilibrium in a vertical electric field of magnitude E directed upward. The charge on particle is image.png mgE image.png 2mgE
anjurajput2005
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December 2022
The weight of copper (atomic weight = 63.5 u) displaced as Cu2+ ions by a quantity of electricity which displaces 11200 ml of H2 at STP will be 39.43 g 28.28 g 31.75 g 42.31 g
anjurajput2005
Asked:
December 2022
elect the incorrect statement among the following. Camphor is often used in molecular mass determination because it has very high cryoscopic constant. Osmotic pressure method is one of the best method for the determination of molecular weight of proteins. Ethylene glycol can be used as antifreeze in automobile radiators.
anjurajput2005
Asked:
December 2022
Select the incorrect statement among the following. Schottky defect is favoured in those ionic compounds in which sizes of cation and anions are comparable. Metallic or insulating properties of TiO3 depends on temperature. CrO2 is a ferromagnetic substance Fe3O4 is strongly attracted by magnetic field.