5 moles of AB$$_2$$ weigh $$125 \times 10^{-3}$$ kg and 10 moles of A$$_2$$B$$_2$$ weigh $$300 \times 10^{-3}$$ kg. The molar mass of A (M$$_A$$) in kg mol$$^{-1}$$ are:
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5 moles of AB$$_2$$ weigh $$125 \times 10^{-3}$$ kg and 10 moles of A$$_2$$B$$_2$$ weigh $$300 \times 10^{-3}$$ kg. The molar mass of A (M$$_A$$) in kg mol$$^{-1}$$ are:
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The electrons are more likely to be found:
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The group number, number of valence electrons, and valency of an element with atomic number 15, respectively, are:
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The correct statement among the following is:
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An ideal gas is allowed to expand from 1 L to 10 L against a constant external pressure of 1 bar. The work done in kJ is:
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Enthalpy of sublimation of iodine is 24 cal g$$^{-1}$$ at 200°C. If specific heat of I$$_2$$(s) and I$$_2$$(vap) are 0.055 and 0.031 cal g$$^{-1}$$ K$$^{-1}$$ respectively, then enthalpy of sublimation of iodine at 250°C in cal g$$^{-1}$$ is:
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What is the molar solubility of Al(OH)$$_3$$ in 0.2 M NaOH solution? Given that, solubility product of Al(OH)$$_3$$ = $$2.4 \times 10^{-24}$$:
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An example of a disproportionation reaction is
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Given:
Co$$^{3+}$$ + e$$^-$$ $$\to$$ Co$$^{2+}$$; E° = +1.81V
Pb$$^{3+}$$ + 2e$$^-$$ $$\to$$ Pb$$^{2+}$$; E° = +1.67V
Ce$$^{4+}$$ + e$$^-$$ $$\to$$ Ce$$^{3+}$$; E° = +1.61V
Bi$$^{3+}$$ + 3e$$^-$$ $$\to$$ Bi; E° = +0.20V
Oxidizing power of the species will increase in the order:
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The correct sequence of thermal stability of the following carbonates is:
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The basic structural unit of feldspar, zeolites, mica, and asbestos is:
The increasing order of the pK$$_b$$ of the following compound is:
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The major product(s) obtained in the following reaction is/are:
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The major product of the following addition reaction is
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But-2-ene on reaction with alkaline KMnO$$_4$$ at elevated temperature followed by acidification will give:
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The correct set of species responsible for the photochemical smog is:
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An element has a face-centered cubic fcc structure with a cell edge of a. The distance between the centres of two nearest tetrahedral voids in the lattice is
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The mole fraction of a solvent in aqueous solution of a solute is 0.8. The molality (in mol kg$$^{-1}$$) of the aqueous solution is:
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In the following reaction; xA $$\to$$ yB
$$\log_{10}\left(-\frac{dA}{dt}\right) = \log_{10}\left(-\frac{dB}{dt}\right) + 0.3010$$
'A' and 'B' respectively can be:
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Peptization is a:
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The idea of froth flotation method came from a person X and this method is related to the process Y of ores. X and Y, respectively, are:
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The metal that gives hydrogen gas upon treatment with both the acid as well as the base is
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The complex ion that will lose its crystal field stabilization energy upon oxidation of metal to +3 state is:
(Phen = phenanthroline, ignore pairing energy)
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Complete removal of both the axial ligands (along the z-axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).
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The major products of the following reaction are:
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The major product of the following reaction:
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Which of the following is a thermosetting polymer?
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An organic compound 'A' is oxidized with Na$$_2$$O$$_2$$ followed by boiling with HNO$$_3$$. The resultant solution is then treated with ammonium molybdate to yield a yellow precipitate. Based on above observation, the element present in the given compound is:
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Glucose and Galactose are having identical configuration in all the positions except position.
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Which of the following statements is not true about RNA?
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