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What is the density of the solution of sulphuric acid used as an electrolyte in a lead accumulator?
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What is the geometry of a water molecule?
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The number of bonding pairs and lone pairs of electrons present in the central atom of ammonia molecular are respectively.
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A gas is heated from 273 K to 373 K at 1 atm pressure. If the initial volume of the gas is 10 L, its final volume would be ______.
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Solubility product of AgBr is 4.9 × 10-13. What is its solubility?
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What is the number of lone pair of electrons in IF7?
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Identify compound having square pyramidal-shape:from following.
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Gas equation, pV = nRT is obeyed by a gas in ______.
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The solubility product (Ksp) of solid barium sulphate at 298 K is 1.1 × 10-10. The molar solubility, S of \[\ce{Ba^{2+} and [SO^{2-}_4]}\] are ______.
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Which of the following can reduce?
\[\ce{RCOOH -> RCH2OH}\]
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Choose the correct option.
Ethers are kept in air tight brown bottles because ______________.
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Mole is the SI unit of ____________.
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Isothermally and reversibly one mole of neon expands from 2 m3 to 20 m3 and produces 831.4 J of work. The temperature at which expansion takes place is ____________.
(R = 8.314 J K-1 mol-1)
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Select the INCORRECT statement.
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The dissociation constant of a weak base (BOH) is 1.8 × 10−5. Its degree of dissociation in 0.001 M solution is ____________.
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At T (K), the molar ionic conductivities of NH; and OH− at infinite dilution are 72 and 198 S cm2 mol−1 respectively. The molar conductivity of 0.01 M NH4OH solution at the same temperature is found to be 9 S cm2 mol−1. The percentage dissociation of NH4OH at this concentration is ____________.
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Identify the INCORRECT match.
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When 2 moles of C2H6(g) are completely burnt, 3129 kJ of heat is liberated. If ∆Hf for CO2(g) and H2O(l) are −395 and −286 kJ per mole respectively, the heat combustion of C2H6(g) is ____________.
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A compound that has a high negative heat of formation is normally ____________.
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According to Bohr's theory, an electron can move only in those orbits for which its angular momentum is integral multiple of ____________.
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