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CHHAYA PUBLICATION-PREVIOUS YEAR QUESTION PAPER 2019-WBJEE 2019
- In the equilibrium H(2) + I(2) hArr 2HI , if at a given temperature th...
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- Which one of the following electronic arrangement is absurd ?
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- The quantity h v// K(B) corresponds to -
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- In the crystalline solid MSO(4) , n H(2)O of molar mass 250 g * mol...
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- At S.T.P. the volume of 7.5 g of a gas is 5.6 L . The gas is -
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- The second Ionisation Energy of the following elements follows the ord...
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- The melting points of (i) BeCl(2) (ii) CaCl(2) and (iii) HgCl(2) follo...
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- Which of these species will have non -zero magnetic moment ?
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- The first electron affinity of C , N and O will be of the order -
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- The H-N-H angle in ammonia is 107.6^(@) , while the H-P-H angle in pho...
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- The conformations of n-butane , commonly known as eclipsed , gauche an...
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- The correct order of the addition reaction rates of halogen acids with...
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- The indicated atom is not a nucleophilic site in -
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- Which of the following mixtures will have the lowest pH at 298 K ?
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- For the equilibrium H(2) O(l) hArr H(2) O (v) , which of the followin...
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- For a van der Waal's gas , the term ((ab)/(sqrt2)) represents some -
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- At constant pressure , the heat of formation of a compound is not depe...
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- Which of the following chemicals may be used to identify three unlabel...
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