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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2021 -CHEMISTRY (CATEGORY -I)
- A saturated solution of BaSO(4) at 25^(@)C is 4xx10^(-5)M. The solubi...
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- A solution is made by a concentrated solution of Co(NO(3))(2), with a ...
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- Extraction of a metal (M) from its sulfide ore (M(2)S) involves the fo...
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- The white precipitate (Y), obtained on passing colourless and odourles...
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- Which structure has delocalised pi-electrons ?
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- The H(3)O^(+) ion has the following shape
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- For the reaction ""^(14)N(alpha,p)^(17)O,1.16MeV (Mass equivalent = 0....
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- A solution of NaNO(3), when treated with a mixture of Zn dust and 'A' ...
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- Indicate the number of unpaired electrons in K(3)[Fe(CN)(6)] and K(4)[...
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- Which of the following compounds have magnetic moment identical with [...
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- Among the following chlorides the compounds which will be hydrolysed m...
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- The products ul(X) and ul(Y) which are formed in the following sequenc...
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- The atomic masses of helium and neon are 4.0 and 20.0 amu respectively...
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- The mole fraction of a solute in a binary solution is 0.1. At 298 K, m...
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- 5.75 mg of sodium vapour is converted to sodium ion. If the ionisation...
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- The product(s) in the following sequence of reactions will be Me-C-=...
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- The compounds X and Y are respectively
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- Aqueous solution of HNO(3), KOH, CH(3)COOH and CH(3)COONa of identica...
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- Reaction of silver nitrate solution with phosphorous acid produces:
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- N(2)H(4) and H(2)O(2) show similarity in
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