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Chemistryalcohols-phenols-and-ethers2018easy
The major product of the following reaction is :
Chemistryalcohols-phenols-and-ethers2018medium
Phenol on treatment with CO2 in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with (CH3CO)2O in the presence of catalytic amount of H2SO4 produces:
Chemistrypractical-organic-chemistry2018easy
Which of the following compounds will be suitable for Kjeldahl’s method for nitrogen estimation?
Chemistrypractical-organic-chemistry2018easy
For standardizing NaOH solution, which of the following is used as a primary standard ?
Chemistrypractical-organic-chemistry2018medium
In a complexometric titration of metal ion with ligand M(Metal ion) + L(Ligand) C(Complex) end point is estimated spectrophoto - metrically (through light absorption). If 'M' and 'C' do not absorb light and only 'L' absorbs, then the titration plot between absorbed light (A) versus volume of ligand 'L' (V) would look like :
Chemistryp-block-elements2018easy
Among the oxides of nitrogen : N2O3, N2O4 and N2O5; the molecule(s) having nitrogen-nitrogen bond is / are :
Chemistryp-block-elements2018easy
The compound that does not produce nitrogen gas by the thermal decomposition is :
Chemistryp-block-elements2018easy
When metal ‘M’ is treated with NaOH, a white gelatinous precipitate ‘X’ is obtained, which is soluble in excess of NaOH. Compound ‘X’ when heated strongly gives an oxide which is used in chromatography as an adsorbent. The metal ‘M’ is
Chemistryp-block-elements2018easy
In graphite and diamond, the percentage of p-characters of the hybrid orbitals in hybridisation are respectively :
Chemistryp-block-elements2018easy
A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the aformentioned solution, a white precipitate is obtained which does not dissolve in dil. nitric acid. The anion is :
Chemistryp-block-elements2018easy
Xenon hexafluoride on partial hydrolysis produces compounds 'X' and 'Y' . Compounds 'X' and 'Y' and the oxidation state of Xe are respectively :
Chemistryp-block-elements2018easy
The number of P O bonds in P4O6 is :
Chemistryp-block-elements2018easy
In KO2, the nature of oxygen species and the oxydation state of oxygen atom are, respectively :
Chemistryp-block-elements2018easy
Lithium aluminium hydride reacts with silicon tetrachloride to form :
Chemistryp-block-elements2018medium
In XeO3F2, the number of bond pair(s), -bond(s) and lone pair(s) on Xe atom respectively are :
Chemistryp-block-elements2018easy
A group 13 element 'X' reacts with chlorine gas to produce a compound XCl3. XCl3 is electron deficient and easily reacts with NH3 to form Cl3X NH3 adduct ; however, XCl3 does not dimerize X is :
Chemistrychemistry-in-everyday-life2018easy
The correct match between items of List - I and List - II is : .tg {border-collapse:collapse;border-spacing:0;border-color:#999;width:100%} .tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#999;color:#444;background-color:#F7FDFA;} .tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#999;color:#fff;background-color:#26ADE4;} .tg .tg-wrg0{font-size:22px;text-align:center;vertical-align:top} .tg .tg-wv9z{font-size:22px;text-align:center} .tg .tg-de48{font-weight:bold;font-size:22px;text-align:center} .tg .tg-ujoh{font-weight:bold;font-size:22px;text-align:center;vertical-align:top} List - I List - II (A) Phenelzine (P) Pyrimidine (B) Chloroxylenol (Q) Furan (C) Uracil (R) Hydrazine (D) Ranitidine (S) Phenol
Chemistrybasics-of-organic-chemistry2018medium
On treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is :
Chemistrybasics-of-organic-chemistry2018easy
Two compounds I and II are eluted by column chromatography (adsorption of I > II). Which one of following is a correct statement ?
Chemistrybasics-of-organic-chemistry2018medium
The correct match between items of List-I and List-II is : .tg {border-collapse:collapse;border-spacing:0;} .tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;} .tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;} .tg .tg-13k7{font-size:20px;text-align:left} .tg .tg-p7ly{font-weight:bold;font-size:20px;text-align:center} List - I List - II (A) Coloured impurity (P) Steam distilation (B) Mixture of o-nitrophenol and p-nitrophenol (Q) Fractional distilation (C) Crude Naphtha (R) Charcoal treatment (d) Mixture of glycerol and sugars (S) Distillation under reduced pressure
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