Chemistryalcohols-phenols-and-ethers2019easy
The major product of the following reaction
Chemistryalcohols-phenols-and-ethers2019easy
The major product 'X' formed in the following reaction is :
Chemistryalcohols-phenols-and-ethers2019medium
The increasing order of the pKa values of the following compounds is :
Chemistrypractical-organic-chemistry2019medium
The correct match between Item-I and Item-II is :
.tg {border-collapse:collapse;border-spacing:0;border:none;}
.tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:0px;overflow:hidden;word-break:normal;}
.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:0px;overflow:hidden;word-break:normal;}
.tg .tg-bzci{font-size:20px;text-align:center;vertical-align:top}
.tg .tg-p7ly{font-weight:bold;font-size:20px;text-align:center}
.tg .tg-fbrz{font-weight:bold;font-size:20px;text-align:center;vertical-align:top}
.tg .tg-4kyz{font-size:20px;text-align:center}
Item-I (drug)
Item-II (test)
A
Chloroxylenol
P
Carbylamine test
B
Norethindrone
Q
Sodium hydrogen carbonet test
C
Sulphapyridine
R
Ferric chloride test
D
Penicillin
S
Bayer's test
Chemistrypractical-organic-chemistry2019medium
The tests performed on compound X and their inferences are :
.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-wv9z{font-size:22px;text-align:center}
.tg .tg-de48{font-weight:bold;font-size:22px;text-align:center}
Test
Inference
(a)
2, 4 - DNP test
Coloured precipitate
(b)
Idoform test
Yellow precipitate
(c)
Azo-dye test
No dye formation
Compound 'X' is :
Chemistrypractical-organic-chemistry2019medium
The correct match between item 'I' and item 'II' is :
.tg {border-collapse:collapse;border-spacing:0;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: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-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}
Item 'I' (compound)
Item 'II'
(reagent)
(A)
Lysine
(P)
1-naphthol
(B)
Furfural
(Q)
ninhydrin
(C)
Benzylalcohol
(R)
KMnO4
(D)
Styrene
(S)
Ceric ammonium
nitrate
Chemistrypractical-organic-chemistry2019easy
An organic compound 'X' showing the following solubility profile is :
Chemistrypractical-organic-chemistry2019medium
An organic compound neither reacts with neutral ferric chloride solution nor with fehling solution.
it however, reacts with Grignard reagent and gives positive iodoform test. The compound is :
Chemistrypractical-organic-chemistry2019medium
The organic compound that gives following
qualitative analysis is :
.tg {border-collapse:collapse;border-spacing:0;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: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-s6z2{text-align:center}
.tg .tg-baqh{text-align:center;vertical-align:top}
Test
Inference
(a)
Dil. HCl
Insoluble
(b)
NaOH solution
soluble
(c)
Br2/water
Decolourization
Chemistrypractical-organic-chemistry2019easy
An organic compound 'A' is oxidizod with Na2O2 followed by boiling with HNO3. 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:
Chemistryredox-reactions2019easy
In the reaction of oxalate with permanganate in acidic medium, the number of electrons involved in producing one molecule of CO2 is :
Chemistryredox-reactions2019medium
50 mL of 0.5 M oxalic acid is needed to neutralize 25 mL of sodium hydroxide solution. The amount of NaOH in 50 mL of the given sodium hydroxide solution is -
Chemistryredox-reactions2019medium
The hardness of a water sample (in terms of equivalents of CaCO3) containing 10–3 M CaSO4 is (Molar mass of CaSO4 = 136 g mol–1)
Chemistryredox-reactions2019medium
In order to oxidise a mixture of one mole of each of FeC2O4, Fe2(C2O4)3, FeSO4 and Fe2(SO4)3 in
acidic medium, the number of moles of KMnO4 required is :
Chemistryredox-reactions2019easy
The correct order of the oxidation states of
nitrogen in NO, N2O, NO2 and N2O3 is :
Chemistryredox-reactions2019medium
An example of a disproportionation reaction is :
Chemistryp-block-elements2019easy
The number of pentagons in C60 and trigons (triangles) in white phosphorus, respectively, are :
Chemistryp-block-elements2019easy
The C–C bond length is maximum in :
Chemistryp-block-elements2019easy
The basic structural unit of feldspar, zeolites, mica, and asbestos is :
Chemistryp-block-elements2019easy
The noble gas that does not occur in the atmosphere is :