JEE MAIN - Chemistry (2019 - 8th April Morning Slot)
1
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 :
Answer
(D)
2
The following ligand is :
Answer
(C)
tetradentate
3
Maltose on treatment with dilute HCI gives :
Answer
(C)
D-Glucose
4
An organic compound 'X' showing the following solubility profile is :
Answer
(D)
m-Cresol
5
Given that $${E^\Theta }_{{O_2}/{H_2}O} = 1.23\,V$$ ;
The size of the iso-electronic species Cl–, Ar and Ca2+ is affected by :
Answer
(C)
nuclear charge
7
The IUPAC name of the following compound is :
Answer
(A)
3-Hydroxy-4-methylpentanoic acid
8
In the following compounds, the decreasing order of basic strength will be :
Answer
(C)
(C2H5)2NH > C2H5NH2 > NH3
9
The major product of the following reaction is :
Answer
(D)
10
Which one of the following equations does not correctly represent the first law of thermodynamics
for the given processes involving an ideal gas? (Assume non-expansion work is zero)
Answer
(A)
Adiabatic process : $$\Delta $$U= – w
11
Which of the following amines can be prepared by Gabriel phthalimide reaction ?
Answer
(B)
n-butylamine
12
The quantum number of four electrons are given below :
n = 4, l = 2, ml =–2, ms = –1/2
n = 3, l = 2, ml = 1, ms = +1/2
n = 4, l = 1, ml = 0, ms = +1/2
n = 3, l = 1, ml = 1, ms = –1/2
The correct order of their increasing enegies will be :
Answer
(A)
IV < II < III < I
13
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 :
Answer
(C)
2
14
The lathanide ion that would show colour is :
Answer
(A)
Sm3+
15
The correct order of the spin-only magnetic moment of metal ions in the following low-spin
complexes, [V(CN)6]4–,[Fe(CN)6]4–, [Ru(NH3)6]3+, and [Cr(NH3)6]2+ , is :
Answer
(B)
V2+ > Cr2+ > Ru3+ > Fe2+
16
Coupling of benzene diazonium chloride with 1 - naphthol in alkaline medium will give :
Answer
(C)
17
The major product of the following reaction is :
Answer
(D)
18
The major product of the following reaction is :
Answer
(B)
19
If solublity product of Zr3(PO4)4 is denoted by Ksp and its molar solubility is denoted by S, then
which of the following relation between S and Ksp is correct ?
For the reaction 2A + B $$ \to $$ C, the values of initial rate at diffrent reactant concentrations are
given in the table below. The rate law for the reaction is :
[A] (mol L-1)
[B] (mol L-1)
Initial Rate (mol L-1s-1)
0.05
0.05
0.045
0.10
0.05
0.090
0.20
0.10
0.72
Answer
(A)
Rate = k[A][B]2
21
The vapour pressures of pure liquids A and B are 400 and 600 mmHg, respectively at 298 K on
mixing the two liquids, the sum of their initial volume is equal ot the volume of the final mixture.
The mole fraction of liquid B is 0.5 in the mixture, The vapour pressure of the final solution, the
mole fractions of components A and B in vapour phase, respectively are :
Answer
(B)
500 mmHg, 0.4, 0.6
22
For silver, Cp(J K–1 mol–1) = 23 +0.01 T. If the temperature (T) of 3 moles of silver is raised from 300
K to 1000 K at 1 atm pressure, the value of $$\Delta H$$ will be close to :
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