1
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Wilkinson catalyst is : (Et = C2H5)
A
[(Ph3P)3 RhCl]
B
[(Et3P)3RhCl]
C
[(Et3P)3IrCl]
D
[(Ph3P)3IrCl]
2
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If dichloromethane (DCM) and water (H2O) are used for differential extraction, which one of the following statements is correct ?
A
DCM and H2O would stay as upper and lower layer respectively in the separating funnel (S.F.)
B
DCM and H2O will make turbid/colloidal mixture
C
DCM and H2O would stay as lower and upper layer respectively in the separating funnel(S.F).
D
DCM and H2O will be miscible clearly
3
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The values of Kp/Kc for the following reactions at 300 K are, respectively : (At 300 K, RT = 24.62 dm3 atm mol–1)

N2(g) + O2(g)  $$\rightleftharpoons$$ 2 NO(g)

N2O4(g)  $$\rightleftharpoons$$   2 NO(g)

N2(g) + 3H2(g) $$\rightleftharpoons$$ 2 NH3(g)
A
24.62 dm3 atm mol–1, 606.0 dm6 atm2 mol–2 1.65 $$ \times $$ 10–3 dm–6 atm–2 mol2
B
1,4.1 $$ \times $$ 10–2 dm–3 atm–1 mol, 606 dm6 atm2 mol–2
C
1,24.62 dm3 atm mol–1 , 1.65 $$ \times $$ 10–3 dm–6 atm –2 mol2
D
1, 24.62 dm3 atm mol–1, 606.0 dm6 atm2 mol–2
4
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The electronegativity of aluminium is similar to :
A
Beryllium
B
Carbon
C
Boron
D
Lithium
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