JEE Main 2018 (Online) 15th April Evening Slot | JEE Main Year Wise Previous Years Questions - ExamSIDE.Com

1

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

The total number of possible isomers for square-planar [Pt(Cl)(NO₂)(NO₃)(SCN)]^2- is :

A

8

B

12

C

16

D

24

2

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

Following four solutions are prepared by mixing different volumes of NaOH and HCl of different concentrations, pH of which one of them will be equal to 1 ?

A

100 mL $${M \over {10}}$$ HCl + 100 mL $${M \over {10}}$$ NaOH

B

75 mL $${M \over {5}}$$ HCl + 25 mL $${M \over {5}}$$ NaOH

C

60 mL $${M \over {10}}$$ HCl + 40 mL $${M \over {10}}$$ NaOH

D

55 mL $${M \over {10}}$$ HCl + 45 mL $${M \over {10}}$$ NaOH

3

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

When 2-butyne is treate with H₂/Lindlar's catalyst, compound X is produced as the major product and when treated with Na/liq. NH₃ it produces Y as the major product Which of the following statements is correct ?

A

X will have higher dipole moment and higher boiling point than Y.

B

Y will have higher dipole moment and higher boiling point than X.

C

X will have lower dipole moment and lower boiling point than Y.

D

Y will have higher dipole momet and lower boiling point than X.

4

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

The de-Broglie's wavelength of electron present in first Bohr orbit of 'H' atom is :

A

0.529 $$\mathop {\rm A}\limits^ \circ $$

B

2$$\pi $$ $$ \times $$ 0.529 $$\mathop {\rm A}\limits^ \circ $$

C

$${{0.529} \over {2\pi }}$$ $$\mathop {\rm A}\limits^ \circ $$

D

4 $$ \times $$ 0.529 $$\mathop {\rm A}\limits^ \circ $$

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