JEE Main 2016 (Online) 10th April Morning Slot | JEE Main Year Wise Previous Years Questions - ExamSIDE.Com

1

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

The correct statement about the synthesis of erythritol (C(CH₂OH)4) used in the preparation of PETN is :

A

The synthesis requires four aldol condensations between methanol and ethanol.

B

The synthesis requires two aldol condensations and two Cannizzaro reactions.

C

The synthesis requires three aldol condensations and one Cannizzaro reaction.

D

Alpha hydrogens of ethanol and methanol are involved in this reaction.

2

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

The following statements concern elements in the periodic table. Which of the following is true ?

A

All the elements in Group 17 are gases.

B

The Group 13 elements are all metals.

C

Elements of Group 16 have lower ionization enthalpy values compared to those of Group 15 in the corresponding periods.

D

For Group 15 elements, the stability of + 5 oxidation state increases down the group.

3

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

Identify the correct statement :

A

Iron corrodes in oxygen-free water.

B

Iron corrodes more rapidly in salt water because its electrochemical potential is higher.

C

Corrosion of iron can be minimized by forming a contact with another metal with a higher reduction potential.

D

Corrosion of iron can be minimized by forming an impermeable barrier at its surface.

4

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

Oxidation of succinate ion produces ethylene and carbon dioxide gases. On passing 0.2 Faraday electricity through an aqueous solution of potassium succinate, the total volume of gases (at both cathode and anode) at STP (1 atm and 273 K) is :

A

2.24 L

B

4.48 L

C

6.72 L

D

8.96 L

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