1
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider the following ionization enthalpies of two elements 'A' and 'B' .

Element Ionization enthalpy (kJ/mol)
1st 2nd 3rd
A 899 1757 14847
B 737 1450 7731


Which of the following statements is correct ?
A
Both ‘A’ and ‘B’ belong to group-1where ‘B’ comes below ‘A’.
B
Both ‘A’ and ‘B’ belong to group-1 where ‘A’ comes below ‘B’.
C
Both ‘A’ and ‘B’ belong to group-2 where ‘B’ comes below ‘A’.
D
Both ‘A’ and ‘B’ belong to group-2 where ‘A’ comes below ‘B’.
2
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The pair of compounds having metals in their highest oxidation state is :
A
MnO2 and CrO2Cl2
B
[NiCl4]2$$-$$ and [CoCl4]2$$-$$
C
[Fe(CN)6]3$$-$$ and [Cu(CN)4]2$$-$$
D
[FeCl4]$$-$$ and Co2O3
3
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The rate of a reaction A doubles on increasing the temperature from 300 to 310 K. By how much, the temperature of reaction B should be Increased from 300 K so that rate doubles if activation energy of the reaction B is twice to that of reaction A.
A
9.84 K
B
4.92 K
C
2.45 K
D
19.67 K
4
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Among the following, the essential amino acid is :
A
Alanine
B
Valine
C
Aspartic acid
D
Serine

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