JEE Main 2019 (Online) 12th April Morning Slot | Periodic Table & Periodicity Question 79 | Chemistry

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JEE Main 2019 (Online) 12th April Morning Slot

MCQ (Single Correct Answer)

-1

The correct sequence of thermal stability of the following carbonates is :

BaCO₃ < SrCO₃ < CaCO₃ < MgCO₃

MgCO₃ < CaCO₃ < SrCO₃ < BaCO₃

BaCO₃ < CaCO₃ < SrCO₃ < MgCO₃

MgCO₃ < SrCO₃ < CaCO₃ < BaCO₃

JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

-1

The highest possible oxidation states of uranium and plutonium, respectively are

4 and 6

6 and 4

7 and 6

6 and 7

JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

-1

The correct order of the first ionization enthalpies is :

Ti < Mn < Zn < Ni

Zn < Ni < Mn < Ti

Mn < Ti < Zn < Ni

Ti < Mn < Ni < Zn

JEE Main 2019 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

The correct order of catenation is :

C > Sn > Si $$ \approx $$ Ge

Si > Sn > C > Ge

C > Si > Ge $$ \approx $$ Sn

Ge > Sn > Si > C

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