JEE Main 2021 (Online) 24th February Morning Shift | s-Block Elements Question 67 | Chemistry

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JEE Main 2021 (Online) 24th February Morning Shift

MCQ (Single Correct Answer)

-1

Al₂O₃ was leached with alkali to get X. The solution of X on passing of gas Y, forms Z. X, Y and Z respectively are :

X = Na[Al(OH)₄], Y = CO₂, Z = Al₂O₃.xH₂O

X = Al(OH)₃, Y = CO₂, Z = Al₂O₃

X = Al(OH)₃, Y = SO₂, Z = Al₂O₃.xH₂O

X = Na[Al(OH)₄], Y = SO₂, Z = Al₂O₃

JEE Main 2020 (Online) 6th September Morning Slot

MCQ (Single Correct Answer)

-1

Among the sulphates of alkaline earth metals, the solubilities of BeSO₄ and MgSO₄ in water, respectively, are :

poor and poor

poor and high

high and poor

high and high

JEE Main 2020 (Online) 4th September Evening Slot

MCQ (Single Correct Answer)

-1

An alkaline earth metal ‘M’ readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt structure. M is :

JEE Main 2020 (Online) 4th September Morning Slot

MCQ (Single Correct Answer)

-1

On combustion of Li, Na and K in excess of air, the major oxides formed, respectively, are :

Li₂O, Na₂O₂ and K₂O

Li₂O₂, Na₂O₂ and K₂O₂

Li₂O, Na₂O₂ and KO₂

Li₂O, Na₂O and K₂O₂

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