JEE Main 2019 (Online) 12th April Evening Slot | s-Block Elements Question 74 | Chemistry

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JEE Main 2019 (Online) 12th April Evening Slot

MCQ (Single Correct Answer)

-1

The INCORRECT statement is :

Lithium is least reactive with water among the alkali metals

LiCl crystallises from aqueous solution as LiCl.2H₂O

Lithium is the strongest reducing agent among the alkali metals

LiNO₃ decomposes on heating to give LiNO₂ and O₂

JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

-1

A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above 373 K leads to an anhydrous white powder Z. X and Z, respectively, are :

Baking soda and dead burnt plaster.

Washing soda and soda ash

Washing soda and dead burnt plaster.

Baking soda and soda as.

JEE Main 2019 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

The alloy used in the construction of aircrafts is :

Mg – Zn

Mg – Al

Mg – Mn

Mg – Sn

JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

Magnisium powder burns in air to give:

MgO and Mg₃N₂

MgO only

Mg(NO₃)₂ and Mg₃N₂

MgO and Mg(NO₃)₂

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