JEE Main 2019 (Online) 12th April Morning Slot | s-Block Elements Question 91 | Chemistry

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

Out of Syllabus

The alloy used in the construction of aircrafts is :

Mg – Zn

Mg – Al

Mg – Mn

Mg – Sn

JEE Main 2019 (Online) 9th April Evening Slot

MCQ (Single Correct Answer)

-1

Out of Syllabus

The structures of beryllium chloride in the solid state and vapour, phase, respectively,are :

chain and chain

dimeric and chain

chain and dimeric

dimeric and dimeric

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