JEE Main 2019 (Online) 12th January Evening Slot | d and f Block Elements Question 58 | Chemistry

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JEE Main 2019 (Online) 12th January Evening Slot

MCQ (Single Correct Answer)

-1

Chlorine on reaction with hot and concentrated sodium hydroxide give -

C$$\ell $$O$$_3^ - $$ and C$$\ell $$O$$_2^ - $$

C$$\ell $$^$$-$$ and C$$\ell $$O^$$-$$

C$$\ell $$^$$-$$ and C$$\ell $$O$$_2^ - $$

C$$\ell $$^$$-$$ and C$$\ell $$O$$_3^ - $$

JEE Main 2019 (Online) 11th January Evening Slot

MCQ (Single Correct Answer)

-1

The hydride that is NOT electron deficient

B₂H₆

AlH₃

GaH₃

SiH₄

JEE Main 2019 (Online) 11th January Morning Slot

MCQ (Single Correct Answer)

-1

The element that usually does NOT show variable oxidation states is :

JEE Main 2019 (Online) 10th January Morning Slot

MCQ (Single Correct Answer)

-1

Hall- Heroult's process is given by

Cu²⁺ (aq) + H₂(g) $$ \to $$ Cu(s) + 2H⁺ (aq)

Cr₂O₃ + 2AI $$ \to $$ Al₂O₃ + 2Cr

2Al₂O₃ + 3C $$ \to $$ 4Al + 3CO₂

ZnO + C $$\buildrel {Coke,\,1673\,K} \over \longrightarrow $$ Zn + CO

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