JEE Advanced 2022 Paper 2 Online | p-Block Elements Question 5 | Chemistry

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JEE Advanced 2022 Paper 2 Online

MCQ (More than One Correct Answer)

-2

The compound(s) which react(s) with $\mathrm{NH}_{3}$ to give boron nitride (BN) is(are)

$\mathrm{B}$

$\mathrm{B}_{2} \mathrm{H}_{6}$

$\mathrm{B}_{2} \mathrm{O}_{3}$

$\mathrm{HBF}_{4}$

JEE Advanced 2021 Paper 2 Online

MCQ (More than One Correct Answer)

-2

The correct statement(s) related to oxoacids of phosphorous is(are)

Upon heating, H₃PO₃ undergoes disproportionation reaction to produce H₃PO₄ and PH₃.

While H₃PO₃ can act as reducing agent, H₃PO₄ cannot.

H₃PO₃ is a monobasic acid.

The H atom of P-H bond in H₃PO₃ is not ionizable in water.

JEE Advanced 2020 Paper 1 Offline

MCQ (More than One Correct Answer)

-2

With respect to hypochlorite, chlorate and perchlorate ions, choose the correct statement(s).

The hypochlorite ion is the strongest conjugate base.

The molecular shape of only chlorate ion is influenced by the lone pair of electrons of Cl.

The hypochlorite and chlorate ions disproportionate to give rise to identical set of ions.

The hypochlorite ion oxidises the sulphite ion.

JEE Advanced 2019 Paper 2 Offline

MCQ (More than One Correct Answer)

-1

Consider the following reactions (unbalanced).

$$Zn + Hot\,conc.\,{H_2}S{O_4}\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{}} G + R + X$$

$$Zn + conc.\,NaOH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{}} T + Q$$

$$G + {H_2}S + N{H_4}OH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{}} Z\,(a\,precipitate) + X + Y$$

Choose the correct option(s).

The oxidation state of Zn in T is +1

R is a V-shaped molecule

Bond order of Q is 1 in its ground state

Z is dirty white in colour

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