JEE Advanced 2021 Paper 2 Online | p-Block Elements Question 6 | Chemistry

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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 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

JEE Advanced 2019 Paper 1 Offline

MCQ (More than One Correct Answer)

-1

A tin chloride Q undergoes the following reactions (not balanced)

$$Q + C{l^ - } \to X$$

$$Q + M{e_3}N \to Y$$

$$Q + CuC{l_2} \to Z + CuCl$$

X is a monoanion having pyramidal geometry. Both Y and Z are neutral compounds.

Choose the correct option(s).

There is a coordinate bond in Y

The central atom in Z has one lone pair of electrons.

The oxidation state of the central atom in Z is +2

The central atom in X is sp³ hybridised

JEE Advanced 2018 Paper 1 Offline

MCQ (More than One Correct Answer)

-1

The compounds(s) which generate(s) $${N_2}$$ gas upon thermal decomposition below $${300^ \circ }C$$ is (are)

$$N{H_4}N{O_3}$$

$$\left( {N{H_4}} \right){}_2C{r_2}O{}_7$$

$$Ba{\left( {{N_3}} \right)_2}$$

$$M{g_3}{N_2}$$

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