Q57. Consider the following first order gas phase reaction at constant temperature $\mathrm { A } ( \mathrm { g } ) \rightarrow 2 \mathrm {~B} ( \mathrm {~g} ) + \mathrm { C } ( \mathrm { g } )$ If the total pressure of the gases is found to be 200 torr after 23 sec . and 300 torr upon the complete decomposition of A after a very long time, then the rate constant of the given reaction is $\_\_\_\_$ $\times 10 ^ { - 2 } \mathrm {~s} ^ { - 1 }$ (nearest integer) [Given : $\log _ { 10 } ( 2 ) = 0.301$ ]

Q58. Consider the following reaction $\mathrm { MnO } _ { 2 } + \mathrm { KOH } + \mathrm { O } _ { 2 } \rightarrow \mathrm {~A} + \mathrm { H } _ { 2 } \mathrm { O }$. Product ' A ' in neutral or acidic medium disproportionate to give products ' B ' and ' C ' along with water. The sum of spin-only magnetic moment values of B and C is BM . (nearest integer) (Given atomic number of Mn is 25 )

Q58. Phthalimide is made to undergo following sequence of reactions.

(i) KOH
(ii)Benzylchloride

Phthalimide

[Figure]
Total number of $\pi$ bonds present in product ' P ' is/are $\_\_\_\_$

Q58. The number of halobenzenes from the following that can be prepared by Sandmeyer's reaction is $\_\_\_\_$ [Figure]
I [Figure]
II [Figure]
III [Figure]
IV [Figure]
V

Q58. In the Claisen-Schmidt reaction to prepare 351 g of dibenzalacetone using 87 g of acetone, the amount of benzaldehyde required is $\_\_\_\_$ g. (Nearest integer)

Q58. The difference in the 'spin-only' magnetic moment values of $\mathrm { KMnO } _ { 4 }$ and the manganese product formed during titration of $\mathrm { KMnO } _ { 4 }$ against oxalic acid in acidic medium is $\_\_\_\_$ BM. (nearest integer)

Q58. When ' $x ^ { \prime } \times 10 ^ { - 2 } \mathrm {~mL}$ methanol (molar mass $= 32 \mathrm {~g}$; density $= 0.792 \mathrm {~g} / \mathrm { cm } ^ { 3 }$ ) is added to 100 mL water (density = $1 \mathrm {~g} / \mathrm { cm } ^ { 3 }$ ), the following diagram is obtained. [Figure] $x =$ $\_\_\_\_$ (nearest integer). [Given : Molal freezing point depression constant of water at 273.15 K is $1.86 \mathrm {~K} \mathrm {~kg} \mathrm {~mol} ^ { - 1 }$ ]

Q58. Major product $B$ of the following reaction has $\_\_\_\_$ $\pi$-bond. [Figure]

Q58. Total number of unpaired electrons in the complex ions $\left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { 3 + }$ and $\left[ \mathrm { NiCl } _ { 4 } \right] ^ { 2 - }$ is

Q58. Number of colourless lanthanoid ions among the following is $\_\_\_\_$ $\mathrm { Eu } ^ { 3 + } , \mathrm { Lu } ^ { 3 + } , \mathrm { Nd } ^ { 3 + } , \mathrm { La } ^ { 3 + } , \mathrm { Sm } ^ { 3 + }$

Q58. Number of oxygen atoms present in chemical formula of fuming sulphuric acid is $\_\_\_\_$ .

Q59. The number of the correct reaction(s) among the following is $\_\_\_\_$
(A) [Figure]
(B) [Figure]
(C) [Figure]
(D) [Figure]

Q59. From 6.55 g of aniline, the maximum amount of acetanilide that can be prepared will be $\_\_\_\_$ $\times 10 ^ { - 1 } \mathrm {~g}$.

Q59. Consider the given chemical reaction sequence : [Figure]
Total sum of oxygen atoms in Product A and Product B are $\_\_\_\_$ Q60. [Figure]
In a borax bead test under hot condition, a metal salt (one from the given) is heated at point B of the flame, resulted in green colour salt bead. The spin-only magnetic moment value of the salt is $\_\_\_\_$ BM (Nearest integer) [Given atomic number of $\mathrm { Cu } = 29 , \mathrm { Ni } = 28 , \mathrm { Mn } = 25 , \mathrm { Fe } = 26$ ]

Q59. The product ( C ) in the following sequence of reactions has $\_\_\_\_$ $\pi$ bonds. [Figure] [Figure]

Q59. The major products from the following reaction sequence are product $A$ and product B . [Figure]
The total sum of $\pi$ electrons in product $A$ and product $B$ are $\_\_\_\_$ (nearest integer)

Q59. Total number of species from the following with central atom utilising $\mathrm { sp } ^ { 2 }$ hybrid orbitals for bonding is $\_\_\_\_$ . $\mathrm { NH } _ { 3 } , \mathrm { SO } _ { 2 } , \mathrm { SiO } _ { 2 } , \mathrm { BeCl } _ { 2 } , \mathrm { C } _ { 2 } \mathrm { H } _ { 2 } , \mathrm { C } _ { 2 } \mathrm { H } _ { 4 } , \mathrm { BCl } _ { 3 } , \mathrm { HCHO } , \mathrm { C } _ { 6 } \mathrm { H } _ { 6 } , \mathrm { BF } _ { 3 } , \mathrm { C } _ { 2 } \mathrm { H } _ { 4 } \mathrm { Cl } _ { 2 }$
Q60. [Figure]
The ratio of number of oxygen atoms to bromine atoms in the product $Q$ is $\_\_\_\_$ $\times 10 ^ { - 1 }$.

Q59. If 279 g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be $\_\_\_\_$ g. (nearest integer) (consider complete conversion).

Q59. Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous NaOH after heating gives $x$ as the major product. The number of $\pi$ bonds in the product $x$ is $\_\_\_\_$

Q59. Number of ambidentate ligands among the following is $\_\_\_\_$ $\mathrm { NO } _ { 2 } ^ { - } , \mathrm { SCN } ^ { - } , \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } ^ { 2 - } , \mathrm { NH } _ { 3 } , \mathrm { CN } ^ { - } , \mathrm { SO } _ { 4 } ^ { 2 - } , \mathrm { H } _ { 2 } \mathrm { O }$.

Q59. A transition metal ' M ' among Sc, Ti, V, Cr, Mn and Fe has the highest second ionisation enthalpy. The spinonly magnetic moment value of $\mathrm { M } ^ { + }$ion is $\_\_\_\_$ . BM (Near integer) (Given atomic number $\mathrm { Sc } : 21 , \mathrm { Ti } : 22 , \mathrm {~V} : 23 , \mathrm { Cr } : 24 , \mathrm { Mn } : 25 , \mathrm { Fe } : 26$ )

Q60. Xg of ethylamine is subjected to reaction with $\mathrm { NaNO } _ { 2 } / \mathrm { HCl }$ followed by water; evolved dinitrogen gas which occupied 2.24 L volume at STP. X is $\quad \times 10 ^ { - 1 } \mathrm {~g}$.

Q60. Vanillin compound obtained from vanilla beans, has total sum of oxygen atoms and $\pi$ electrons is $\_\_\_\_$

Q60. Xg of ethanamine was subjected to reaction with $\mathrm { NaNO } _ { 2 } / \mathrm { HCl }$ followed by hydrolysis to liberate $\mathrm { N } _ { 2 }$ and HCl . The HCl generated was completely neutralised by 0.2 moles of $\mathrm { NaOH } . X$ is $\_\_\_\_$ g.

Q60. 9.3 g of pure aniline upon diazotisation followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume $100 \backslash \%$ yield/conversion) is $\_\_\_\_$ g. (nearest integer)