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Match for 86-89 Match Ka values 86) Benzoic acid (A) 4.2×10-5 87) p-nitrobenzoic acid (B) 6.4×10-5 88) p-chlorobenzoic acid (C) 3.62×10-4 89) p-methylbenzoic acid (D) 1.02×10-4 ...

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E is ...

A is ...

Match for 82-85 Match the crystal systems with the unit cells 82) Monoclinic (A) simple cubic 83) Triclinic (B) face centred 84) Orthorhombic (C) body centred 85) Cubic (D) end centred ...

Comprehension for 67-69 A white substance A reacts with dilute H2SO4 to produce a colourless gas B and a colourless solution C. The reation between B and acidified K2Cr2O7 solution produces a green solution and a slightly col ...

Which one of the following is one of the isomer of the product B? ...

How many optically isomers possible for the alkane formed? ...

Comprehension for 64-66 A compound A, C7H15Br, forms a grignard reagent with magnesium in anhydrous ether which can be hydrolysed by water and acid to give an optically active alkane C7H16. A when reacted with aqueous sodium ...

E is ...

C on acidification gives ...

Comprehension for 79-81 An alcohol A, when heated with conc. H2SO4 gives an alkene B. When B is bubbled through bromine water and the product is dehydrohalogenated with excess of sodamide, a new compound C is formed. C reacts ...

The temperature at which the reaction is going on is ...

The energy of activation for this reaction is ...

Comprehension for 76-78 The reaction given below is observed to be first order with rate constant varying as logK=14.34-1.25×104/T 2A(g)→4B(g)+C(g) Initial pressure of A is 0.16 atm.The total pressure becomes 0.28 atm ...

Further 2 g of NaOH is added to the solution, then pH is ...

6 g of NaOH is added to the above solution, pH of the solution is(no change in volume in mixing) ...

Comprehension for 61-63 500 ml of 0.2 M aqueous solution of an acid HA is mixed with 500 ml of 0.2 M HCl at 298 K Ka of acid HA is 10-5 mol/L The degree of dissociation of acid is ...

STATEMENT-I: [NiCl4]2- is paramagnetic while [Ni(CN)4]2- is diamagnetic STATEMENT-II: [Ni(CN)4]2- is sp3 hybridized while [NiCl4]2- is dsp2 hybridized ...

STATEMENT-I: PCl5 exists but not NCl5 STATEMENT-II: Phosphorus has lower electronegativity than nitrogen ...

STATEMENT-I: CH3COOH is stronger acid than HCOOH STATEMENT-II: -CH3 is electron releasing group ...

STATEMENT-I: Direct nitration of aniline gives ortho and para-nitroaniline STATEMENT-II: -NH2 is ortho para directing group ...

STATEMENT-I: For spontaneous cell reaction, standard electrode potential of cell is greater than zero STATEMENT: ΔG=-nFE, so ΔG<0 implies E>0 ...

Given reaction 2HI(g) [eq] H2(g)+I2(g) Statement-I: Concentration of I2 can be increased by increasing the concentration of HI Statement-II: degree of dissociation of HI is affected only by change of temperature ...

Reasoning Type Statement-I: At 298 K, average kinetic energy of Helium atom is two times that of hydrogen molecule. Statement-II: Helium atom is two times heavier than a hydrogen molecule ...

Reasoning Type Statement-I: Work in adiabatic process is state function Statement-II: There is no exchange of heat by the system in adiabatic process ...