Question Paper from: IIT JEE Main 2021 TestSeries Paper 2

Which will make a basic buffer?

The gold number of starch is 25. How much of it is required to prevent coagulation of 100ml of gold soln adding 1ml of 10% NaCl solution?

The Van't Hoff factor for a 0.1M Al₂(So₄)₃ solution is 4.20. The degree of dissociation is

Which of the following organic compounds polymerize to form polyester dacron?

Which of the following will have intramolecular hydrogen bonding?

The vapour density of a volatile chloride of divalent metal is 59.5 and equivalent mass of the metal is

Find out the correct order of heat of hydrogenation of these compounds

During Bessemerisatio of copper, the reaction taking place in Bessemer converter is

Among the following compounds I, II, III the correct order of rate of electrophilic substitution is

The above diketone on intramolecular aldol condensation gives the final product as one in following

The mass of molecule A is twice the mass of molecule B. The RMS speed of A is twice the RMS speed of B. If two samples A and B contain the same number of molecules, what will be the ratio of pressures of 2 samples in 2 separate containers of equal volume?

If C-C bond energy is 348 KJmol^-1, C-H bond energy is 412 KJ mol^-1 and H-H bond energy is 436 KJ mol^-1, the Pauling electronegativity of C is about [Given Electronegativity of H = 2.1]

In a compound, XY₂O₄ oxide ions are arranged in CCP structure. Cation X is present in the octahedral void and cation Y is equally distributed between octahedral and tetrahedral voids. The fraction of the octahedral voids occupied are

Glutamic acid H₂N-CH(CH₂ CH₂ COOH).COOH has $pK{a}_1(\alpha -COOH)=2.2,pK{a}_2(\alpha -N{H}_3^{+})=9.8$ and $pK{a}_3(RgroupCOOH)=4.3$ The isoelectric point of glutamic acid is

Arrange the following carbocation in the increasing order of stability

The correct set of quantum number for the unpaired electron of chlorine atom is

The ideal gas is compressed isothermally and reversibly at 400K from 1m³ to 0.5 m³. 9200J heat is evolved at compression What is the work fulfilled and how many moles of gas compress in this process?

Which of the following statements is not true for halogens?

In the electrochemical cell:

Zn$\mid$ZnSO₄ (0.01 M) $\parallel$ CuSO₄ (1.0 M) $\mid$ Cu, the emf of this daniel cell is E1. When the concentration of ZnSO₄ is changed to 1.0M and that of CuSO₄ changed to 0.01M, the emf changes to E_2. Which one is the relationship between E1 and E2 from the following? (Given $\frac{RT}{F}=0.059$)