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Which of the following is not an essential amino acid?

1) Valine 2) Tyrosine 3) Lysine 4) Leucine Solution : (2) Tyrosine in not an essential amino acid. Hence option 2 is the answer.... View Article

The most appropriate reagent for conversion of C₂H₅CN into CH₃CH₂CH₂NH₂ is

1) NaBH4 2) Na(CN)BH3 3) CaH2 4) LiAlH4 Solution: LiAlH4 is the answer.... View Article

The potential energy curve for the H₂ molecule

The potential energy curve for the H2 molecule as a function of internuclear distance is: Solution: (2)... View Article

The number of chiral carbons present in sucrose is

Answer: (9) The number of chiral carbons present in sucrose is 9.... View Article

For a dimerization reaction

For a dimerization reaction 2A(g) --> A2(g) at 298 K, ∆U- = -20KJ mol-1, ∆S- = 30KJ mol-1, then the ∆G- will be... View Article

Considering that ∆₀ > P, the magnetic moment (in BM) of [Ru(H₂O)₆] ²⁺ would be

Solution: [Ru(H2O)6)2+ Ru 2+ = 3d6(∆0 > P) = t2g6 eg0 n = 0, u = 0... View Article

The volume, in mL, of 0.02 M K₂Cr₂O₇ solution required to react with 0.288 g of ferrous oxalate in acidic medium is ________. (Molar mass of Fe= 56 g mol^–1)

Answer: (50 ml) K2Cr2O7+ FeC2O4 → Cr3+ + Fe3+ + CO2 Vol. = 200/4 = 50 ml ... View Article

For a reaction [latex]X + Yrightleftharpoons 2Z[/latex] , 1.0 mol of X, 1.5 mol of Y and 0.5 mol of Z were taken in a 1 L vessel and allowed to react.

For a reaction , 1.0 mol of X, 1.5 mol of Y and 0.5 mol of Z were taken in a 1 L vessel and allowed to react. At equilibrium, the concentration... View Article

The one that is NOT suitable for the removal of permanent hardness of water is:

1) Ion-exchange method 2) Calgon’s method 3) Treatment with sodium carbonate 4) Clark’s method Answer: (4) Clark’s method is... View Article

The increasing order of boiling points

The increasing order of boiling points of the following compounds is: 1) I < III < IV < II 2) IV < I < II < III 3) I <... View Article

The correct order of the ionic radii of O^2–, N ^3–, F^–, Mg²⁺, Na⁺ and Al³⁺ is:

1) N3– < O2– < F– < Na+ < Mg2+ < Al3+ 2) N3– < F– < O2– < Mg2+ < Na+ < Al3+... View Article

An element crystallises in a face-centred cubic (fcc) unit cell with cell edge a. The distance between the centres of two nearest octahedral voids in the crystal lattice is:

1) a 2) a/2 3) √2a 4) a/√2 Answer: (4) Nearest octahedral voids One along edge center & other at Body centre... View Article

Consider the complex ions, trans-[Co(en)₂Cl₂]⁺ (A) and cis-[Co(en)₂Cl₂]⁺ (B). The correct statement regarding them is

1) Both (A) and (B) can be optically active. 2) (A) can be optically active, but (B) cannot be optically active. 3) Both (A) and (B) cannot be... View Article

Which one of the following polymers is not obtained by condensation polymerisation?

1) Bakelite 2) Nylon 6 3) Buna-N 4) Nylon 6, 6 Solution: Option 3 is the answer.... View Article

Reaction of ammonia with excess Cl₂ gives:

Reaction of ammonia with excess Cl2 gives: 1) NH4Cl and N2 2) NH4Cl and HCl 3) NCl3 and HCl 4) NCl3 and NH4Cl Solution: Hence option 3 is... View Article

Lattice enthalpy and enthalpy of solution of NaCl are 788 kJ mol^–1, and 4 kJ mol^–1, respectively. The hydration enthalpy of NaCl is

1) –780kJ mol–1 2) 784kJ mol–1 3) –784kJ mol–1 4) 780kJ mol–1 Answer: (3) ΔHsol=L.E + ΔHhyd... View Article

The final major product of the following reaction is:

The final major product of the following reaction is: Answer: (3) Hence option 3 is the answer.... View Article

The variation of molar conductivity with concentration of an electrolyte (X) in aqueous solution is shown in the given figure. The electrolyte X is:

1) HCl 2) CH3COOH 3) NaCl 4) KNO3 Answer: (2) Such type of variation is always for weak electrolyte. Hence Ans. (2) CH3COOH... View Article

The rate constant (k) of a reaction is measured at different temperatures

The rate constant (k) of a reaction is measured at different temperatures (T), and the data are plotted in the given figure. The activation... View Article

The correct statement about probability density (except at infinite distance from nucleus) is :

1) It can be zero for 3p orbital 2) It can be zero for 1s orbital 3) It can never be zero for 2s orbital 4) It can negative for 2p orbital... View Article

M	T	W	T	F	S	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
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