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In the following reaction sequence the major products A and B are:

Solution: (4) Option 4 is the answer.... View Article

The difference between the radii of

The difference between the radii of 3rd and 4th orbits of Li2+ is ΔR1. The difference between the radii of 3rd and 4th orbits of He+ is... View Article

In the sixth period, the orbitals that are filled are:

1) 6s, 5d, 5f, 6p 2) 6s, 4f, 5d, 6p 3) 6s, 6p, 6d, 6f 4) 6s, 5f, 6d, 6p Solution: (2) Energy order of orbital’s according to Aufbau... View Article

The condition that indicates a polluted environment is

1) pH of rain water to be 5.6 2) BOD value of 5 ppm 3) 0.03% of CO2 in the atmosphere 4) eutrophication Solution: (4) Eutrophication is the... View Article

The increasing order of basicity of the following compounds is:

Solution: Correct order of basicity. Hence option 4 is the answer. ... View Article

A flask contains a mixture of compounds A and B.

A flask contains a mixture of compounds A and B. Both compounds decompose by first order kinetics. The half-lives for A and B are 300 s and 180... View Article

The values of the crystal field stabilization energies for a high spin d⁶ metal ion in octahedral and tetrahedral fields, respectively, are

1) –2.4 Δo and –0.6 Δt 2) –1.6 Δo and –0.4 Δt 3) –0.4 Δo and –0.27 Δt 4)... View Article

If a person is suffering from the deficiency of nor-adrenaline, what kind of drug can be suggested?

1) Antihistamine 2) Antidepressant 3) Anti-inflammatory 4) Analgesic Solution: (2) If nor-adrenaline is low, person may suffer from... View Article

Identify correct molecular picture

1) (B) 2) (A) 3) (C) 4) (D) Solution: Option 4 is the answer.... View Article

The increasing order of the acidity

The increasing order of the acidity of the α-hydrogen of the following compounds Solution: (1) Stability order ... View Article

The equation that represents the water-gas shift reaction is:

Solution: (1) Water-gas shift reaction: CO(g) + H2O --> CO2(g) + H2(g)... View Article

A diatomic molecule X₂ has a body-centred cubic

A diatomic molecule X2 has a body-centred cubic (bcc) structure with a cell edge of 300 pm. The density of the molecule is 6.17 g cm–3. The... View Article

The structure of PCl₅ in the solid state is

1) Square planar [PCl4]+ and octahedral [PCl6]– 2) Tetrahedral [PCl4]+ and octahedral [PCl6]– 3) Trigonal bipyramidal 4) Square... View Article

Which of the following derivatives of alcohols is unstable in an aqueous base?

Solution: (1) Hydrolysis of ester occurs in basic medium.... View Article

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

M	T	W	T	F	S	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30