The number of chiral centres present in threonine is
The number of chiral centres present in threonine is ________. Answer: 2 2 chiral centres are present in threonine.
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Consider the following equations
Consider the following equations: 2 Fe2+ + H2O2 → x A + y B (in basic medium) 2 MnO4– +... View Article
A 100 mL solution was made by adding 1.43 g of Na2CO3. xH2O.
A 100 mL solution was made by adding 1.43 g of Na2CO3. xH2O. The normality of the solution is 0.1... View Article
The number of molecules with energy greater than the threshold energy for a reaction increases fivefold
The number of molecules with energy greater than the threshold energy for a reaction increases fivefold by a rise of... View Article
The osmotic pressure of a solution of NaCl is 0.10 atm and that of a glucose solution is 0.20 atm
The osmotic pressure of a solution of NaCl is 0.10 atm and that of a glucose solution is 0.20 atm.... View Article
An alkaline earth metal ‘M’ readily forms water-soluble sulphate and water-insoluble hydroxide. Its oxide MO is very stable to heat and does not have a rock-salt structure. M is
1) Ca 2) Be 3) Mg 4) Sr Answer: (2) Fact BeSO4 is water soluble. Be(OH)2 is water insoluble. BeO... View Article
The incorrect statement(s) among (a) – (c) is (are)
(a) W(VI) is more stable than Cr(VI). (b) in the presence of HCl, permanganate titrations provide satisfactory results. (c) some... View Article
The processes of calcination and roasting in metallurgical industries, respectively, can lead to
1) Photochemical smog and ozone layer depletion 2) Photochemical smog and global warming 3) Global warming and photochemical smog 4)... View Article
In the following reaction sequence, [C] is
In the following reaction sequence, [C] is: Option 3 is the answer.
The molecule in which hybrid AOs involve only one d-orbital of the central atom is
1) [CrF6]3- 2) XeF4 3) BrF5 4) [Ni (CN)4]2- Answer: (4) (1) (CrF6)3– – d2Sp3 (2) XeF4 – Sp3d2 (3)... View Article
The major product [R] in the following sequence
The major product [R] in the following sequence of reactions is: Answer: (2) Option 2 is the answer.
Among the following compounds, which one has the shortest C – Cl bond?
Among the following compounds, which one has the shortest C – Cl bond? Option 4 is the answer
The Crystal Field Stabilization Energy (CFSE) of [CoF3(H2O)3] (Δ0 < P) is:
1) – 0.8Δ0 2) – 0.8Δ0 + 2P 3) – 0.4Δ0 + P 4) – 0.4Δ0 Answer: (4) [CoF3(H2O)3] (Δ0... View Article
The major product [C] of the following reaction sequence will be:
The major product [C] of the following reaction sequence will be: Option 1 is the answer.
The major product [B] in the following reactions is:
The major product [B] in the following reactions is: Option 1 is the answer.
The shortest wavelength of the H atom in the Lyman series is
1) 9λ1/5 2) 27λ1/5 3) 36λ1/5 4) 5λ1/9 Answer: (1) (1/λ1) = R4 × (1)2 × {1 – [1/∞2]} =... View Article
250 mL of a waste solution obtained from the workshop
250 mL of a waste solution obtained from the workshop of a goldsmith contains 0.1 M AgNO3 and 0.1 M... View Article
Five moles of an ideal gas at 1 bar and 298 K is expanded into the vacuum to double the volume. The work done is:
1) zero 2) Cv [T2 – T1] 3) – RT (V2 – V1) 4) – RT ln (V2/V1) Answer: (1)... View Article
Which of the following compounds will form the precipitate
Which of the following compounds will form the precipitate with aq. AgNO3 solution most readily? Answer: (2) Rate of reaction... View Article
The one that can exhibit the highest paramagnetic behaviour among the following is: gly = glycinato; bpy = 2, 2’-bipyridine
1) [Ti (NH3)6]3+ 2) [Co (OX)2 (OH)2]– 3) [Pd (gly)2] 4) [Fe (en) (bpy) (NH3)2]2+ Answer: (2) [1] [Ti (NH3)6]3+... View Article
