Be²⁺ is isoelectronic with which of the following ions?
Options
(a) H⁺ (b) Li⁺ (c) Na⁺ (d) Mg²⁺
Correct Answer:
Li⁺
Explanation:
Be²⁺= (4-2) = 2 is isoelectronic with Li⁺ (3-1 =2) Since both […]
Artificial sweetner which is stable under cold conditions only is
Options
(a) saccharine (b) sucralose (c) aspartame (d) alitame
Correct Answer:
aspartame
Explanation:
No explanation available. Be the first to write the explanation […]
Among the following sets of reactants which one produces anisole
Options
(a) CH₃CHO ; RMgX (b) C₆H₅OH ; NaOH ; CH₃I (c) C₆H₅OH ; neutral FeCl₃ (d) C₆H₅CH₃ ; CH₃COCl ; AlCl₃
Correct […]
Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is
Options
(a) [Mn(H₂O)₆]³⁺ (b) [Fe(H₂O)₆]³⁺ (c) [Co(H₂O)₆]²⁺ (d) [Co(H₂O)₆]³⁺
Correct Answer:
[Fe(H₂O)₆]³⁺
Explanation:
No explanation available. Be the […]
Acidity of diprotic acids in aqueous solutions increases in the order
Options
(a) H₂S < H₂Se < H₂Te (b) H₂Se < H₂S < H₂S (c) H₂Te < H₂S < H₂Se (d) H₂Se < […]
1.0 g of magnesium is burnt with 0.56 g O₂ in a closed vessel.Which reactant is left in excess and how much? (At.wt.Mg=24, O=16)
Options
(a) Mg,0.16g (b) O₂,0.16g (c) Mg,0.44g (d) O₂,0.28g
Correct […]
(I) H₂O₂ + O₃ → H₂O + 2O₂ (II) H₂O₂ + Ag₂O → 2Ag + H₂O + O₂ Role of hydrogen peroxide in the above reactions is respectively
Options
(a) Oxidizing in (I) […]
The input signal given to a CE amplifier having a voltage gain of 150 is Vi=2 cos (15t+π/3). The corresponding output signal will be
Options
(a) 75 cos(15t+2π/3) (b) 2 cos(15t+5π/6) (c) 300 […]
Two slits in Young’s experiment have widths in the ratio 1:25. The ratio of intensity at the maxima and minima in the interference pattern, Imax/Imin is
Options
(a) 121/49 (b) 49/121 (c) 04/09/18 […]
A series R-C circuit is connected to an alternating voltage source. Consider two situations: (A) When capacitor is air filled (B) When capacitor is mica filled Current through resistor is i and voltage across capacitor […]
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