A thin ring of radius R meter has charge q coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of f revolutions/s. The value of magnetic induction in Wb/m² […]
The magnetic moment of a diamagnetic atom is
Options
(a) equal to zero (b) much greater than one (c) 1 (d) between zero and one
Correct Answer:
equal to zero
Explanation:
The magnetic […]
A vibration magnetometer placed in magnetic meridian has a small bar magnet. The magnet executes oscillations with a time period of 2 sec in earth’s horizontal magnetic field of 24 microtesla. When a horizontal field […]
Which of the following compounds is a peroxide
Options
(a) KO₂ (b) BaO₂ (c) MnO₂ (d) NO₂
Correct Answer:
BaO₂
Explanation:
No explanation available. Be the first to write the explanation for this […]
Property of the alkaline earth metals that increases with their atomic number
Options
(a) solubility of their hydroxides in water (b) solubility of their sulphates in water (c) ionization energy (d) electronegativity
Correct […]
A ray of light travelling in a transparent medium of refractive index µ, falls on surface seperating the medium from air at an angle of incidence of 45⁰. For which of the following value of […]
A lens having focal length f and aperture of diameter d forms an image of intensity I. Aperature of diameter d/2 in central region of lens is covered by a black paper. Focal length of […]
Which of the following species is not electrophilic in nature
Options
(a) Cl⁺ (b) BH₃ (c) H₃O⁺ (d) NO₂⁺
Correct Answer:
H₃O⁺
Explanation:
No explanation available. Be the first to write the explanation […]
Which one is most reactive towards SN1 reaction
Options
(a) C₆H₅CH(C₆H₅)Br (b) C₆H₅CH(CH₃)Br (c) C₆H₅C(CH₃)(C₆H₅)Br (d) C₆H₅CH₂Br
Correct Answer:
C₆H₅C(CH₃)(C₆H₅)Br
Explanation:
No explanation available. Be the first to write the explanation for this […]
Which one of the following complexes is not expected to exhibit isomerism
Options
(a) [Ni(NH₃)₄(H₂O)₂]²⁺ (b) [Pt(NH₃)₂Cl₂] (c) [Ni(NH₃)₂Cl₂] (d) [Ni(en)₃]²⁺
Correct Answer:
[Ni(NH₃)₂Cl₂]
Explanation:
No explanation available. Be the first to write […]
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