The half life of radioactive isotope ‘X’ is 50 years. It decays to
The half life of radioactive isotope 'X' is 50 years. It decays to another element 'Y' which is stable. The…
7 years ago
AIPMT2011
A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is
A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is Options (a) ᵐ⁻⁶ₙ₋₄ Z…
7 years ago
A planet moving along an elliptical orbit is closest to the sun at a distance of r₁
A planet moving along an elliptical orbit is closest to the sun at a distance of r₁. If v₁ and…
7 years ago
By what factor does the average velocity of a gaseous molecule increase
By what factor does the average velocity of a gaseous molecule increase when the temperature (in K) is doubled Options…
7 years ago
A solid compound XY has NaCl structure . If the radius of the cation is 100 pm,
A solid compound XY has NaCl structure . If the radius of the cation is 100 pm, the radius of…
7 years ago
Standard electrode potential for Sn⁴⁺/Sn²⁺ couple is +0.15 V and that for the
Standard electrode potential for Sn⁴⁺/Sn²⁺ couple is +0.15 V and that for the Cr³⁺/Cr couple is -0.74 V. These two…
7 years ago
Clemmensen reduction of a keton is carried out in the presence of
Clemmensen reduction of a keton is carried out in the presence of which of the following Options (a) Glycol with…
7 years ago
Which one of the following acts as a catalyst in bacterial cells?
Which one of the following acts as a catalyst in bacterial cells? Options (a) snRNA (b) hnRNA (c) 23S rRNA…
7 years ago
Sound waves travel at 350m/s through a warm air and at 3500 m/s through brass
Sound waves travel at 350m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700…
7 years ago
Two waves are represented by the equations y₁ = a sin (?t + kx + 0.57) m
Two waves are represented by the equations y₁ = a sin (?t + kx + 0.57) m and y₂ =…
7 years ago