Which of the following oxidation states are the most characteristic for lead
Which of the following oxidation states are the most characteristic for lead and tin respectiviely? Options (a) 2,4 (b) 4,4…
7 years ago
AIPMT2007
The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å. The refractive…
7 years ago
In a radioactive decay process, the negatively charged emitted β- particles are
In a radioactive decay process, the negatively charged emitted β- particles are Options (a) the electrons produced as a result…
7 years ago
Nickel shows ferromagnetic property at room temperature. If the temperature is
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show Options…
7 years ago
A charged particle (charge q) is moving in a circle of radius R with uniform speed v
A charged particle (charge q) is moving in a circle of radius R with uniform speed v. The associated magnetic…
7 years ago
A beam of electron passes undeflected through mutually perpendicular
A beam of electron passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off,…
7 years ago
Two satellites of earth, S₁ and S₂ are moving in the same orbit. The mass of S₁
Two satellites of earth, S₁ and S₂ are moving in the same orbit. The mass of S₁ is four times…
7 years ago
Foolish seedling disease of rice led to the discovery of
Foolish seedling disease of rice led to the discovery of Options (a) abscisic acid (b) cytokinin (c) 2,4-D (d) gibberellin…
7 years ago
An engine has an efficiency of 1/6. When the temperature of sink is reduced
An engine has an efficiency of 1/6. When the temperature of sink is reduced by 62⁰C, its efficiency is doubled.…
7 years ago
For a cubic crystal structure which one of the following relations
For a cubic crystal structure which one of the following relations indicating the cell characteristics is correct? Options (a) a…
7 years ago