NEET 2019
For the following questions answer them individually
A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is:
The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is
pH of a saturated solution of $$Ca(OH)_2$$ is 9. The solubility product $$(K_{sp}) of Ca(OH)_2$$ is:
The radius of circle, the period of revolution, initial position and sense of revolution are indicated in the fig.
y - projection of the radius vector of rotating particle P is:
A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre:
When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L + l). The elastic potential energy stored in the extended wire is :
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction ?
