A solid compound is formed by atoms of A (cations), B (cations), and O (anions). Atoms of O form an hcp lattice. Atoms of A occupy 25% of tetrahedral holes and atoms of B occupy 50% of octahedral holes. What is the molecular formula of the solid?

The Henry’s law constant (K_H) values of three gases (A, B, C) in water are 145, 2 × 10^–5 and 35 kbar, respectively. The solubility of these gases in water follow the order :

Which of the following compounds will be repelled when placed in an external magnetic field?

The charge on colloidal particles is due to:

The major product X in the following given reaction is:

Electron affinity is positive when:

The highest number of helium atoms is in

Which of the following sets are correctly matched?
(i) B2H6- electron deficient hydride
(ii) NH3- electron precise hydride
(iii) H2O- electron rich hydride

The combustion of benzene (L) gives CO$_2$ (g) and H$_2$O (L). Given that heat of combustion of benzene at constant volume is -3263.9 kJ/mol at 25°C, heat of combustion (in kJ/mol) of benzene at constant pressure will be: (R = 8.314 J$K^{-1}$ $mol^{-1}$)

The diffraction pattern of a crystalline solid gave a peak at $ 2\theta = 60^\circ $. What is the distance (in cm) between the layers that gave this peak? \[ \text{(Given: Wavelength } \lambda = 1.544\text{ Å, } \sin 30^\circ = 0.5, \sin 60^\circ = 0.866, n=1) \]

A hydrocarbon containing C and H has 92.3% C. When 39 g of hydrocarbon was completely burnt in O_2, x moles of water and y moles of CO₂were formed. x moles of water is sufficient to liberate 0.75 moles of H₂ with Na metal. What is the weight (in g) of oxygen consumed?