Glacial acetic acid is concentrated, 99.5% pure acetic acid; it solidifies at about 17°C to a crystalline mass resembling ice. Heinz Distilled White Vinegar 16 oz contains 5% acetic acid in water 20% Vinegar.

Methanol and water mixture is homogeneous.

The electrochemical cell stops working after some time because electrode potential of both electrodes equalizes.

' Misch metal ' is widely used in manufacture of Cigarette lighters.

Hydrogen Bomb is based on the principle of Nuclear Fusion.

Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

The difference in mass between the reactants and products is manifested as either the release or absorption of energy.

The absolute value of charge on electron was determined by R.A. Millikan.

The isotopes of chlorine with mass number 35 and 37 exist in the ratio of 3:1.

If the Electronic configuration of a molecule has only paired or spin paired electrons, then that molecule is said to be Diamagnetic.

Water at ordinary temperatures contracts and increases in density as it is cooled, like most substances. But at about 4°C it reaches a maximum density and then decreases in density as it approaches the freezing point.

Due to absence of low lying vacant d orbital in B, sp³d² hybridization is not possible hence BF³⁻₆will not formed.