Questions

In chemistry, Weak bonds are those forces of attraction that, do not take a large amount of energy to break.

For example, hydrogen bonds are broken by energies in the order of 4 - 5 kcal/mol.

Ionic bonds, hydrogen bonds and van der Waals interactions are considered weak bonds.

Weak bonds are transient and easily reversible.

Euclid of Alexandria was a Greek mathematician, often referred to as the Father of Geometry.

India's GDP growth will remain in the range of 6.5-7.5 per cent over the next 12-18 months and GST will support the momentum for faster growth, a Moody's poll said.

Pneumonia is a lung infection which is usually caused by a bacteria or virus or fungi in one segment or the whole lung or both lungs. Lobar Pneumonia refers to a lung infection in which it affects the large segment of the lung or lobe.

Normality is a way of expressing concentration of a solution and can be calculated by the formula-

Normality (N) = No. of gram equivalent of solute/ volume of solution (in litre)

Gram equivalent weight of H2 SO4 = Molecular weight/ No. of Hydrogen atom = 98/2 = 49 gm

No. of gram equivalent in 49 gm of H2 SO4 = 1

So, Normality in 1 litre of solution = 1/1 = 1 N