Give the example for electrophilic substitution reaction?

1216

What does one Debye equals?

1269

Give the formula for baking soda.

1115

What is the element in third series the element with maximum oxidation state?

1105

In which forms arsenic impurities present in drug.

1523

What is the molecular formula of phosphorous?

1126

In water molecule the bond angle decreases from 109.28 to 104.5, why this does happens?

1059

How do you call the geometrical isomerism, similar groups are present on same side?

1093

What is the name of the dna duplication process?

1073

Since pepsin is a gastric enzyme does it, has acid or basic optimum ph? What happen to pepsin when it passes to the duodenum?

1087

Explain what are the raw materials used for the precipitation of na2co3 by solvay ammonium process?

1129

Define polar covalent bond?

1296

In sickle cell anemia, a hereditary disease, there is substitution of one amino acid by other in one of the four-polypeptide chains of hemoglobin. In this case, are all of the structural levels of the protein modified?

1348

What causes the elasticity of corneal layer of skin?

1219

What are nucleic acids? What is the historic origin of this name?

1181