So, basically, withholding information is not the same thing as lying, but depending on the situation, you will have to decide whether it is better to withhold the information or not.
Hexachlorocyclohexane (HCH) is a manufactured chemical that exists in eight chemical forms called isomers. One of these forms, gamma-HCH (or Î³-HCH, commonly called lindane) is produced and used as an insecticide on fruit, vegetables, and forest crops.
MCH stands for mean cell hemoglobin. This is a measure of the amount of hemoglobin associated with each red cell. MCHC stands for mean cell hemoglobin concentration. This value represents the mean hemoglobin concentration in each red blood cell.