Consider the following statements: 1. Packaged foods are purged with nitrogen gas in order to prevent their oxidation. 2. Tooth decay starts when pH of the mouth is lower than 5·5. 3. The reactivity of metals decreases in the order: Mg > Fe > Zn. Which of the statements given above is/are NOT correct?

Consider the following statements : 1. Other than those made by humans, nanoparticles do not exist in nature. 2. Nanoparticles of some metallic oxides are used in the manufacture of some cosmetics. 3…

Consider the following statements: 1. Carbon fibres are used in the manufacture of components used in automobiles and aircrafts. 2. Carbon fibres once used cannot be recycled. Which of the statements…

With reference to green hydrogen, consider the following statements: 1. It can be used directly as a fuel for internal combustion. 2. It can be blended with natural gas and used as fuel for heat or p…

Consider the following statements about Tincture of Iodine : 1: It is an antiseptic solution. 2. Iodine is kept in alcohol-water mixture. 3. Concentration of iodine is very low. How many of the above…

With reference to pre-packaged items in India, it is mandatory for the manufacturer to include the following information on the main label, as per the Food Safety and Standards (Packaging and Labelli…