Q. Washing soda is the common name for ?
? Sodium carbonate
Q. Which of the gas is not known as green house gas ?
Q. Bromine is a ?
? Red liquid
Q. The hardest substance available on earth is ?
Q. Which of the following is used as a lubricant ?
Q. The average salinity of sea water is ?
Q. Galvanised iron sheets have a coating of ?
Q. The group of metals Fe, Co, Ni may best called as ?
? Transition metals
Q. Heavy water is ?
? Deuterium oxide
Q. The element common to all acids is ?
Q. Non stick cooking utensils are coated with ?