Question Detail Chemical used in photography is sodium sulphatesodium sulphitesodium thiosulphatesodium oxalate Answer: Option C Similar Questions : 1. Iodine can be separated from a mixture of Iodine and Potassium Chloride by ? FiltrationSublimationDistillationSedimentation Answer: Option B 2. Atomic number of an element gives the number of nucleons in its atomthe number of electrons in its atomthe weight of the atom of the elementthe total number of elementary particles in its atom Answer: Option B 3. What is the hardest form of carbon ? cokegraphitecharcoaldiamond Answer: Option D 4. Which one of the following is the softest? sodiumironaluminiumlithium Answer: Option A 5. Which of the following gases is the most toxic? Carbon dioxideSulphur dioxideCarbon monoxideAcetic acid Answer: Option C Read more from - Chemistry Questions Answers