Here is some top most asked question in genral science related to the chemisttry which may be ask in government exam like sbi po , group c, IAS, PCS etc.

• Of which alloy the commonly used safety fuse-wire is made? – Alloy of Tin and Lead


• What is alcohol obtairied in the saponification process? – Glycerol


• Which antiseptic compound is present in Dettol? – Chloroxylenol


• By which was the presence of Cobalt. in Vitamin B-12 established for the first time? – Borax-Bead test


• Which metal can deposit copper from copper sulphate solution? – Iron


• Which group of gases contribute to the "Green House effect"? – Carbon dioxide and Methane


• Of which Container radioactive materials should be kept? – Pb


•  Which is not an anaesthetic agent in surgical operations? – Acetone


• What is the percentage of Nitrogen, present in ammonium sulphate? – 21%


• Which is the nuclear particle having no mass and no charge, but only spin? – Neutrino


• The pH of fresh milk is 6. When it turns sour, what will be the pH? – Less than 6


• What is a compound that is a white solid which absorbs water vapour from the air? – Calcium chlorid


•  To which product of equivalent weight and valency of an element is equal? – Atomic weight


• Which element forms the highest number of compounds in the periodic table? – Silicon


• What is the name of gas which is present in both the natural gas and the biogas? – Methane


• How many elements are in the second period of the periodic table? – Eight


• How does addition of ethylene dibromide help to petrol? – Elimination of lead oxide


• What do we call the process of separation of pure water from impurities? – Distillation


• With which liqued is anomalous expansion associated? – Water


• What is a tick paste of cement, sand and water called? – Mortar


• Ethanol containing 5% water By which name is it known? – Rectified spirit


• Which is used to dilute oxygen in the gas cylinders used by divers? – Helium


• What do cathode rays caise when obstructed by metal? –emission of X-rays


• Which gase is supporter of combustion? – Oxygen


• On heating, Gypsum loses certain percentage of its water content and what does it become? – Plaster of Paris


• A liquid initially contracts when cooled down to 4 degree Celsius bu


• How must have metals used to make wires for safety fuses? – Low resistivity and low melting point


• Sodium stearate is a salt and how is it used? – To make soap


• Which are the two main constituents of granite? – Iron and silica


• Which method of water purification does not kill microorganism? – Filtration