General Science Questions

• Galvanised iron sheets have a coating of
• Washing soda is the common name for
• Marsh gas is
• In fireworks, the green flame is produced because of
• The element common to all acids is
• The average salinity of sea water is
• What is laughing gas?
• Which of the following is a non metal that remains liquid at room temperature?
• Potassium nitrate is used in
• The two elements that are frequently used for making transistors are
• The most important ore of aluminium is
• Chemical formula for water is
• When an iron nail gets rusted, iron oxide is formed
• Which of the following is the lightest metal?
• Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?
• The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
• Which of the gas is not known as green house gas?
• The gases used in different types of welding would include
• The variety of coal in which the deposit contains recognisable traces of the original plant material is
• In which of the following activities silicon carbide is used?