Practice General science Common Questions and Answers

• Who is credited with inventing the microphone?
• A wire with green plastic covering is typically used as which type of wire?
• What is the focal length of a plane mirror?
• What defines an ion?
• What are diatoms?
• The rate of change of which of the following determines angular velocity?
• What do we call sound waves with frequencies below 20 Hz?
• Which inert gas is most abundantly found in the atmosphere?
• Vinegar, commonly used in cooking, is primarily composed of which acid?
• Which polymer is used in the production of bullet-proof materials?
• Among petroleum refinery products, which has the lowest boiling point?
• Which gas is commonly used in electric bulbs to prevent oxidation?
• What is the main chemical used in the production of matchsticks?
• What is used in cloud seeding to produce artificial rain?
• What is the principle behind the operation of a washing machine?
• Minamata disease, a neurological disorder, is caused by eating fish contaminated with which element?
• Which among following third generation of computers had ?
• The apparent weight of the body becomes zero in which of the following cases in the elevator?
• Speed of light will be maximum in which of the following mediums? 
• Which acid is described as HOOCCOOH?
• Which of the following is the correct term used to describe Graphite, Carbon and Diamonds?
• Which of the following elements have the lowest and highest boiling point in the Periodic table?
• Which of the following is NOT correct about the use of Quick lime?
• When diamond is heated at more than 1500 Degree Celsius in the absence of air, then it turns to………….?
• Which of the following method can be employed to test the Hardness of Water?
• During the fermentation of sugar, the compound which is always formed is…………?
• Which of the following process is involved in the manufacturing of iron from iron-ore?
• Which of the following gas is used in the preparation of the bleaching powder?
• Biogas which is used for cooking purpose is a mixture of which of the following two components?
• Which type of glass is used for making chemical apparatus like beakers, flasks etc.?
• Which of the following two chemical reactions are involved in the corrosion of the iron metal?
• Which of the following indicator produces a pink colour in an alkaline solution?
• Which of the following is treated with chlorine to obtain bleaching powder?
• Which property of iron metal is utilised in producing iron sheets required for making buckets?
• A sulphide ore is converted into metal oxide by which of the following process?
• Which of the following substance produces brisk effervescence when treated with baking-soda solution?
• According to Mendeleev’s Periodic law, the elements were arranged in the periodic table in the order of…………...?
• What is the name of the reaction in which acid reacts with base to form salt and water?
• Which of the following acid is found both in tomato and wood sorrel?
• Which of the following acid proves to be useful for the purification of gold and silver?