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SCIENCE AND TECHNOLOGY
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 Aqua regia, literally 'king's water', is a yellow-orange fuming liquid. It was so named by alchemists because it could dissolve the noble metals, gold and platinum. What does it consist of?
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 It is a thermosetting plastic which is used in making good quality table wares. It is fire-resistant material so, also used as a coating on firemen uniforms. What is it?
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Which of the following is based on the principle of formation of many images by mirrors placed at fixed angles to each other?
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Which of these metals is used in electroplating, a process that involves coating an object with a rust-proof substance?
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 Which of these elements is needed to make nuclear energy and nuclear weapons?
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Sound waves that cannot be heard by the human ear are aimed at the body. The organs reflect them back giving a three-dimensional image that can be studied on a monitor. What is this form of imaging called?
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Alexander Graham Bell is credited with patenting the first practical telephone. Many other inventions marked Bell?s later life, including groundbreaking work In which of the following?
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The area around the equator is of intense low pressure where the prevailing winds are calm, particularly in the Atlantic and Pacific Oceans. Indeed, the term has a nautical history. What is it called colloquially?
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Fructose, raff nose, mannose and dextrose are different forms of
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Distances in space cannot be measured using conventional measures such as kilometres and knots. Which of these is a unit of distance used to measure large distances of objects outside the solar system?
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This element exists as liquid at room temperature. It is a metal used in thermometers, barometers, fluorescent lamps; etc. it is commonly known as quicksilver. Which element is this?
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Which of these chemical elements is the most abundant in our universe?
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Gunpowder is the earliest known chemical explosive. It was invented in the 9th century in China. Gunpowder is a mixture of
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What are Java, Perl and Fortran?
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 In nature, this simple organic acid is found in the sting of many in sects, particularly ants after which it is named. What is it called?
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The first process of photography produced a highly detailed permanent photograph on a silver-plated sheet of copper. It was developed by a Frenchman after whom it was named in 1839. What was this called?
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 Fill in the blank with the correct option. Gravitational force acts between _____.
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The process by which a solid changes to gas without becoming a liquid Is called
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This chemical has a strong sharp smell and is used in nail polish removers. What is this substance?
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This painless medical process makes use of computer-processed combinations of many X-ray images taken from different angles to produce cross-sectional (virtual "slices") of specific areas of a scanned object, allowing the user to see inside the object without cutting. What is it called?
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