Metals and Non-Metals Metals and Non-metals 1 / 10 ____ is used in electrodes, _______ is used in welding metals, ______ is used to make antiseptic creams while _____ is used as a preservative due to its inert nature. Phosphorus, sulphur, oxygen, carbon Graphite, hydrogen, sulphur, nitrogen Hydrogen, oxygen, chlorine, bromine Carbon, hydrogen, chlorine, phosphorus 2 / 10 What happens when a brown copper wire is placed in colorless silver nitrate solution? Colour of solution turned green and copper wire turned blue. Colour of solution became silver and there was no change in the colour of copper wire The colour of the solution turned blue and precipitate of solid silver was formed. There was no change in the colour of solution or colour of the wire 3 / 10 Which of the following properties are shown by non-metals?(i) Form acidic oxides(ii) Produce sound on hitting(iii)Brittle(iv) Low density(v) High tensile strength (i), (iii), and (iv) only (ii), (iii), and (v) only (i), (iv), and (v) only All of these 4 / 10 A metal when placed in copper sulphate solution, red-brown pieces of copper fall to the bottom of the test tube. When it is placed in aluminium sulphate solution, no change is observed. The metal is Silver Gold Sodium Iron 5 / 10 Magnesium ribbon on heating in air catches fire and burns with white flame to form magnesium oxide. True False 6 / 10 All metals react with water to evolve hydrogen gas. True False 7 / 10 Substance A reacts with dilute HCl violently, B reacts slowly and C does not react at all. A, B, and C could be Cu, Al and Fe respectively Na, Cu and Fe respectively K, Al and Cu respectively Al, Na and Cu respectively 8 / 10 Vapors of a burning substance are collected in a test tube, making sure that they do not escape. A small amount of water is added to the test tube. To the solution obtained, a few drops of blue litmus solution are added. The litmus solution turns red. Which of the following could be the burning substance? Mg Na S Fe 9 / 10 Which of the following statements is incorrect? Gold and silver are the most malleable and ductile metals. All metals are hard and strong. Mercury and gallium are metals which exist in liquid state at room temperature. Most of the metals have high specific gravities. 10 / 10 Single or multiple choiceSodium metal is kept immersed in kerosene oil because It is a very reactive metal A lot of heat is evolved when sodium reacts with water It can even react with moisture present in air violently None of the above Your score isThe average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
