chemistry Chemistry in Everyday life Test 11 Welcome to your chemistry Chemistry in Everyday life Test 11 Name Email 1.Which of the following household items contains sulphuric acid? (a) Toothpaste (b) Vinegar (c) Battery (d) Butter None 2. Which of the following is used as a preservative? (a) Magnesium Silicate (b) Sodium Palmitate (c) Dipropylene Glycol (d) Sodium Chloride None 3. Whitewashed walls appear to be shiny after three to four days due to the formation of: (a) calcium nitrate (b) calcium sulphate (c) calcium oxide (d) calcium carbonate None 4.Which one of the following is the primary component of natural gas? (a) Helium (b) Carbon Dioxide (c) Nitrogen (d) Methane None 5.Which of the following gases is used in electric bulbs? (a) Halogen (b) Nitrogen (c) Carbon dioxide (d) Hydrogen None 6.Which of the following elements can be used to treat/purify water? (a) Potassium (b) Magnesium (c) Chlorine (d) Lead None 7. Which of the following processes converts liquid directly into its vapour form? (a) Evaporation (b) Sublimation (c) Condensation (d) Vaporisation None 8.Complete the statement: Sodium hydrogen carbonate is used ______. (a) for removing permanent hardness of water (b) as a cleaning agent for domestic purposes (c) in soda-acid fire extinguishers (d) in the manufacture of borax None 9.Which of the following is one of the main active sulphur-containing compounds present in garlic and onion? (a) Allicin (b) Cellulose (c) Ethanol (d) Phenol None 10. Synthetic fibres catch fire easily. However, the uniforms of firemen have a coating of ______ plastic to make them flame resistant. (a) nylon (b) melamine (c) acrylic (d) rayon None 11. A wooden bat can be classified as a/an ______ object. (a) translucent (b) opaque (c) lustrous (d) transparent None 12. Due to which of the following reactions are household bleaching agents using phosphorous, sulphur and chlorine formed? (a) Decomposition reaction (b) Displacement reaction (c) Combination reaction (d) Disproportionation reaction None 13.Which among the following is used as the fining agent in wine? (a) Gelatin (b) Chlorine (c) Sodium (d) Baking Soda None 14.Which chemical reaction takes place during the cooking of meat? (a) The Finkelstein reaction (b) The Swartz reaction (c) The Gattermann reaction (d) The Maillard reaction None 15.Which of the following is responsible for producing green light in fireworks? (a) Potassium (b) Barium (c) Silicon (d) Sodium None 16.______ is generally called as milk sugar as it is found in milk. (a) Glucose (b) Fructose (c) Maltose (d) Lactose None 17.Which of the following minerals produces green color in fireworks? (a) Barium (b) Sodium (c) Copper (d) Zinc None 18. Which of the following acids is used in the purification of gold and silver? (a) Maleic acid (b) Formic acid (c) Acetic acid (d) Nitric acid None 19.When we cut an onion, the vegetable emits an odour and our eyes tear up. Which of the following compounds is responsible for the tears and odour resulting from freshly cut onions? (a) Citric acid (b) Ascorbic acid (c) Acetic acid (d) Sulphuric acid None 20. Which of the following is NOT used to make toothpaste? (a) Silica (b) Limestone (c) Aluminium Oxide (d) Galen None 21. Which of the following is a process in which hot, less dense materials rise upward and are replaced by colder, more dense materials? (a) Condensation (b) Radiation (c) Conduction (d) Convection None 22. Oxalic Acid Is Found In- (a) Myrobalan (b) Tamarind (c) Lemon (d) Spinach None 23.Which of the following is an inert gas most commonly found in light bulbs? (a)Argon (b)Hydrogen (c)Oxygen (d)Radon None 24.In which of the following is citric acid present? (a)Lemon (b)Tamarind (c)Black Gram (d)Curd None 25.Ozone at the higher level of the atmosphere is a product of ______ acting on oxygen molecules. (a) UV radiation (b) gamma rays (c) IR radiation (d) x-rays None Time's up
