Chemistry In Everyday Life — Part 1 MCQs with Explanations

PVC stands for Polyvinyl chloride . It is a widely used thermoplastic material known for its high strength and versatility. It is commonly utilized in various applications such as pipes, medical devices, wire and cable insulation, among others.

Option A: Pyrex glass This glass is famous for being very strong and resistant to heat changes. You often find it in science labs for beakers and test tubes, or in kitchenware like oven dishes. It's great for heat, but not specifically designed for precise optical lenses. Option B: Soft glass This is the most common and cheapest type of glass, also known as soda-lime glass. It's used for everyday items like window panes, bottles, and jars. It's "soft" because it has a lower melting point and isn't very resistant to heat or strong chemicals. It's not suitable for optical instruments because it doesn't bend light in a precise way needed for clear images. Option C: Hard glass This is a general term, often referring to borosilicate glass (like Pyrex) or other glasses that are more resistant to heat and chemicals than soft glass. While it's tougher, it's not specifically formulated for the very particular light-bending properties required for high-quality optical lenses. Option D: Flint glass This is the correct answer ! Flint glass is a special type of glass that contains lead oxide. This addition gives it unique properties: * It has a high refractive index . This means it can bend light very strongly. This is super important for making lenses that focus light accurately and create clear, magnified images in instruments like microscopes and telescopes. * It also has high dispersion, which means it can split white light into its different colors effectively. This property, combined with another type of glass called crown glass, helps in correcting color distortions in lenses, making images even clearer. So, when you need glass for making precise lenses for telescopes, cameras, or microscopes, Flint glass is the best choice because of its excellent ability to bend and control light.

sunhemp is the correct answer to “The most suitable crop for green manuring is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

detergents give lather even with hard water is the correct answer to “The advantage of detergents over soaps is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

1, 3 and 4 is the correct answer to “Consider the following features of newer models of motor cars. 1. Radial tyres 2. Streamlined body 3. Multipoint fuel injection 4. Catalytic converter with exhaust Which of these features make the new models of motor cars more fuel efficient”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

formaldehyde is the correct answer to “Bakelite is a co-polymer of phenol and”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

peroxyacetyl nitrate is the correct answer to “A powerful eye irritant present smog is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Soda glass is harder than pyrex glass is the correct answer to “Which one of the following statements about glass is not correct”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Soaps are relatively stronger in their cleaning action than synthetic detergents is the correct answer to “Which of the following statements is not true for soap”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

emulsification is the correct answer to “Soap, removes grease by”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Hydride is the correct answer to “Hydrogen gas can be conveniently used as a fuel for running vehicles if it is absorbed at very low temperature by a substance only to be released at the temperature generated by the exhaust. What is that substance found in India”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Ammonium nitrate is the correct answer to “Which of the following is not the main nitrogenous waste in humans”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Urea is the correct answer to “Extensively used nitrogenous fertiliser is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Silicon is the correct answer to “Which one of the following elements is least likely to be found in commercial fertilisers”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Sulphur is the correct answer to “Which of the following is used in beauty parlours for hair setting”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Urea is the correct answer to “Which of the following fertilisers has more nitrogen content”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

to oxidise the dye to give desired colour is the correct answer to “The hair dye available in the market contains two bottles, one containing dye and other containing hydrogen peroxide. The bottles are mixed before applying the dye. The function of hydrogen peroxide is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

calcium hydroxide is the correct answer to “Antacids are commonly used to get rid of acidity in the stomach. A commonly used antacid is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Hydrogen is the correct answer to “The element not present in fertilisers is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Borax is the correct answer to “Which of the following is responsible for the extra strength of pyrex glass”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Vegetable oil is the correct answer to “Which one of the following is used in the manufacture of soaps”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

butane and propane is the correct answer to “LPG is a mixture of”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

sand, Soda, limestone is the correct answer to “Raw materials used for the manufacturing of glass are”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Henning is the correct answer to “RDX was invented by”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Ethyl mercaptan is the correct answer to “The stench due to leakage from LPG cylinder is because of”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

47% is the correct answer to “The percentage of nitrogen in urea is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

chlorine over slaked lime is the correct answer to “Bleaching powder is prepared by passing”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

protein is the correct answer to “Silk fibre chemically is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

acetyl salicylic acid is the correct answer to “Aspirin is common name of”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Option "supercooled liquid" is the correct answer for this question under Chemistry In Everyday Life.

antipyretic is the correct answer to “The drug used to bring down fever are known as”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

methyl alcohol and H2O is the correct answer to “Substance used as an anti-freeze in radiators of automobiles is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

stone formation in kidey is the correct answer to “One of the occupational health hazards commonly faced by the workers of ceramic, pottery of glass industries is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Natural gas is the correct answer to “Which of the following is an example of fossil fuel”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

sodium salts of sulphonic acids is the correct answer to “Detergents are”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

Syphills is the correct answer to “Arsenic drugs are mainly used in the treatment of”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

thyroid function is the correct answer to “lodised salt is beneficial for”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

calcium chlorohypochlorite is the correct answer to “Chemical name of bleaching powder is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

acetylsalicylic acid is the correct answer to “Aspirin is chemically known as”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.

sulphur is the correct answer to “The substance that is added to make natural rubber strong and more bouncy is”. This question is standard in competitive examination syllabi for Chemistry In Everyday Life.