Question : Now-a days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps?
Option 1: Sodium
Option 2: Neon
Option 3: Hydrogen
Option 4: Nitrogen
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Correct Answer: Sodium
Solution : The correct option is Sodium.
Yellow street lights are frequently made of high-pressure sodium (HPS) or low-pressure sodium (LPS) bulbs. This lamp emits a characteristic yellow or orange-yellow light. When energised by an electric current, sodium vapour creates a primarily yellow-orange light, which is utilised in low-pressure sodium lamps (LPS). Because of its energy efficiency and extended lifespan, sodium vapour lamp technology is a popular choice for street lighting in many places.
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Question : Baking soda is ________________.
Option 1: sodium carbonate
Option 2: sodium sulphate
Option 3: sodium hydrogen carbonate
Option 4: sodium hydroxide
Question : Which of the following is used in photography?
Option 1: Sodium bicarbonate
Option 2: Sodium thiosulphate
Option 3: Sodium hydroxide
Option 4: Sodium sulphate
Question : The mercury and sodium street lamps light up because of:
Option 1: Atomic emission
Option 2: Atomic absorption
Option 3: Electron emission
Option 4: Electron absorption
Question : Which of the following gases is known as "laughing gas"?
Option 1: Nitrous oxide
Option 2: Nitrogen peroxide
Option 3: Nitrogen
Option 4: Nitric oxide
Question : The gas used for filling weather balloons is
Option 1: Helium
Option 2: Hydrogen
Option 3: Air
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