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Consider the following pairs:
Which of the pairs given above is/are correctly matched?
- a)Only one pair
- b)Only two pairs
- c)None of the pair
- d)All the three pairs
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following pairs:Which of the pairs given above is/are cor...
The p-Block Elements comprise those belonging to Group 13 to 18 and these together with the s-Block Elements are called the Representative Elements or Main Group Elements.
At the end of each period in a periodic table is a noble gas element with a closed valence shell. All the orbitals in the valence shell of the noble gases are completely filled by electrons and it is very difficult to alter this stable arrangement by the addition or removal of electrons. The noble gases thus exhibit very low chemical reactivity.
Noble gases have uses that are derived from their other chemical properties. The very low boiling points and melting points of the noble gases make them useful in the study of matter at extremely low temperatures. Therefore often used for specific industrial processes.
At the end of each period in a periodic table is a noble gas element with a closed valence shell. All the orbitals in the valence shell of the noble gases are completely filled by electrons and it is very difficult to alter this stable arrangement by the addition or removal of electrons. The noble gases thus exhibit very low chemical reactivity.
Noble gases have uses that are derived from their other chemical properties. The very low boiling points and melting points of the noble gases make them useful in the study of matter at extremely low temperatures. Therefore often used for specific industrial processes.
- The low solubility of helium in fluids leads to its admixture with oxygen for breathing by deep-sea divers: because helium does not dissolve in the blood, it does not form bubbles upon decompression (as nitrogen does, leading to the condition known as decompression sickness, or the bends).
- Xenon has been used as an anesthetic; although it is costly, it is non-flammable and readily eliminated from the body.
- Radon is highly radioactive; its only uses have been those that exploit this property (e.g., radiation therapy). (Oganesson is also radioactive, but, since only a few atoms of this element have thus far been observed, its physical and chemical properties cannot be documented.).
- Krypton is used in fluorescent bulbs, flashbulbs, and lasers. Lamps filled with krypton are used at some airports as approach lights since their light can penetrate dense fog unusually well.
- Neon is also used as fog lights. Hence option (d) is the correct answer.
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Consider the following pairs:Which of the pairs given above is/are correctly matched?a)Only one pairb)Only two pairsc)None of the paird)All the three pairsCorrect answer is option 'D'. Can you explain this answer?
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Consider the following pairs:Which of the pairs given above is/are correctly matched?a)Only one pairb)Only two pairsc)None of the paird)All the three pairsCorrect answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following pairs:Which of the pairs given above is/are correctly matched?a)Only one pairb)Only two pairsc)None of the paird)All the three pairsCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following pairs:Which of the pairs given above is/are correctly matched?a)Only one pairb)Only two pairsc)None of the paird)All the three pairsCorrect answer is option 'D'. Can you explain this answer?.
Consider the following pairs:Which of the pairs given above is/are correctly matched?a)Only one pairb)Only two pairsc)None of the paird)All the three pairsCorrect answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following pairs:Which of the pairs given above is/are correctly matched?a)Only one pairb)Only two pairsc)None of the paird)All the three pairsCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following pairs:Which of the pairs given above is/are correctly matched?a)Only one pairb)Only two pairsc)None of the paird)All the three pairsCorrect answer is option 'D'. Can you explain this answer?.
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