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reactive

/riˈæktɪv/adjective

उच्चारण रिऐक्टिव

प्रतिक्रियाशील, घटना होने के बाद कार्य करने वाला

Advanced wordPYP · asked 3 times

Asked in previous papers

as synonym

SSC CHSL Pre 2025SSC MTS 2023SSC MTS 2021
adjective
  1. 1

    reacting to events or situations rather than acting first to change or prevent something

    प्रतिक्रियाशील, घटना होने के बाद कार्य करने वाला

    • The police were criticized for being reactive rather than preventing crime.
    • A reactive approach to floods wastes time; cities need plans before the rains.
    • The company's reactive policy meant it only acted after customers complained.
    + 2 more examples
    • A reactive government waits for a crisis; a good one plans ahead.
    • Being reactive in your studies means revising only when the exam is near.

    Synonyms responsive

    Opposite proactive preventive anticipatory

  2. 2

    chemistry

    tending to show chemical change when mixed with another substance

    (रसायन में) अभिक्रियाशील

    • Sodium is a highly reactive metal.
    • Potassium is so reactive that it is stored under oil in the laboratory.
    • Sodium is highly reactive and bursts into flame in water.
    + 2 more examples
    • The science teacher explained which metals are reactive and which are not.
    • Chlorine is a reactive gas and must be handled with care.

    Opposite inert unreactive stable

◇Word family
react verbreaction noun
≈Synonyms and antonyms
AaSpelling

re·ac·tive

?Which word?

Keep apart reactive (responding after events) and proactive (preparing before events).

Reactive (घटनाओं के बाद प्रतिक्रिया) और proactive (घटनाओं से पहले तैयारी) को अलग रखिए।

✓In the exam

General knowledge

Science: highly reactive metals such as sodium and potassium are stored in kerosene; noble gases such as helium and neon are inert (unreactive).

विज्ञान में अत्यधिक reactive धातुएँ जैसे सोडियम और पोटैशियम मिट्टी के तेल में रखी जाती हैं; noble gases जैसे हीलियम और नियॉन inert (अक्रियाशील) हैं।