RAILWAY GROUP D ASKED QUESTION
🔥🔥RAILWAY GROUP -D ASKED QUESTION🔥🔥
🔰SCIENCE
✅️Valency of Halogen Group? – 1
✅️Which is the inert gas in the fourth period?Kr
✅️Largest joint of body= Knee
✅️Valency of nitrogen ? – 3
✅️Scientific name of Apple? – Malus
✅️Scientific name of Elephant? – Loxodonta
✅️What will be the electro-negativity on moving left to right in the Periodic table? Increase
✅️King of Acid – H2SO4
✅️What is the chemical name of CaO? – Calcium oxide
✅️What is the chemical name of H2SO4? – Sulfuric acid
✅️Male Chromosomes are represented by? – 44+XY / 22+XY
✅️Period that does not Contain any Metalloids? – 1st Period and 7th Period
✅️Which acid is present in Lemon? – Citric Acid
✅️4th Period has how many elements? – 18 elements
✅️Ethanoic acid has which group? -COOH
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