Vaigyanik khoj – Scientist discovery | प्रमुख अविष्कार और अविष्कारक

Vaigyanik khoj - Scientist discovery | प्रमुख अविष्कार और अविष्कारक

आविष्कार एवं खोज –Vaigyanik khoj – Scientist discovery | प्रमुख अविष्कार और अविष्कारक ,वैज्ञानिक खोज Scientific discovery Vaigyanik khoj – Scientist discovery   Worlds Famous Scientist and Discovery List (  Discovery -Scientist Name -Country and Year ) अविष्कार – अविष्कारक  -देश  -सन Airplane हवाई जहाज राइट बंधु, अमेरिका 1903 Air Break एयर ब्रेक जार्ज वाशिगटन … Read more Vaigyanik khoj – Scientist discovery | प्रमुख अविष्कार और अविष्कारक

Best Chemistry Quiz For Student : General Knowledge

Best Chemistry Quiz For Student : General Knowledge

General Knowledge : Best Chemistry Quiz For Student  General Knowledge   Q(1): Which is the largest stable atom ? [A] Bi [B] Al [C] U [D] Pb SHOW ANSWER [D] Pb ✔ Q(2):pH of a solution is 4, then OH concentration is  [A] 10 x 10–5 [B] 10–10   [C] 10–14   [D] 10–4   SHOW ANSWER … Read more Best Chemistry Quiz For Student : General Knowledge

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