रमन के दादा जी उसको बताते हैं कि आग की खोज मनुष्य की महान प्राप्ति थी। जिससे मनुष्य ने आग जलाना और भोजन पकाना सीखा। रमन के दादा जी आदि मानव के किस युग की बात कर रहे हैं ? *

ਪੁਰਾਤਨ ਪੱਥਰ ਯੁੱਗ ਦੀ /Paleolithic Period/ पुरातन पाषाण युग की
ਮੱਧ ਪੱਥਰ ਯੁੱਗ ਦੀ /Mesolithic period/ मध्य पाषाण युग की
ਨਵਾਂ ਪੱਥਰ ਯੁੱਗ ਦੀ/ Neolithic Period/ नवीन पाषाण युग की
ਇਨ੍ਹਾਂ ਵਿੱਚੋਂ ਕੋਈ ਨਹੀਂ /None of these/ इनमें से कोई नहीं
Answers
Answer:
German: [ˈalbɛʁt ˈʔaɪnʃtaɪn] (About this soundlisten); 14 March 1879 – 18 April 1955) was a German-born theoretical physicist[5] who developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).[3][6] His work is also known for its influence on the philosophy of science.[7][8] He is best known to the general public for his mass–energy equivalence formula E = mc2, which has been dubbed "the world's most famous equation".[9] He received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect",[10] a pivotal step in the development of quantum theory.
Albert Einstein
Einstein 1921 by F Schmutzer - restoration.jpg
Einstein in 1921
Born
14 March 1879
Ulm, Kingdom of Württemberg, German Empire
Died
18 April 1955 (aged 76)
Princeton, New Jersey, United States
Citizenship
Kingdom of Württemberg, part of the German Empire (1879–1896)[note 1]
Stateless (1896–1901)
Switzerland (1901–1955)
Austria, part of the Austro-Hungarian Empire (1911–1912)
Kingdom of Prussia, part of the German Empire (1914–1918)[note 1]
Free State of Prussia (Germany, 1918–1933)
United States (1940–1955)
Education
Federal Polytechnic School in Zurich (Federal teaching diploma, 1900)
University of Zurich (PhD, 1905)
Known for
General relativity
Special relativity
Photoelectric effect
E=mc2 (Mass–energy equivalence)
E=hf (Planck–Einstein relation)
Theory of Brownian motion
Einstein field equations
Bose–Einstein statistics
Bose–Einstein condensate
Gravitational wave
Cosmological constant
Unified field theory
EPR paradox
Ensemble interpretation
List of other concepts
Spouse(s)
Mileva Marić
(m. 1903; div. 1919)
Elsa Löwenthal
(m. 1919; died[1][2] 1936)
Children
"Lieserl" Einstein
Hans Albert Einstein
Eduard "Tete" Einstein
Awards
Barnard Medal (1920)
Nobel Prize in Physics (1921)
Matteucci Medal (1921)
ForMemRS (1921)[3]
Copley Medal (1925)[3]
Gold Medal of the Royal Astronomical Society (1926)
Max Planck Medal (1929)
Member of the National Academy of Sciences (1942)
Time Person of the Century (1999)
Answer:
ਸਾਨੀਆ ਦੇ ਸਾਇੰਸ ਅਧਿਆਪਕ ਨੇ ਉਸਨੂੰ ਦੱਸਿਆ ਕੀ ਇਕ ਅਜਿਹੀ ਧਾਤ ਵੀ ਹੈ ਜਿਸ ਨੂੰ ਖੁੱਲ੍ਹੀ ਹਵਾ ਵਿਚ ਰੱਖਦਿਆਂ ਹੀ ਉਸ ਨੂੰ ਅੱਗ ਲੱਗ ਜਾਂਦੀ ਹੈ | ਇਸ ਲਈ ਉਸ ਨੂੰ ਮਿੱਟੀ ਦੇ ਤੇਲ ਵਿੱਚ ਰੱਖਿਆ ਜਾਂਦਾ ਹੈ| ਉਸ ਧਾਤ ਦਾ ਨਾਮ ਕੀ ਨਾਮ ਹੈ? Sania's science teacher told her that there is a metal which catches fire when placed in open air. That's why this metal is stored in kerosene oil. Name that metal? सानिया के साईंस अध्यापक ने उसे बताया कि एक ऐसी धातु भी है जिसे खुली हवा में रखते ही उसे आग लग जाती है | इसलिए उसको मिट्टी के तेल में रखा जाता है| उस धातु का क्या नाम है? *
ਸੁਰਖੀ ਰਹਿਤ ਚਿੱਤਰ
ਸੋਡੀਅਮ / Sodium / सोडियम
ਮੈਗਨੀਸ਼ੀਅਮ / Magnesium/ मैग्नीशियम
ਐਲੂਮੀਨੀਅਮ / Aluminium/ एलुमिनियम
ਲੋਹਾ / Iron /लोह