01- Nuclear fusion produces energy in the sun.
02- U-235 and U-239 make nuclear bombs.
03- The first iron metal, then the copper metal and later the metal used for bronze.
04- The city center associated with iron-state culture is Ahikchatra Varanasi, Kausambi, Srivasti and Ujjain.
05- According to the information received by Radiocarbon method, India’s oldest agricultural settlement was Mehrgarh. Which is presently in Balochistan.
06- Mohanjodado’s large bathhouse is the most important. Its length is 39 feet x wide 23 feet x depth is 08 feet.
07- By combining copper and zinc, brass is formed.
08- German silver is formed by combining copper, zinc and nickel.
09- Mixing copper and tin together makes bronze.
10- The childhood name of Gautama Buddha was Siddhartha.
11- Gautam Buddha was born in 563 BC in Lumbini (Nepal).
12- The residence of Gautam Buddha was known as Mahabinisvashan.
13- Gautam Buddha gave the first sermon in Sarnath.
14- Cobalt (Co-60) is used in the treatment of cancer.
15-I-131 is used in the treatment of thyroid cancer.
16- Sanchi Stupa is in Raisen district of Madhya Pradesh.
17- Chinese passenger Fahman came to India during the Maurya period.
18- Kautilya composed a book called economics.
19- The airplane flies in the stratosphere of the atmosphere.
20- Oxygen gas is helpful in burning.