Q1. Famous scientists born from the 17th to 18th centuries.
Ans:
- André-Marie Ampère 1775 – 1836.
- Mary Anning 1799 – 1847.
- Amedeo Avogadro 1776 – 1856.
- Elizabeth Blackwell 1821 – 1910.
- Robert Bunsen 1811 – 1899.
- John Dalton 1766 – 1844.
- Charles Darwin 1809 – 1882.
- Michael Faraday 1791 – 1867.
- Carl Friedrich Gauss 1777 – 1855.
- Irene Joliot-Curie 1897 – 1956.
- Antoine Lavoisier 1743 – 1794.
- James Clerk Maxwell 1831 – 1879.
- Dmitri Mendeleev 1834 – 1907.
- Alfred Nobel 1833 – 1896.
- James Watt 1736 – 1819.
Q2. The scientist who discovered water.
Ans: Despite the water crisis, its chemical structure did not emerge until the late 18th century, because it had to wait for the discovery of compounds, hydrogen (discovered by Henry Cavendish in 1766) and oxygen (discovered by Joseph Priestley in 1774).
Armed with this new information, Cavendish burned a moderate amount of these 2 gases and found that the only reaction product was water.
Antoine Lavoisier then confirmed this by deciding to return water to H2 and O2, and finally in 1871 Cannizzaro invented the H2O formula.
Q3. Deficiency in humans for dengue fever.
Ans: Zinc deficiency is the majority deficiency for causing dengue fever.
you can refer the paper published by Lakkana Rerksuppaphol and Sanguansak Rerksuppaphol in https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6397992/
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