Science, asked by lzsaleem432, 2 months ago

practice questions sci class 9​

Answers

Answered by sharmameena06549
2

Answer:

Who discovered the frist vaccine and name of the virus from which that vaccine developed and the name of the disease

Who discovered the frist antibiotic and name of that antibiotic

Explain the Thomson model of atom

Explain the Rutherford gold foil experiment

Write the postulates of Dalton atomic theory

Derive of Kinectic energy and potential energy

Explain the Bohrs model of atom with diagram

Calculate the molecular mass of Nacl and H2O

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