Common science questions for basic knowledge –
Common science questions for basic knowledge –
1 • what is the name of reaction between an Acid and a base is .
Answer. Neutralisation or Neutralization .
2 • What is Oxidation .
2 • What is Oxidation .
Answer. the loss of electrons know as a oxidation and Reduction is the gain of electrons
3 • Which is The most conductive metal .
Answer. Silver
4 • What is Hydropower .
Answer. In this process Hydropower create energy From the action of falling water , as water falls from a height the energy is used to turn turbines which create a electricity .
5 • What is Solar energy –
Answer. Energy produced by sun is called solar energy . the sun radiation trapped in solar panels then is turn into electricity .
6 • The First Three Alkanes are –
Answer. Methane ( Ch4 )
Ethane ( Ch3Ch3 )
Propane ( Ch3Ch2Ch3 )
7 • What is chemical bond –
Answer. the physical process where atoms and molecules to be attracted together then bound in new compounds is called chemical bond
8 • When acid rain occurs –
Answer. Acid rain occurs When Sulphur dioxide and nitrogen dioxide are emitted in to air .
9 • what is Atomic mass number –
Answer. Symbol of atomic mass number is ( A ) , it is the total number of protons and neutrons in the nucleus of an atom .
10 • what is atomic number –
Answer. Symbol of atomic number is ( Z ) , it is the number of protons in atom .
11 • Molar mass –
Answer. Molar mass ( M ) is the mass of one mole a chemical substance . unit of molar mass is gm/mole
12 • Fundamental units are there in SI System –
Answer. 7 ( seven ) , fundamental units in SI system .
13 • Fundamental particles of atom –
Answer. Electron , proton and neutron .
14 • Formula of neutrons –
Number of neutrons = mass number – atomic number present in elements .
15 • Formula of atomic weight –
Atomic weight = no . of protons + no . of neutrons .
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