Important Chemistry GK || Chemistry GK Questions And Answers in English
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Important Chemistry GK || Chemistry GK Questions And Answers in English
1. What is the smallest possible unit of a chemical compound ?
a) Molecule
b) Proton
c) Electron
d) Atom
2. The number of negative charges in an atom is equal to-
a) Atomic weight
b) Electron
c) Neutrons
d) None of these
3. What is the unit of Atomic Mass ?
a) Gram
b) Kg
c) Amu
d) None of these
4. How many neutron will be there in the nucleus of sodium ?
a) 11
b) 12
c) 13
d) 34
5. Which of the following is whole number ?
a) Atomic mass
b) Atomic number
c) Atomic volume
d) Atomic radius
6. The element with highest electrical conductivity is-
a) Gold
b) Silver
c) Copper
d) Mercury
7. Which is the most powerful oxidizing agent among the following ?
a) I₂
b) F₂
c) Br₂
d) Cl₂
8. Number of isotopes of Hydrogen is-
a) 1
b) 2
c) 3
d) 4
9. The Newton was discovered by-
a) Rutherford
b) Mosely
c) Avogadro
d) Chadwick
10. Symbol of Tin is-
a) Pb
b) Tn
c) Ti
d) Sn
11. Neutron can be found in atom of all elements except-
a) Carbon
b) Helium
c) Hydrogen
d) Neon
12. The smallest particle in which matter can exist is called ?
a) an ion
b) an atom
c) a molecule
d) an element
13. Water can exist in-
a) solid
b) Liquid
c) gas
d) all in
14. The nucleus of an atom contains-
a) neutrons
b) protons
c) Protons and neutrons
d) electrons
15. The atomic weight of an atom is due to-
a) protons
b) neutrons
c) protons and neutrons
d) electrons and protons
16. Atomic number of an element is equal to the number of-
a) neutrons
b) protons
c) electrons
d) proton and neutrons
17. An Proton carries-
a) a unit positive charge
b) neutral
c) a unit negative charge
d) two units of positive charge
18. The atomic weight of water is-
a) 16
b) 2
c) 18
d) 20
19. Which of the following is not an element ?
a) Water
b) Aluminium
c) Mercury
d) Gold
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