|
|
| 1. |
He laid the foundation of language of Chemistry
|
|
|
|
Albert Eintsetin
|
|
|
J.J.Berzelius
|
|
|
Grahm Bell
|
|
|
William James
|
|
|
|
Answer : J.J.Berzelius
|
|
|
| 2. |
A symbol is an abbreviation of the name of
|
|
|
|
Element
|
|
|
Formula
|
|
|
Chemical Reaction
|
|
|
Compond
|
|
|
|
Answer : Element
|
|
|
| 3. |
An atom is represented by
|
|
|
|
Formula
|
|
|
Chemical Equation
|
|
|
Symbol
|
|
|
Compound
|
|
|
|
Answer : Symbol
|
|
|
| 4. |
The symbol of Gold is represented by
|
|
|
|
Au
|
|
|
Ag
|
|
|
Gd
|
|
|
Hg
|
|
|
|
Answer : Au
|
|
|
| 5. |
Symbol of elements are derived in following ways
|
|
|
|
First letter of English Name of the Element
|
|
|
First and one more letter of the English Name of Element
|
|
|
One or Two letters of Latin Name of the Element
|
|
|
All of Above
|
|
|
|
Answer : All of Above
|
|
|
| 6. |
Molecule is represented by
|
|
|
|
Symbol
|
|
|
Formula
|
|
|
Element
|
|
|
None of Above
|
|
|
|
Answer : Formula
|
|
|
| 7. |
Chemical change is represented by
|
|
|
|
Formula
|
|
|
Symbol
|
|
|
Chemical Equation
|
|
|
Mathematical Equation
|
|
|
|
Answer : Chemical Equation
|
|
|
| 8. |
Neon is represented by
|
|
|
|
N
|
|
|
Ne
|
|
|
Na
|
|
|
Ni
|
|
|
|
Answer : Ne
|
|
|
| 9. |
Formula of a molecule is made of _____________ elements
|
|
|
|
Same
|
|
|
Different
|
|
|
Same or Different
|
|
|
Many
|
|
|
|
Answer : Same or Different
|
|
|
| 10. |
Following is an example of Triatomic Element
|
|
|
|
Ozone
|
|
|
Hydrogen
|
|
|
Chlorine
|
|
|
Water
|
|
|
|
Answer : Ozone
|
|
|
| 11. |
Noble gases are inactive gases present in air and the examples are
|
|
|
|
He, Xe
|
|
|
Ne, Kr
|
|
|
Ar, He
|
|
|
All of above
|
|
|
|
Answer : All of above
|
|
|
| 12. |
The capacity of an element to combine with other elements is known as its
|
|
|
|
Affinity
|
|
|
Valency
|
|
|
Reaction
|
|
|
Magnetism
|
|
|
|
Answer : Valency
|
|
|
| 13. |
Cu, Fe, S, P,Sn, Pb are examples of elements which have ________ valency.
|
|
|
|
Fixed
|
|
|
Variable
|
|
|
Semi Variable
|
|
|
None of Above
|
|
|
|
Answer : Variable
|
|
|
| 14. |
Group of atoms of different elements remain intact. These behave like single atom and have a Valency. These are called
|
|
|
|
Compound
|
|
|
Formula
|
|
|
Compound Radical
|
|
|
Chemical Reaction
|
|
|
|
Answer : Compound Radical
|
|
|
| 15. |
Symbol represents
|
|
|
|
An Element
|
|
|
An atom of Element
|
|
|
Both of Above
|
|
|
None of Above
|
|
|
|
Answer : Both of Above
|
|
|
| 16. |
Silver is represented by the symbol
|
|
|
|
Au
|
|
|
Hg
|
|
|
Ag
|
|
|
Mg
|
|
|
|
Answer : Ag
|
|
|
| 17. |
Diatomic Molecule is made of two atoms of the element and following is not an example of diatomic molecule.
|
|
|
|
Argon
|
|
|
Oxygen
|
|
|
Nitrogen
|
|
|
Bromine
|
|
|
|
Answer : Argon
|
|
|
| 18. |
In a Balanced Chemical Equation
|
|
|
|
Reactants and Products are opposite side
|
|
|
No of atoms of each element are same for reactant & products
|
|
|
Both of Above
|
|
|
None of Above
|
|
|
|
Answer : Both of Above
|
|
|
| 19. |
Hydroxide, Carbonate, Sulphate and hydroxide are examples of
|
|
|
|
Compond Radicals
|
|
|
Compounds
|
|
|
Elements
|
|
|
Formulas
|
|
|
|
Answer : Compond Radicals
|
|
|
| 20. |
Chemical Equation represents
|
|
|
|
Mechanical Change
|
|
|
Mathematical Formula
|
|
|
Chemical Change
|
|
|
Physical Change
|
|
|
|
Answer : Chemical Change
|
|
|
|
|
