LANGUAGE OF CHEMISTRY Flashcards
A pure substance can only be
a.Element
b.Compound
c.Element and Compound
d.Mixture
c.Element and compound
A pure substance which contains only one types of atom is called
a.A compound
b.An element
c.Solid
d.Liquid
b.element
The father of Chemistry is
a.Priestley
b.lavoiser
c.Dalton
d.Mendeleev
b.Lavoiser
What is the symbol of Tungsten?
a.Au
b.Sb
c.Ti
d.W
d.W
What is the symbol of Tin?
a.Sn
b.Sb
c.W
d.Pb
a.Sn
What is the Latin name of mercury?
a.Hydrogyrum
b.Argentum
c.Stannum
d.Wolfram
a.Hydrogyrum
A symbol not only represents the name of the element but also it’s:
a.Atomic number
b.Atomic mass
c.Atomicity
d.Atomic volume
c.Atomicity (no.of atom in molecule of elements)
Hydrogyrum is Latin name of element
a.Mercury
b.Lead
c.Hydrogen
d.Oxygen
a.Mercury
The metal which doesn’t exist in solid state is
a.Iron
b.Lead
c.Mercury
d.Sodium
c.Mercury
Metal are characterized by
a.mallaeble and ductile
b.High melting point and high boiling point
c.Good conductor
d.all of these
D.all of these
Most metals are
a.noble
b.electropositive
c.electronegative
d.b or c
b.electropositive
Non-metal can exist in
a.solid
b.liquid
c.gaseous state
d.all are correct
d.all of these
Note:-
Metal cannot exist in gaseous state
Non metal that conduct electricity
a.white phosphorus
b.graphite
c.black phosphorus
d.both b and c
D.both b and c
Which one of the following are metalloid?
a.Au
b.As
c.Ag
d.Pt
b.As
Compounds obtained from living source.
a.inorganic subs
b.organic subs
c.non-organic subs
d.all
b.organic substance
Which is not an organic compound
a.oil
b.enzyme
c.washing soda
d.vitamins
c.washing soda
Air is
a.homogenous mixture
b.heterogenous mixture
c.both
d.None
a.homogenous mixture
Mixture of gases at separated by method
a.Dialysis
b.Ultra filtration
c.Atomolysis
d.Diffusion
c.Atomolysis
The reaction Zn+H²SO⁴——>ZnSO⁴+H²⬆️ is an example of
a.Displacement rxn
b.Combustion rxn
c. Decomposition rxn
d.Polymerization rxn
a.Displacement rxn
A photochemical reaction ________light
a.convery heat into
b.accompanied with the emissionpf
c.catayzed by
d.initiated by
d.initiated by ( यो चाहिन्छ)
The term ‘atom ‘was first introduced by
a.Thomson
b.Dalton
c.Stoney
d.Avogadro
b.Dalton
The total no.of element occuring naturally are:-
a.92
b.107
c.115
d.123
a.92
Which one exist in free state
a.Na
b.Zn
c.Ca
d.Au
d.Au
The 2nd most abundant element on Earth crust
a.Oxygen
b.Silicon
c.Al
d.Iron
b.Silicon
How many protons,electrons and neutrons are present in the element?
X⁴³?
²²
a.22,21,21
b.21,21,22
c.22,22,22
d.22,21,22
b.21,21,22
22=e=p+=z
The species having same atomic number but different mass number is
a.Isotopes
b.Isotones
c.Isobar
d.Isodiapher
a.Isotopes
🧠Note🧠
Isotopes:-
Same atomic number different atomic mass
Eg.1H¹,1 H², 1H³
Isotones
Elements with same no.of neutrons but different no.of protons
Isobar
Elements with same mass number but different atomic number
eg.18 Ar⁴⁰,19 K⁴⁰,20 Ca⁴⁰
The no.of fundamental particles in an atom of the lightest isotope carbon are :-
a.6
b.12
c.18
d.24
c.18
*12 C⁶
Na+ is isoelectronic with
a.Ca2+
b.Mg2+
c.Zn2+
d.Cu2+
b.Mg2+
The fractional atomic weight of an element is because:-
a.existence of allotropic form
b.equivalent no.are whole number
c.of existence of isotope
d.valency of element has fractional value
c.of existence of isotope
Isobar have same no.of
a.electron
b.protons
c.neutrons
d.Nucleons
d.Nucleons
Sum of protons and neutrons
What kind of reaction occurs in the reaction
CH⁴+O²➡️CO²+H²O
a.reduction
b.combustion
c.Single displacement
d.Double displacement
b.Combustion
oxygen aayera
The compound having same molecular formula but possess different properties are known as:-
a.Isotopes
b.Isomers
c.Isobar
d.Isochores
b.Isomers
NH⁴CNO➡️NH²CONH²
This reaction is called
a.Elimination
b.substitution
c. rearrangement
d. Condensation
c. Rearrangement
No.of electron present in CO² is:-
a.22
b.44
c.11
d.24
a.22
Radius of an atomic nucleus is in the order of
a.10-⁸cm
b.10-¹⁰cm
c.10-¹²cm
d.10-¹⁵cm
c.10-¹²cm
Another answer
10-¹⁰m
The no.of electrons in an atom is equal to:-
a.Atomic weight
b.Equivalent weight
c.Atomic number
d.Electron Affinity
c.Atomic number
Crystallization is based on difference in their
a.BP
b.Solubility
c.MP
d.Crystal Structure
b.Solubility
