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WorksheetsLANGUAGE OF CHEMISTRY MOCK -1
Total questions: 40
Worksheet time: 3585secs
I coined the term symbol of an element
John Dalton
John Mendel
Issac Newton
Berzelius
Following is true for chemistry
It deals with study of matter
It deals with constitution of matter
It deals with chemical changes matter undergoes
All of above
The following are statement true for symbol of an element
The symbol of element is derived from name of element either in English,German or Latin name.
The symbol of element has the first letter in Upper case.
The second letter (if any) is also in upper case.
The symbol of elements may comprise of either single or two letters only
The above picture represents the symbol proposed by
John Mendel
John Dalton
Johnny Deep
Johnson and Johnson
The chemical formula of Calcium phosphate is
Ca3(PO4)3
Ca3(PO4)2
Ca4(PO3)2
Ca2(PO4)3
The coefficients for the chemical reaction
NaHCO3 ----------> Na2CO3 +H2O +CO2
2,1,1,1
1,2,1,1
1,1,2,1
1,1,1,2
The valency of nitride radical is
(a)
The formula of Aluminium nitrate is
Al(NO3)2
Al(NO3)3
Al(NO3)
1.Calcium nitrate A.(NH4)CO3
2.Aluminium sulphide B.Ca(NO3)2
3.Ammonium carbonate C.Zn(NO2)2
4.Zinc nitrite D. Al2S3
1---B 2---D 3-----A 4----C
1----C 2---A 3----D 4----B
Following is true for balanced chemical equation
It provides information related to reactants and products
It provides information about number of atoms of reactants and products
It provides information about volumes of combining gases and products formed
All of above
The colored figures in the following equation represents
3Cu + 8HNO3 ---------> 3Cu(NO3)2 + 2NO + 4H2O
Coefficients
Numerical values
Frequency
Atomicity
When dilute hydrochloric acid reacts with limestone then the products are calcium chloride,water and carbon dioxide gas .The statement representing above chemical change is
CaCO3 +2HCl -------> CaCl2 +H2O + CO2
CaCO3 + HCl --------> CaCl2 + H2O + CO2
CAco3 + 2HCl ---------> CacL2 + H2o + CO2
2CaCO3 +4HCl -------> 2CaCl2 +2H2O + 2CO2
The percentage of calcium in calcium carbonate is
(Ca=40,O=16,C=12)
40%
48%
12%
None of above
The sum of the atomic weights of all the elements present in one molecule of compound is known as (a)
The cation present in the given salt is also known as (a)
The anion present in the given salt is also known as (a)
The common name for Copper sulphate is
Blue vitriol
White vitriol
Green vitriol
Non Of Above
The atomic weight of an atom is compared with mass of atom of (a)
The valency of carbon in carbon monoxide and carbon dioxide is
2 and 4
4 and 2
2 and 2
4 and 4
It the total number of electrons lost, gained or shared in order to complete duplet(2 electrons) or Octet (8electrons) in the valence shell of an atom of an element.
(a)
The atom of element with higher valency ends with
(a)
The representation of Ferrous ion in stock notation is
(a)
The representation of equation
Ammonium dichromate ------> Chromic oxide + Nitrogen + water vapour.
(NH4)2Cr2O7 --------> Cr2O3 + N2 + 4H2O
(NH4)2Cr2O7 --------> Cr2O4 + N2 + 3H2O
(NH4)2Cr2O7 --------> 2CrO3 + N2 + H2O
2(NH4)2Cr2O7 --------> Cr2O3 + 4N2 + 8H2O
The representation of the chemical reaction or chemical change with the help of symbols and formulae.
(a)
The equation in which the number of atoms on the left hand side may or may not be equal to the number of atoms on right hand side.
(a)
The balanced chemical equation is based on following law
Law of conservation of mass
Law of conservation of energy
Law of conservation of water
Law of conservation of solution
In a chemical reaction ,the double headed arrow represents
Irreversible reaction
Reversible reaction
Spontaneous reaction
Non spontaneous reaction
In Copper sulphate penta hydrate (CuSO4.5H2O) the 5 molecules of water are known as
Water of crystallization
Crystallisation of water
Hydrated salt
Anhydrous salt
Aqueous solution of ferrous sulphate reacts with sodium hydroxide to form Ferrous hydroxide and sodium sulphate. The statement represented symbolically
FeSO4 + 2NaOH --------> Fe(OH)2 + Na2SO4
FeSO4 + NaOH --------> Fe(OH)3 + Na2SO4
2FeSO4 + 3NaOH --------> Fe(OH)3 + Na2SO4
None of above
P4 represents the symbol of
An atom of phosphorus
An atom of potassium
A compound of phosphorus
A molecule of phosphorus
All chemical equations must be balanced so as to comply with
Law of definite proportion
Law of constant proportion
Law of conservation of mass
Law of identity
The correct formula of ammonium chloride is
AmCl
Am2Cl
NH4Cl
(NH4)2Cl
The formula Ca3(PO4)2 represents
A molecule of Calcium phosphate
A molecule of Calcium phosphide
While writing the chemical equation the reactants are written on (a) side
The valency of Iron in Fe2(SO4)3 is
+2
+3
+1
+4
Amongst the following ,the metal with varaible valency is
Copper
Zinc
Manganese
Tin
The gram molecular mass of Calcium nitride is (a) (Ca=40,N=14)
The percentage of hydrogen in Ethane (C2H6) is (a) (C=12,H=1)
The chemical name of Na2S2O3 is
(a)
The formula of two cholride of phosphorus are
PCl2 and PCl3
PCl3 and PCl4
PCl3 and PCl5
PCl and PCl5
