Font size
WorksheetsChemistry test
Total questions: 29
Worksheet time: 30mins
What shows the results of a chemical change?
Chemical bond
Chemical reaction
Chemical combination
Chemical equation
[Zn(NH3)4]SO4 stands for what?
Tetra zinc sulphate
Tetra amine zinc sulphate
Amine tetra zinc sulphide
Amin tetra zinc sulphate
State the valency of HSO3.
2+
3-
1-
1+
Which of the following is a balanced equation-
Al(OH)3 ----> Al2O3 + 3H2O
2Al(OH)3 -----> Al2O3 + 3H2O
Al(OH)3 ------> 2AlO3
Al(OH)3 ------> Al2O4
Formula of Tetra amine copper[II] sulphate is -
[Cu(NH3)4]SO4
Cu(NH3)4SO4
[Cu(NH3)3]SO4
None
Most common carbon molecule is-
C6
C8
C10
C12
What is the name of K2Cr2O7?
Potassium Dichromate
Potassium Chromate
Potassium chromium oxide
Potassium chro-oxide
What does this symbol (aq.) mean in a chemical reaction -
Aquatic
Acquires
Aqueous
Aqua
Which of the following is a salt?
Methane
Green vitriol
Calcium Hydroxide
None of the above
Which organic compounds contain only hydrogen and oxygen?
Hydrocarbons
Alcohols
Bases
Acids
Which element does not exhibit variable valency?
Gold
Nickel
Platinum
Lead
Which of the following elements is trivalent?
Plumbite
Carbide
Phosphite
Zincate
Valency of Zn is -
1+
2+
3+
4+
A symbol represents a short form of
Atom
Molecule
Ion
Compound
What is the valency of nitrogen in N2O
+1
-1
-3
+4
What is meant by the term symbol ?
(a)
Which of the following is the information and not limitation of the chemical equation
Change in color
Completion of reaction
Speed of reaction
None of above
Which of the following is the information and not limitation of the chemical equation
Change in color
Completion of reaction
Speed of reaction
None of above
Choose the correct statement.
Gaubler's Salt is a decahydrate
Gaubler's salt is a hectahydrate
Gaubler's salt is Pentahydrate
Which of the options given below is a variable valency
Cuprous
Potassium
Aluminum
Phosphate
Which of them is a base
Lead nitrate
Calcium hydroxide
Phosphoric acid
Methane
Which of them is monovalent element
Hydrogen Carbonate
Sulphate
Phosphate
Nitride
Which of the following is a tetravalent element-
Stannic
Ferric
Auric
Plumbous
Variable valency exhibit -
more than one valency
One valency
More than three valency
None of the above
In 1814 which scientists suggested a simple system of representing elements with symbols -
Mendleev
Berzelius
John Dalton
Democritus
which of the following is a negative radicle -
Hydroxide
Ammonium
Oxide
Chromium
The valency of all metals and hydrogen is considered
Positive
Negative
i) and ii)
None of the above
A Chemical equation is a shorthand of -
Physical change
Chemical change
Both of the above
None
An element is referred to as__________
when it exists as a single atom and represented by a single symbol of that element
Diatomic
Tetravalent
Monoatomic
Trivalent
