Chemical Equations and Stoichiometry NEET Questions

Physical Chemistry - Some Basic Concepts of Chemistry

Chemical Equations and Stoichiometry MCQ Questions


1.
The word 'stoichiometry' is derived from two Greek words meaning:
A.
Compound and weight
B.
Atom and combine
C.
Element and measure
D.
Mass and volume
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ANSWER :
C. Element and measure
2.
Stoichiometry deals with the calculation of:
A.
Speed of chemical reactions
B.
Quantitative relationships of reactants and products in chemical reactions
C.
Properties of mixtures
D.
Atomic structure of elements
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ANSWER :
B. Quantitative relationships of reactants and products in chemical reactions
3.
A chemical equation is balanced according to the:
A.
Law of definite proportions
B.
Avogadro's law
C.
Law of multiple proportions
D.
Law of conservation of mass
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ANSWER :
D. Law of conservation of mass
4.
Which is balanced correctly?
A.
Mg + O₂ → MgO
B.
2Mg + 2O₂ → 2MgO
C.
Mg + 2O₂ → MgO₂
D.
2Mg + O₂ → 2MgO
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ANSWER :
D. 2Mg + O₂ → 2MgO
5.
Balance the equation: C₃H₈ + O₂ → CO₂ + H₂O. The balanced equation has:
A.
6 O₂
B.
5 O₂
C.
3 O₂
D.
4 O₂
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ANSWER :
B. 5 O₂
6.
In the combustion reaction of methane CH₄ + xO₂ → CO₂ + 2H₂O, the value of x is:
A.
1
B.
2
C.
4
D.
3
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ANSWER :
B. 2