Chemical Reactions MCQs
Chemical Reactions MCQs
Answer these Chemical Reactions MCQs and see how sharp is your knowledge of Chemical Reactions. Scroll down and let's start!
1: ___c2h6(g)+____o2(g)→____co2(g)+____h2o(g)
A. 2,7,4,6
B. 3,4,5,6
C. 6,4,7,2
D. 7,2,6,4
2: The electron configuration [kr]4d10 represents __________.
A. Sr+2
B. Sn+2
C. Te+2
D. Ag+1
3: The rate law of a reaction is rate = k[d][x]. the units of the rate constant are ________.
A. Mol L⁻¹ s⁻¹
B. L mol⁻¹ s⁻¹
C. Mol2 L⁻² s⁻¹
D. Mol L⁻¹ s⁻²
4: In general, as activation energy increases, reaction rate ________.
A. Goes down if the reaction is exothermic.
B. Goes down if the reaction is endothermic.
C. Stays the same regardless of whether the reaction is exothermic or endothermic.
D. Goes down regardless of whether the reaction is exothermic or endothermic.
E. None of the above
5: Oxidation cannot occur without ________.
A. Oxygen.
B. Water.
C. Reduction.
D. Air.
E. Acid
6: Of the possible bonds between carbon atoms (single, double, and triple), ________.
A. A triple bond is longer than a single bond.
B. A double bond is stronger than a triple bond.
C. A single bond is stronger than a triple bond.
D. A double bond is longer than a triple bond.
E. A single bond is stronger than a double bond
7: Environmental bioremediation using bacteria is least effective on _____.
A. Heavy metals
B. Number of digits
C. Decimal point
D. None of these
8: The concentration of iodide ions in a 0.193 m solution of barium iodide is __________.
A. 0.193 M
B. 0.386 M
C. 0.0965 M
D. 0.579 M
E. 0.0643 M
9: The ground-state electron configuration of the element ________ is [kr]5s14d5.
A. Mo
B. Kr
C. Mg
D. All of these
10: The oxidation number of hydrogen when it is in a compound other than a hydride is _____.
A. +1
B. +2
C. +3
11: Tooth fillings are often made of gold or porcelain because these materials are ______.
A. Explosive
B. Visually pleasing
C. Non-reactive
D. Chemically similar to teeth
12: Hazardous substances ______________ while toxins are ______________.
A. Personal biases and preferences as well as logic.
B. They are becoming resistant to antibiotics.
C. A minimal amount is taken into the body.
D. Are dangerous substances; poisonous substances
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Chemical Reactions MCQs
