In this article
Q1. Which of the following elements will have two unpaired valence electrons?- Q2. What kind of reaction is an acid-base neutralization reaction?
- Q3. How many atoms are in 1 mole of H2?
- Q4. Which of the following units is common for measuring concentration?
- Q5. How is 13,200 written in scientific notation?
- Q6. Convert the given value to standard notation: 3.01∗10−4
- Q7. Which of the following is a condition of the ideal gas law?
- Q8. What can be said about the rates of exothermic and endothermic reactions?
- Q9. For all x in the domain of the function x+1/ x3– x, this function is equivalent to:
- Q10. What is the value of |-7| – |7-29| ?
- Q11. What is the product of the complex numbers (-2i+5) and (2i+5) ?
- Q12. What is the determinant of the matrix?
- Q13. What is the complex conjugate of the number 2+3i ?
- Q14. What is the measure, in degree, of an angle with a measure of 7π/9 radians?
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Q1. Which of the following elements will have two unpaired valence electrons?
A) Fluorine
B) Nitrogen
C) Carbon
Answer: C
Q2. What kind of reaction is an acid-base neutralization reaction?
A) Single-replacement
B) Oxidation-reduction
C) Double-replacement
Answer: C
Q3. How many atoms are in 1 mole of H2?
A) None of the other answers
B) 6.022 * 1046
C) 1.2044 * 1024
Answer: C
Q4. Which of the following units is common for measuring concentration?
A) kg/m3
B) kg/ms2
C) mol/L
Answer: C
Q5. How is 13,200 written in scientific notation?
A) None of these
B) 1.32 * 104
C) 1.3200 * 10−4
Answer: B
Q6. Convert the given value to standard notation: 3.01∗10−4
A) 0.0301
B) 0.000301
C) 0.0000301
Answer: B
Q7. Which of the following is a condition of the ideal gas law?
A) The gas molecules must be moving at a slow speed
B) The gas molecules do not have volume
C) The gas molecules must interact with each other
Answer: B
Q8. What can be said about the rates of exothermic and endothermic reactions?
A) The rates of endothermic reactions are faster than the rates of exothermic reactions
B) None of these are valid answers
C) The rates of exothermic reactions are faster than the rates of endothermic reactions
Answer: B
Q9. For all x in the domain of the function x+1/ x3– x, this function is equivalent to:
A) 1/x2 – 1/x3
B) 1/x3 – 1/x
C) 1/ x2-x
D) 1/x3
Ans: C
Q10. What is the value of |-7| – |7-29| ?
A) -29
B) 15
C) -15
D) 29
Ans: C
Q11. What is the product of the complex numbers (-2i+5) and (2i+5) ?
A) 3
B) 20i-21
C) 29
D) 20i+21
Ans: C
Q12. What is the determinant of the matrix?
A) -40
B) -6
C) 40
D) 160
Ans: A
Q13. What is the complex conjugate of the number 2+3i ?
A) -3i
B) 3i
C) 2-3i
D)2+3i
Ans: C
Q14. What is the measure, in degree, of an angle with a measure of 7π/9 radians?
A) 63°
B) 70°
C) 140°
D) 90°
Ans: C
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Mar 10, 2025
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