Practice Question and Answer

Q: Simplify the following equation
 55.55 + 155 + 15.55 + 0.5 + 0.05 = ?
3552 1

  • 1
    8010
    Correct
    Wrong
  • 2
    8020
    Correct
    Wrong
  • 3
    8030
    Correct
    Wrong
  • 4
    8040
    Correct
    Wrong
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Answer : 1. "8010"
Explanation :

Answer: A) 8010 Explanation: (2000 + 3)(2000 + 4) - (2000 + 1)(2000 + 2) = ? Since (2000 x 2000) - (2000 x 2000) is equal to zero. ?= (8000 + 6000 + 12) - (4000 + 2000 + 2) => 14012 - 6002 = 8010.

Q: In what organelle does cellular respiration take place? 2258 0

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    Cytoplasm
    Correct
    Wrong
  • 2
    Ribosomes
    Correct
    Wrong
  • 3
    Mitochondria
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Mitochondria"
Explanation :

Answer: C) Mitochondria Explanation: Cellular respiration is the multi-step process that creates energy from nutrients and food molecules. It begins in the cytoplasm of the cell, with the mitochondria functioning as the main organelle where the rest of the process continues and finishes. During respiration, glycolysis occurs in the cytoplasm of the cell.

Q: Which of the following is a function of the geosphere? 3439 0

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    providing a moderate, livable climate
    Correct
    Wrong
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    serving as the interface between the other spheres
    Correct
    Wrong
  • 3
    facilitating the movement of water through spheres through transpiration
    Correct
    Wrong
  • 4
    facilitating the process of photosynthesis
    Correct
    Wrong
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Answer : 2. "serving as the interface between the other spheres"
Explanation :

Answer: B) serving as the interface between the other spheres Explanation: The geosphere is the earth's solid rock or rigid outer layer known as the crust. Without the geosphere it would not be possible for humans to live on the planet. The function of the geosphere serving as the interface between the other spheres.

Q: The carbon tetrachloride molecule (CCl4) is 2774 0

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    a nonpolar molecule with polar bonds
    Correct
    Wrong
  • 2
    a nonpolar molecule with nonpolar bonds
    Correct
    Wrong
  • 3
    a polar molecule with polar bonds
    Correct
    Wrong
  • 4
    a polar molecule with nonploar bonds
    Correct
    Wrong
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Answer : 1. "a nonpolar molecule with polar bonds"
Explanation :

Answer: A) a nonpolar molecule with polar bonds Explanation: The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar.   When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.

Q: Which of the following fraction is the largest? 2594 1

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    7/12
    Correct
    Wrong
  • 2
    9/16
    Correct
    Wrong
  • 3
    13/20
    Correct
    Wrong
  • 4
    32/80
    Correct
    Wrong
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Answer : 1. "7/12"
Explanation :

Answer: A) 7/12 Explanation: Here to say which fraction is greater from the given options, the fraction with greater numerator with same denominator or smaller denominator with same numerator. To find the greater fraction, among the given options, make the denominators same for the options by finding the LCM of all the denominators. 7/12, 9/16, 13/20, 32/80 Now, LCM of 12, 16, 20, 80 = 240. Then, 140/240, 135/240, 156/240, 96/240 Here  156240 > 140240 > 135240 > 96240=> 1320 > 712 > 916 > 3280   Hence, largest fraction = 13/20.

Q: To the economist, total cost includes 2654 0

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    neither implicit nor explicit costs.
    Correct
    Wrong
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    implicit, but not explicit, costs.
    Correct
    Wrong
  • 3
    explicit, but not implicit, cost.
    Correct
    Wrong
  • 4
    explicit and implicit costs.
    Correct
    Wrong
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Answer : 4. "explicit and implicit costs."
Explanation :

Answer: D) explicit and implicit costs. Explanation:

Q: Compounding interest means interest accrues 2634 1

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    at variable rates throughout the term
    Correct
    Wrong
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    more quickly than simple interest
    Correct
    Wrong
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    more slowly than simple interest
    Correct
    Wrong
  • 4
    at the same rate as simple interest
    Correct
    Wrong
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Answer : 2. "more quickly than simple interest"
Explanation :

Answer: B) more quickly than simple interest Explanation: Compounding interest means interest accrues on the interest charged and the principal amount each period the interest is charged. Compound interest is calculated by multiplying the principal amount by one plus the annual interest rate raised to the number of compound periods minus one.The total initial amount of the loan is then subtracted from the resulting value. The formula for calculating compound interest is: [P (1 + i)n] – P = P [(1 + i)n – 1] (Where P = Principal, i = nominal annual interest rate in percentage terms, and n = number of compounding periods.) Take a three-year loan of Rs. 10,000 at an interest rate of 5% that compounds annually. What would be the amount of interest? In this case, it would be: Rs. 10,000 [(1 + 0.05)3] – 1 = 10,000 [1.157625 – 1] = Rs. 1,576.25.   How it grows ::

Q: Which two atoms form an ionic bond? 2422 0

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Answer :
Explanation :

Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another.. This bond generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.   Example :: One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.

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