CAT Practice Question and Answer

Q: There are 5 consecutive odd numbers. If the difference between square of the average of first two odd number and the of the average last two odd numbers is 396, what is the smallest odd number? 2016 0

  • 1
    29
    Correct
    Wrong
  • 2
    27
    Correct
    Wrong
  • 3
    31
    Correct
    Wrong
  • 4
    33
    Correct
    Wrong
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Answer : 1. "29"
Explanation :

Answer: A) 29 Explanation: Let the five consecutive odd numbers be x-4, x-2, x, x+2, x+4 According to the question, Difference between square of the average of first two odd number and the of the average last two odd numbers is 396 i.e, x+3 and x-3 ⇒x + 32 - x - 32 = 396⇒ x2 + 9 + 6x - x2 + 6x - 9 = 396⇒ 12x = 396⇒ x = 33   Hence, the smallest odd number is 33 - 4 = 29.

Q: Full convertibility of a rupee means ? 2016 0

  • 1
    Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply
    Correct
    Wrong
  • 2
    Repayment of loans in terms of rupees
    Correct
    Wrong
  • 3
    Payment for imports in terms of rupees
    Correct
    Wrong
  • 4
    Purchase of foreign exchange for rupees freely
    Correct
    Wrong
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Answer : 1. "Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply"
Explanation :

Answer: A) Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply Explanation:

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Answer : 4. "90"
Explanation :

Answer: D) 90 Explanation: Let 'x' be the number of new Rs.2000 notes. Given for one new 2000 note there are three old 500 notes. i.e, 3x Given 10 more new Rs.2000 notes are added to the collectionand the ratio of new Rs.2000 notes to old Rs.500 notes  x+103x=12⇒x=20 Therefore, number of new Rs.2000 notes =  x+10 = 30. old Rs.500 notes = 3x = 60. Thus, the total number of notes in the collection  = 30 + 60 = 90.

Q: Study of Rocks is called 2015 0

  • 1
    Geology
    Correct
    Wrong
  • 2
    Cytology
    Correct
    Wrong
  • 3
    Petrology
    Correct
    Wrong
  • 4
    Petology
    Correct
    Wrong
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Answer : 3. "Petrology"
Explanation :

Answer: C) Petrology Explanation: The scientific study of rocks is called petrology, which is an essential component of geology.

Q: The First step of Bacterial Replication is 2015 0

  • 1
    Pinching of the plasma membrane
    Correct
    Wrong
  • 2
    Separation of daughter cells
    Correct
    Wrong
  • 3
    Attachment of the DNA to the plasma membrane
    Correct
    Wrong
  • 4
    DNA Replication
    Correct
    Wrong
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Answer : 4. "DNA Replication"
Explanation :

Answer: D) DNA Replication Explanation: The First step of Bacterial Replication is DNA Replication. DNA must be copied in order to proceed.

Q: In a plant cell, DNA may be found in 2015 0

  • 1
    only in the nucleus and mitochondria.
    Correct
    Wrong
  • 2
    only in the nucleus and chloroplasts
    Correct
    Wrong
  • 3
    in the nucleus, mitochondria, and chloroplasts.
    Correct
    Wrong
  • 4
    only in the nucleus.
    Correct
    Wrong
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Answer : 3. "in the nucleus, mitochondria, and chloroplasts."
Explanation :

Answer: C) in the nucleus, mitochondria, and chloroplasts. Explanation: All of the genetic information in a cell was initially thought to be confined to the DNA in the chromosomes of the cell nucleus. It is now known that small circular chromosomes, called extranuclear, or cytoplasmic, DNA, are located in two types of organelles found in the cytoplasm of the cell. These organelles are the mitochondria in animal and plant cells and the chloroplasts in plant cells. Chloroplast DNA (cpDNA) contains genes that are involved with aspects of photosynthesis and with components of the special protein-synthesizing apparatus that is active within the organelle. Mitochondrial DNA (mtDNA) contains some of the genes that participate in the conversion of the energy of chemical bonds into the energy currency of the cell—a chemical called adenosine triphosphate (ATP)—as well as genes for mitochondrial protein synthesis.

Q: Which of the following is not a fossil fuel? 2015 0

  • 1
    Natural Gas
    Correct
    Wrong
  • 2
    Uranium
    Correct
    Wrong
  • 3
    Coal
    Correct
    Wrong
  • 4
    Petroleum
    Correct
    Wrong
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Answer : 2. "Uranium"
Explanation :

Answer: B) Uranium Explanation: Uranium is not a fossil fuel whereas coal, petroleum and natural gas are all natural resources. Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals. In common dialogue, the term fossil fuel also includes hydrocarbon-containing natural resources that are not derived from animal or plant sources

Q: 52 C in a P? 2013 0

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Answer :
Explanation :

52 C in a P represents 52 Cards in a Pack. Similar to  12 S of the Z  5 C in an OF

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