CAT प्रश्न और उत्तर का अभ्यास करें

प्र: Which statement best describes Arteries? 2876 0

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    They have thin walls and transport blood away from the heart
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  • 2
    They have thick walls and transport blood toward the heart
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  • 3
    They have thin walls and transport blood toward the heart
    सही
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  • 4
    They have thick walls and transport blood away from the heart
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उत्तर : 4. "They have thick walls and transport blood away from the heart"
व्याख्या :

Answer: D) They have thick walls and transport blood away from the heart Explanation: Because arteries have to have thick walls for use of protection. Its when you get to veins where the walls get thinner. And the use of the heart is to pump blood to all of the cells and organs in the body so it would be to transport blood away from the heart. i.e.  Arteries = Away from the Heart Veins = Back to the Heart.

प्र: Antibiotics are mostly obtained from 2874 1

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    Viruses
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    Fungi
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    Bacteria
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  • 4
    Angiosperms
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उत्तर : 2. "Fungi"
व्याख्या :

Answer: B) Fungi Explanation:

प्र: Which is the most accurate statement about trade? 2872 0

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    Trade makes some nations better off and others worse off
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    Trading for a good can make a nation better off only if the nation cannot produce that good itself
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    Trade helps rich nations and hurts poor nations
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  • 4
    Trade can make every nation better off
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उत्तर : 4. "Trade can make every nation better off"
व्याख्या :

Answer: D) Trade can make every nation better off Explanation:

प्र: Suppose today is Friday, what day of the week will it be 65 days from now? 2865 0

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    Saturday
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    Sunday
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  • 3
    Friday
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  • 4
    Thursday
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उत्तर : 2. "Sunday"
व्याख्या :

Answer: B) Sunday Explanation: The day of the week repeats every 7 days. Given today is Friday. Again Friday is repeated on the 7th day, 14th,... on 7 multiple days. Hence, Friday is on the 63rd day, as 63 is multiple of 7.   Now, the required day of the week on the 65th day is Sunday.

प्र: Excretion is best described as the removal of 2862 0

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    Undigested material from the digestive tract
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    Metabolic wastes from a cell
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    Toxic wastes by the process of cyclosis
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    Water molecules from dipeptide hydrolysis
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उत्तर : 2. "Metabolic wastes from a cell"
व्याख्या :

Answer: B) Metabolic wastes from a cell Explanation: Excretion is best described as the removal of Metabolic wastes from a cell.

प्र: The difference of two numbers is 14. Their LCM and HCF are 441 and 7. Find the two numbers ? 2858 0

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    63 and 49
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    64 and 48
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    62 and 46
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  • 4
    64 and 49
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उत्तर : 1. "63 and 49"
व्याख्या :

Answer: A) 63 and 49 Explanation: Since their HCFs are 7, numbers are divisible by 7 and are of the form 7x and 7y Difference = 14 => 7x - 7y = 14=> x - y = 2 product of numbers = product of their hcf and lcm=> 7x * 7y = 441 * 7=> x * y = 63 Now, we havex * y = 63 , x - y = 2=> x = 9 , y = 7 The numbers are 7x and 7y=> 63 and 49

प्र: If 10 men take 15 days to complete a work. In how many days will 37 men complete the work? 2858 0

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    3 days
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  • 2
    4 days
    सही
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  • 3
    5 days
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  • 4
    6 days
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उत्तर : 2. "4 days"
व्याख्या :

Answer: B) 4 days Explanation: Given 10 men take 15 days to complete a work => Total mandays = 15 x 10 = 150 Let the work be 150 mandays. => Now 37 men can do 150 mandays in 150/37 =~ 4 days

प्र: The ratio of Karthik’s and Kalyan’s ages is 4: 5. If the difference between the present age of Kalyan and the age of Karthik 5 years hence is 3 years, then what is the total of present ages of Karthik and Kalyan? 2853 0

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    56 years
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  • 2
    62 years
    सही
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  • 3
    69 years
    सही
    गलत
  • 4
    72 years
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उत्तर : 4. "72 years"
व्याख्या :

Answer: D) 72 years Explanation: Let us consider Karthik as K1 and Kalyan as K2. Given k18+k1 and K2 - (K1 + 5) = 3  K2 - K1 = 8 K2 = 8 + K1 Now,  k18+k1= 45 => K1 = 32 years Therefore K2 = 40 years. K1 + K2 = 72 years.

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