IIT JEE प्रश्न और उत्तर का अभ्यास करें

नवीनतमलोकप्रियमूल्यांकनपेज देखें 93 of 416कुल सवाल 3327 जॉइन Examsbook

प्र: I. a2-7a+12 = 0, II. b2-3b+2 = 0 Solve both the equations to find the values of a and b  ? 2765 0

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    if a > b
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    if a < b
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    if the relationship between a and b cannot be established.
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    if a ≤ b
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उत्तर : 1. "if a > b"
व्याख्या :

Answer: A) if a > b Explanation: I.  (a - 3)(a - 4) = 0   => a = 3, 4   II.   (b - 2)(b - 1) = 0   => b = 1, 2   => a > b

प्र: One New York publisher has estimated that 50,000 to 60,000 people in the United States want an anthology that includes the complete works of William Shakespeare. And what accounts for this renewed interest in Shakespeare? As scholars point out, his psychological insights into both male and female characters are amazing even today. This paragraph best supports the statement thatA. Shakespeare's characters are more interesting than fictional characters today.B. people even today are interested in Shakespeare's work because of the characters.C. academic scholars are putting together an anthology of Shakespeare's work.D. New Yorkers have a renewed interested in the work of Shakespeare.E. Shakespeare was a psychiatrist as well as a playwright. 2764 0

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    A
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    B
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    C
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    D
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उत्तर : 2. "B"
व्याख्या :

Answer: B) B Explanation: The last sentence in the paragraph clearly gives support for the idea that the interest in Shakespeare is due to the development of his characters. Choice a is incorrect because the writer never makes this type of comparison. Choice c is wrong because even though scholars are mentioned in the paragraph, there is no indication that the scholars are compiling the anthology. Choice d is wrong because there is no support to show that most New Yorkers are interested in this work. There is no support for choice e either.

प्र: Which component of an IED creates an electrical charge? 2763 0

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    activator
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    fuse
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    explosive
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    power source
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उत्तर : 4. "power source"
व्याख्या :

Answer: D) power source Explanation: The power source such as a Battery of an IED creates an electrical charge.   What are IED's :: An Improvised Explosive Device (IED) is a bomb constructed and deployed in ways other than in conventional military action. It may be constructed of conventional military explosives, such as an artillery shell, attached to a detonating mechanism. IEDs are commonly used as roadside bombs.

प्र: Choose the pair which shows the same relation of the given pair from the following options ?  BRISTLE : BRUSH 2762 0

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    arm : leg
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    key : piano
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    recline : chair
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    stage : curtain
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उत्तर : 2. "key : piano"
व्याख्या :

Answer: B) key : piano Explanation: A bristle is a part of a brush; a key is a part of a piano.

प्र: Sony is one-fifth the age of her mother 15 years ago and Sony’s brother is three-fifth the age of his mother 10 years ago. If the sum of Sony and her brother’s ages is 31 then how old is Sony's mother ? 2759 0

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    40
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    50
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    60
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    70
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उत्तर : 2. "50"
व्याख्या :

Answer: B) 50 Explanation: Sony and her brother's age sum is 31Let Sony's mother's age be 'x'.Now the conditions given for both of their ages related to their mom is1/5(x-15) + 3/5(x-10) = 31x-15 + 3x-30 = 1554x-45 = 1554x = 200x = 50So, Mother's age = 50. Cross verification : 15 years ago age = 35 => Sony age = 710 years ago age = 40 => bro age = 24 Sum = 24 + 7 = 31.

प्र: What travels around the world and stays in one spot? 2759 0

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    Slippers
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    Walking stick
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    Stamps
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    None of the above
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उत्तर : 3. "Stamps"
व्याख्या :

Answer: C) Stamps Explanation: Stamps are what travel around the worldstaying in one spot. Slippers and walking stick can also travel around the world but they will not stay at one spot. So they are eliminated.

प्र: What is the primary purpose of most constitutions? 2758 0

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    to provide a substitute for government
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    to define and limit government power
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    to give the government absolute power
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    to define a moral code for people to follow
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उत्तर : 2. "to define and limit government power"
व्याख्या :

Answer: B) to define and limit government power Explanation: There are many reasons why a constitution is needed. One of the primary purposes is to define and limit power of the government. It gives the structures for the functioning of the country such as courts and parliament and limits the power. e.g. to imprison without trial for the government.

प्र: Which of the following pairs is mismatched? 2758 0

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    Pila globosa - pearl
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    Kenia lacca - lac
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    Apis indica - honey
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    Bombyx mori - silk
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उत्तर : 1. "Pila globosa - pearl"
व्याख्या :

Answer: A) Pila globosa - pearl Explanation: Pinctada vulgaris is a bivalve from which pearl is obtained.

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