IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Which of the following is not a polymer? 2302 0

  • 1
    DNA
    सही
    गलत
  • 2
    Glucose
    सही
    गलत
  • 3
    Starch
    सही
    गलत
  • 4
    Cellulose
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 2. "Glucose"
व्याख्या :

Answer: B) Glucose Explanation: Since A polymer is a large molecule, or macromolecule, composed of many repeated subunits. Glucose is not a polymer.

प्र: Pride is to lion as shoal is to 2301 0

  • 1
    Fish
    सही
    गलत
  • 2
    School
    सही
    गलत
  • 3
    Deer
    सही
    गलत
  • 4
    Plants
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 1. "Fish"
व्याख्या :

Answer: A) Fish Explanation: Given Pride is to lion as shoal is to ?. Pride means a group of lions. Similarly, Shoal means a group of fish swimming. Here the other options have no relation with the given word in that manner.   Hence, Pride is to Lion as Shoal is to Fish.

प्र: The longest period of prenatal development is the 2300 0

  • 1
    Germinal period
    सही
    गलत
  • 2
    Fetal period
    सही
    गलत
  • 3
    Embryonic period
    सही
    गलत
  • 4
    None
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 2. "Fetal period"
व्याख्या :

Answer: B) Fetal period Explanation: The third and longest period of prenatal development, extending from the ninth week until birth is Fetal period.   The process of prenatal development occurs in three main stages. The first two weeks after conception are known as the germinal stage, the third through the eighth week are known as the embryonic period, and the time from the ninth week until birth is known as the fetal period.

प्र: One type of liquid contains 25 % of benzene, the other contains 30% of benzene. A can is filled with 6 parts of the first liquid and 4 parts of the second liquid. Find the percentage of benzene in the new mixture. 2299 0

  • 1
    27 %
    सही
    गलत
  • 2
    26 %
    सही
    गलत
  • 3
    29 %
    सही
    गलत
  • 4
    21 %
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 1. "27 %"
व्याख्या :

Answer: A) 27 % Explanation: Let the percentage of benzene = X(30 - X)/(X- 25) = 6/4 = 3/2 => 5X = 135  X = 27 So, required percentage of benzene = 27 %

प्र: What has to be broken before you can use or eat it? 2299 0

  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर :
व्याख्या :

Egg. Egg is to be broken if we want to use or eat it.

प्र: Assertion( 2298 0

  • 1
    : Most of the Himalayan rivers are perennial.Reason(R) : They are fed by melting snow. A) R correctly explains A
    सही
    गलत
  • 2
    R is true but A is fale
    सही
    गलत
  • 3
    A is true but R is false
    सही
    गलत
  • 4
    A) R correctly explains A B) R is true but A is fale C) A is true but R is false D)
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 1. ": Most of the Himalayan rivers are perennial.Reason(R) : They are fed by melting snow. A) R correctly explains A"
व्याख्या :

Answer: A) R correctly explains A Explanation: Most Himalayan rivers are perennial because they are fed by the melting snow throughout the year.Thus, both A and R are true & R correctly explains A.

प्र: Which of the following is NOT a constitutional body? 2298 0

  • 1
    National Advisory Council
    सही
    गलत
  • 2
    Law Commission
    सही
    गलत
  • 3
    Election Commission
    सही
    गलत
  • 4
    Finance Commission
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 1. "National Advisory Council"
व्याख्या :

Answer: A) National Advisory Council Explanation: National Advisory Council is NOT a constitutional body.   The National Advisory Council (NAC) of India was an advisory body set up by the first United Progressive Alliance (UPA) government to advise the Prime Minister of India.

प्र: In how many ways the letters of the word NUMERICAL can be arranged so that the consonants always occupy the even places ? 2298 0

  • 1
    5!
    सही
    गलत
  • 2
    6!
    सही
    गलत
  • 3
    4!
    सही
    गलत
  • 4
    Can't determine
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 4. "Can't determine"
व्याख्या :

Answer: D) Can't determine Explanation: NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions. And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions. Therefore, Can't be determined.

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई