IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: How can we get 24 as an answer by using 6, 11, 3 and 9? 1174 0

  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर :
व्याख्या :

This can be solved in two ways using only 6, 11, 9 and 3 we must get 24. 1. {[(11–6) x 3] + 9} By solving this we get 5 x 3 + 9 = 15 + 9 = 24.   2. [(9–6) x (11–3)] = 3 x 8 = 24.

प्र: What is the first step in Photosynthesis? 1892 1

  • 1
    Formation of ATP
    सही
    गलत
  • 2
    Joining of 3-carbon atom to form glucose
    सही
    गलत
  • 3
    Ionization of water
    सही
    गलत
  • 4
    Excitement of an electron of chlorophyll photon of light
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 4. "Excitement of an electron of chlorophyll photon of light"
व्याख्या :

Answer: D) Excitement of an electron of chlorophyll photon of light Explanation: The first step in Photosynthesis is Excitement of an electron of chlorophyll photon of light.

प्र: Li3PO4 compound name? 2569 0

  • 1
    Lithium perchlorate
    सही
    गलत
  • 2
    Lithium phyrite
    सही
    गलत
  • 3
    Lithium phosphate
    सही
    गलत
  • 4
    None
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 3. "Lithium phosphate"
व्याख्या :

Answer: C) Lithium phosphate Explanation: The given compund Li3PO4 name is Lithium phosphate.   Lithium phosphate is a white crystal at room temperature. It is slightly soluble in water. It  can be used to produce glass, disk, colorful phosphor powder. It can also be used as a catalyst in some reactions.

प्र: What are the building blocks of Nucleic Acids? 1580 0

  • 1
    Pentose Sugar
    सही
    गलत
  • 2
    DNA
    सही
    गलत
  • 3
    RNA
    सही
    गलत
  • 4
    Nucleotides
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 4. "Nucleotides"
व्याख्या :

Answer: D) Nucleotides Explanation: The building blocks of the nucleic acids are "Nucleotides".   Each nucleotide are composed of three parts. They are :: 1.Pentose sugar 2.Nitrogenous bases 3.Phosphoric acid.

प्र: Which is the best definition of Federalism? 1968 0

  • 1
    Federalism encourages the practice of direct democracy at the state level rather than the national level.
    सही
    गलत
  • 2
    The quality of federal supremacy in government.
    सही
    गलत
  • 3
    A happy combination of mixed government.
    सही
    गलत
  • 4
    Federalism enables the state and the national government to share power.
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 4. "Federalism enables the state and the national government to share power."
व्याख्या :

Answer: D) Federalism enables the state and the national government to share power. Explanation: Federalism :: Federalism is a system based upon democratic rules and institutions in which the power to govern is shared between national and provincial/state governments, creating what is often called a federation.   Federalism is a political concept in which a group of members are bound together with a governing representative head.  Federalism enables the state and the national government to share power.

प्र: Library is to Book as Book is to 3986 0

  • 1
    Words
    सही
    गलत
  • 2
    Pages
    सही
    गलत
  • 3
    Binding
    सही
    गलत
  • 4
    Cover
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 2. "Pages"
व्याख्या :

Answer: B) Pages Explanation: A Library consists of Books in the same way Book consists Pages.   Hence, Library : Book :: Book : Pages.

प्र: A bag contains 3 red balls, 5 yellow balls and 7 pink balls. If one ball is drawn at random from the bag, what is the probability that it is either pink or red? 1700 0

  • 1
    2/3
    सही
    गलत
  • 2
    1/8
    सही
    गलत
  • 3
    3/8
    सही
    गलत
  • 4
    3/4
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 1. "2/3"
व्याख्या :

Answer: A) 2/3 Explanation: Given number of balls = 3 + 5 + 7 = 15 One ball is drawn randomly = 15C1 probability that it is either pink or red = 7C1 + 3C115C1 = 7 + 315 = 1015 = 23

प्र: Which action is safe for a pwc? 9999 0

  • 1
    towing a skier behind a pwc rated for 3 people with two persons on board
    सही
    गलत
  • 2
    shutting off the engine before cleaning debris from the pump intake
    सही
    गलत
  • 3
    seating a child to small to hold on the operator in front of the operator
    सही
    गलत
  • 4
    All the above
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 3. "seating a child to small to hold on the operator in front of the operator"
व्याख्या :

Answer: C) seating a child to small to hold on the operator in front of the operator Explanation: Two passengers behind the operator is safe for a PWC.

      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