IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Which state has won the 'Best Tourism State' national award 2017 ? 1057 0

  • 1
    Maharashtra
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  • 2
    Karnataka
    सही
    गलत
  • 3
    Tamilnadu
    सही
    गलत
  • 4
    Madhya Pradesh
    सही
    गलत
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उत्तर : 4. "Madhya Pradesh"
व्याख्या :

Answer: D) Madhya Pradesh Explanation: Madhya Pradesh has won the 'Best Tourism State' national award for the third consecutive year. President Ram Nath Kovind handed over the award, named as 'Hall of Fame Award', to Minister of State for Tourism Surendra Patwa at a ceremony held at Vigyan Bhawan in New Delhi.

प्र: One boat is overtaking another. Which boat must give way? 1049 0

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उत्तर :
व्याख्या :

The boat which is overtaken must give way to the boat which is overtaking.

प्र: Brightness of bulb depends on voltage or current? 1047 0

  • 1
    Current
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  • 2
    Voltage
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  • 3
    Both A & B
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  • 4
    None
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उत्तर : 3. "Both A & B"
व्याख्या :

Answer: C) Both A & B Explanation: Brightness of bulb depends on both voltage and current. The brightness depends on power. Since we know that  Power (P) = Voltage x Current = V I So whether you increase the current or the voltage the brightness will increase.   Example Illustration:  If you connect a long bulb and a round bulb in series, the long bulb glows but the round bulb does not. Both of them have the same current flowing through them (they are in series) but the long bulb has a greater voltage across it because it has more resistance (even though V= IR is not obeyed exactly, voltage drop does depend on the resistance). If you connect a round bulb and a long bulb in parallel, however, it is the round bulb that is brighter because now the voltage across both bulbs is the same but the current is larger through the round bulb (smaller resistance).   Hence, the brightness of a bulb depends on power i.e, both voltage and current.

प्र: 40% of 80? 1043 0

  • 1
    36
    सही
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  • 2
    32
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  • 3
    42
    सही
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  • 4
    44
    सही
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उत्तर : 2. "32"
व्याख्या :

Answer: B) 32 Explanation: Here 40% of 80 is given as 40100 x 80 = 8 x 4 = 32

प्र: I have three eyes but only one leg. I still close one even if you beg.  What am I? 1042 0

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उत्तर :
व्याख्या :

A traffic light. It has three 'eyes' (the red, orange and green lights) and the leg is the pole holding it up. Many people beg the light to stay green as they’re approaching.

प्र: What is the theme of 2017 World Telecommunication and Information Society Day (WTISD)  ? 1039 0

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    Entrepreneurship for social impact
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  • 2
    Reduce digital divide
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  • 3
    D)  ? A) Entrepreneurship for social impact B) Reduce digital divide C)
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  • 4
    ? A) Entrepreneurship for social impact B) Reduce digital divide C) Promote digital education for social welfare D) Big data for big impact
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उत्तर : 4. "? A) Entrepreneurship for social impact B) Reduce digital divide C) Promote digital education for social welfare D) Big data for big impact"
व्याख्या :

Answer: D) Big data for big impact Explanation: The World Telecommunication and Information Society Day (WTISD) is observed every year on May 17 to mark the anniversary of the signing of the first International Telegraph Convention (ITC) and the creation of the International Telecommunication Union (ITU). The purpose of the day is to help raise awareness of the possibilities that the use of the Internet and other information and communication technologies (ICT) can bring to societies and economies, as well as of ways to bridge the digital divide. The 2017 theme “Big Data for Big Impact” focuses on the power of Big Data for development and aims to explore how to turn imperfect, complex, often unstructured data into actionable information in a development context.

प्र: The Study of Blood is called as 1029 0

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उत्तर :
व्याख्या :

The Study of Blood is called as Hematology which involves treating diseases that affect the production of blood and its components, such as bloodcells, hemoglobin, blood proteins, bone marrow, platelets, blood vessels, spleen, and the mechanism of coagulation.

प्र: Where does most weather occur in the atmosphere? 1027 0

  • 1
    Ionosphere
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  • 2
    Stratosphere
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  • 3
    Troposphere
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    गलत
  • 4
    Mesosphere
    सही
    गलत
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उत्तर : 3. "Troposphere"
व्याख्या :

Answer: C) Troposphere Explanation: The troposphere is the lowest layer of the atmosphere and where most clouds are. That means all weather is in the troposphere. Almost all weather occurs in the Troposphere, basically, the lowest layer that goes up to about 10 - 15 kms.

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