IIT JEE Practice Question and Answer

Q: If 25% of a number is subtracted from a second number, the second number reduces to its four-sixth. What is the ratio of the first number to the second number  ? 1711 0

  • 1
    4:3
    Correct
    Wrong
  • 2
    2:3
    Correct
    Wrong
  • 3
    3:2
    Correct
    Wrong
  • 4
    5:3
    Correct
    Wrong
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Answer : 1. "4:3"
Explanation :

Answer: A) 4:3 Explanation: Let the numbers be p & q q-p/4 = 4q/6 => q-4q/6 = p/4 => 2q/6 = p/4  => p/q = 4/3

Q: The sum of the digits of a two-digit number is 12. The difference of the digits is 6. Find the number ? 1710 0

  • 1
    57
    Correct
    Wrong
  • 2
    75
    Correct
    Wrong
  • 3
    48
    Correct
    Wrong
  • 4
    39
    Correct
    Wrong
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Answer : 4. "39"
Explanation :

Answer: D) 39 Explanation: Let the two-digit number be 10a + ba + b = 12 --- (1)If a>b, a - b = 6If b>a, b - a = 6If a - b = 6, adding it to equation (1), we get2a = 18 => a =9so b = 12 - a = 3Number would be 93.if b - a = 6, adding it to the equation (1), we get2b = 18 => b = 9a = 12 - b = 3.Number would be 39.There fore, Number would be 39 or 93.

Q: Havana is the capital city of 1710 0

  • 1
    Suriname
    Correct
    Wrong
  • 2
    Belgium
    Correct
    Wrong
  • 3
    Greece
    Correct
    Wrong
  • 4
    Cuba
    Correct
    Wrong
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Answer : 4. "Cuba"
Explanation :

Answer: D) Cuba Explanation: Havana is the capital city of Cuba. It's currency is Cuban Peso.

Q: Where is the Sahara desert located? 1710 0

  • 1
    India
    Correct
    Wrong
  • 2
    Africa
    Correct
    Wrong
  • 3
    America
    Correct
    Wrong
  • 4
    Iraq
    Correct
    Wrong
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Answer : 2. "Africa"
Explanation :

Answer: B) Africa Explanation: The Sahara is the largest non-polar desert in the world. The Sahara is the largest hot desert and the third largest desert in the world after Antarctica and the Arctic. The desert covers large sections of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan and Tunisia. It covers 9 million square kilometers (3,500,000 sq mi), amounting to 31% of Africa. Its borders include the Mediterranean Sea to the north, the Atlantic Ocean to the west and the Red Sea to the east.

Q: Commercial banks are funded through which of the following? 1710 0

  • 1
    Stock holders
    Correct
    Wrong
  • 2
    Government funding
    Correct
    Wrong
  • 3
    Services
    Correct
    Wrong
  • 4
    Customer deposits
    Correct
    Wrong
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Answer : 4. "Customer deposits"
Explanation :

Answer: D) Customer deposits Explanation: A commercial bank is a type of financial institution that accepts deposits, offers checking account services, makes business, personal and mortgage loans, and offers basic financial products like certificates of deposit (CDs) and savings accounts to individuals and small businesses. A commercial bank is where most people do their banking, as opposed to an investment bank.   Commercial banks are funded through customer deposits. These banks make money by providing loans and earning interest income from those loans. The types of loans a commercial bank can issue vary and may include mortgages, auto loans, business loans and personal loans. A commercial bank may specialize in just one or a few types of loans.   Customers who deposit money into these accounts effectively lend money to the bank and are paid interest. However, the interest rate paid by the bank on money they borrow is less than the rate charged on money they lend.

Q: What is the primary component of natural gas? 1709 0

  • 1
    Nitrogen
    Correct
    Wrong
  • 2
    Ethane
    Correct
    Wrong
  • 3
    Propane
    Correct
    Wrong
  • 4
    Methane
    Correct
    Wrong
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Answer : 4. "Methane"
Explanation :

Answer: D) Methane Explanation: Natural gas is primarily composed of methane, but also contains ethane, propane, and heavier hydrocarbons.   Natural gas is a colorless, tasteless, odorless, and non-toxic gas. Because it is odorless, mercaptan is added to the natural gas, in very small amounts to give the gas a distinctive smell of rotten eggs. This strong smell can alert you of a potential gas leak.   It also contains small amounts of nitrogen, carbon dioxide, hydrogen sulphide and trace amounts of water.

Q: Where does glycolysis take place in Eukaryotic cells? 1709 0

  • 1
    Mitochondrial Outer membrane
    Correct
    Wrong
  • 2
    Cytoplasm
    Correct
    Wrong
  • 3
    Mitochondrial inner membrane
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 2. "Cytoplasm"
Explanation :

Answer: B) Cytoplasm Explanation: Glycolysis is the first step of cellular respiration. This process breaks down glucose into two pyruvic acids, and produces 2 ATP and 2 NADH.  In eukaryotic cells, glycolysis and fermentation reactions occur in the cytoplasm.

Q: "Confederation Cup" is associated with which of the following game? 1709 0

  • 1
    Hockey
    Correct
    Wrong
  • 2
    Badminton
    Correct
    Wrong
  • 3
    Chess
    Correct
    Wrong
  • 4
    Football
    Correct
    Wrong
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Answer : 4. "Football"
Explanation :

Answer: D) Football Explanation:

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