IIT JEE Practice Question and Answer

Q: 12 as a percentage? 1651 0

  • 1
    50%
    Correct
    Wrong
  • 2
    5%
    Correct
    Wrong
  • 3
    0.5%
    Correct
    Wrong
  • 4
    0.05%
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "50%"
Explanation :

Answer: A) 50% Explanation: 1/2 as a percentage means 1/2 = 0.5 in decimal Now, in percentage means 0.5 x 100% = 50%.

Q: The price of an article has been reduced by 35%. In order to restore the original price the new price must be increased by ? 1650 0

  • 1
    51.8 %
    Correct
    Wrong
  • 2
    49.25 %
    Correct
    Wrong
  • 3
    47.2 %
    Correct
    Wrong
  • 4
    53.84 %
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "53.84 %"
Explanation :

Answer: D) 53.84 % Explanation: 100 65 -------65 ------- 35100 ------ ? => 53.84 %

Q: In a college, number of boys is 75% of number of girls. Difference between boys and girls is 35. On a particular day 20% boys were absent, then find the number of boys those who present? 1650 0

  • 1
    72
    Correct
    Wrong
  • 2
    84
    Correct
    Wrong
  • 3
    93
    Correct
    Wrong
  • 4
    81
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "84"
Explanation :

Answer: B) 84 Explanation: Ratio of girls and boys = 100% : 75% = 4:3 Difference is 1 unit = 35 So, 3 units = 35 x 3 = 105 If 20% absent, that’s mean 80% present. So, present boys = 80% of 105 = 80×105100 = 84

Q: How do cancer cells differ from normal cells? 1650 0

  • Show AnswerHide Answer
  • Workspace

Answer :
Explanation :

There are many differences between cancer cells and normal cells. Some of the differences are well known, whereas others have only been recently discovered and are less well understood. Cancer Cells vs. Normal Cells :: Below are some of the major differences between normal cells and cancer cells, which in turn account for how malignant tumors grow and respond differently to their surroundings than benign tumors. Growth :— Normal cells stop growing (reproducing) when enough cells are present. For example, if cells are being produced to repair a cut in the skin, new cells are no longer produced when there are enough cells present to fill the hole; when the repair work is done. In contrast, cancer cells don’t stop growing when there are enough cells present. This continued growth often results in a tumor (a cluster of cancer cells) being formed.  Communication :— Cancer cells don’t interact with other cells as normal cells do. Normal cells respond to signals sent from other nearby cells that say, essentially, “you’ve reached your boundary.” When normal cells “hear” these signals they stop growing. Cancer cells do not respond to these signals. Stickiness :— Normal cells secrete substances that make them stick together in a group. Cancer cells fail to make these substances, and can “float away” to locations nearby, or through the bloodstream or system of lymph channels to distant regions in the body.   Ability to Metastasize (Spread) :— Normal cells stay in the area of the body where they belong. For example, lung cells remain in the lungs. Cancer cells, because they lack the adhesion molecules that cause stickiness, are able to travel via the bloodstream and lymphatic system to other regions of the body—they have the ability to metastasize.    Appearance :— Under a microscope, normal cells and cancer cells may look quite different. In contrast to normal cells, cancer cells often exhibit much more variability in cell size—some are larger than normal and some are smaller than normal. In addition, cancer cells often have an abnormal shape, both of the cell, and of the nucleus (the “brain” of the cell.)  The rate of growth :— Normal cells reproduce themselves and then stop when enough cells are present. Cancer cells reproduce rapidly before the cells have had a chance to mature.   Maturation :— Normal cells mature. Cancer cells, because they grow rapidly and divide before cells are fully mature, remain immature. Doctors use the term undifferentiated to describe immature cells (in contrast to differentiated to describe more mature cells.)    Evading the immune system  :— When normal cells become damaged, the immune system (via cells called lymphocytes) identifies and removes them. Cancer cells are able to evade (trick) the immune system long enough to grow into a tumor by either by escaping detection or by secreting chemicals that inactivate immune cells that come to the scene.   Functioning :— Normal cells perform the function they are meant to perform, whereas cancer cells may not be functional. For example, normal white blood cells help fight off infections. In leukemia, the number of white blood cells may be very high, but since the cancerous white blood cells are not functioning as they should, people can be more at risk for infection even with an elevated white blood cell count.

Q: Who formulates fiscal policy in India? 1649 0

  • 1
    Ministry of Finance
    Correct
    Wrong
  • 2
    Reserve Bank of India
    Correct
    Wrong
  • 3
    Securities and Exchange Board of India (SEBI)
    Correct
    Wrong
  • 4
    Finance Commission
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Ministry of Finance"
Explanation :

Answer: A) Ministry of Finance Explanation: In India, Fiscal Policy is formulated by the Ministry of Finance.   Fiscal policy is playing an important role on the economic and social front of a country. Traditionally, fiscal policy is concerned with the determination of state income and expenditure policy. But with the passage of time, the importance of fiscal policy has been increasing continuously for attaining rapid economic growth. An effective fiscal policy is composed of policy decisions relating to the entire financial structure of the government including tax revenue, public expenditures, loans, transfers, debt management, budgetary deficit, etc.

Q: In a race of 200 m, A can beat B by 31 m and C by 18 m. In a race of 350 m, C will beat B by ? 1649 0

  • 1
    25 m
    Correct
    Wrong
  • 2
    21 m
    Correct
    Wrong
  • 3
    22 m
    Correct
    Wrong
  • 4
    19 m
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "25 m"
Explanation :

Answer: A) 25 m Explanation: A:B = 200 : 169A:C = 200 : 182 CB = CA×AB    182200×200169   => 182:169   When C covers 182 m , B Covers 169 mWhen C covers 350 m , B Covers 169182×350=> 325 m       So C beats B by (350 - 325) = 25 m.

Q: Who is the first woman lawyer to be appointed as Supreme court judge? 1649 0

  • 1
    Indu Malhotra
    Correct
    Wrong
  • 2
    Fathima Beevi
    Correct
    Wrong
  • 3
    R. Banumathi
    Correct
    Wrong
  • 4
    Ruma Pal
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Indu Malhotra"
Explanation :

Answer: A) Indu Malhotra Explanation: Supreme Court collegium has selected senior advocate Indu Malhotra as the first woman lawyer to be directly appointed as a judge of the apex court. Along with Malhotra, Uttarakhand High Court Chief Justice KM Joseph has also been promoted as a Supreme Court justice. Malhotra holds the distinction of being only the second woman in Supreme Court’s history to be designated as a senior advocate in 2007. In all, Malhotra is going to be the seventh woman judge since independence to make it to the Supreme Court. At present, Justice R Banumathi is the lone woman judge in the apex court.

Q: Raju sold an article by giving a discount of 8% for Rs. 17,940 and earn profit of 19.6 %. If he did not give discount then how much profit percentage he gets ? 1648 0

  • 1
    27%
    Correct
    Wrong
  • 2
    30%
    Correct
    Wrong
  • 3
    32%
    Correct
    Wrong
  • 4
    25%
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "30%"
Explanation :

Answer: B) 30% Explanation: Let the M.R.P of an article be 100 %   Selling price of article =Rs. 17940   If he give a discount of 8 % then S.P = 92 % 92 % = 17490 100 % = 19500   Now C.P of the article is    17490 x 100/119.6 = 15000   If he did not give the discount, then    Required profit percentage =

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully