IIT JEE Practice Question and Answer

Q: Chylomicrons are synthesized within the 2005 0

  • 1
    Intestinal cells
    Correct
    Wrong
  • 2
    Liver
    Correct
    Wrong
  • 3
    Storage compartment of plant seeds
    Correct
    Wrong
  • 4
    Lymphatic system
    Correct
    Wrong
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Answer : 4. "Lymphatic system"
Explanation :

Answer: D) Lymphatic system Explanation: Lipoproteins are particles that contain triacylglycerol (TAG), cholesterol, phospholipids and amphipathic proteins called apolipoproteins.   The four major types of lipoproteins are 1. chylomicrons, 2. very low-density lipoprotein (VLDL), 3. low-density lipoprotein (LDL), and 4. high-density lipoprotein (HDL).   Chylomicrons are formed in the endoplasmic reticulum in the absorptive cells (enterocytes) of the small intestine.   The function of these lipoproteins is to deliver energy-rich triacylglycerol (TAG) to cells in the body (pink pathway). TAG is stripped from chylomicrons and VLDL through the action of lipoprotein lipase, an enzyme that is found on the surface of endothelial cells. This enzyme digests the TAG to fatty acids and monoglycerides, which can then diffuse into the cell to be oxidized, or in the case of an adipose cell, to be re-synthesized into TAG and stored in the cell.

Q: Pointing to a lady , a man said," The son of her only brother is the brother of my wife."How is the lady related to the man ? 2005 0

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    sister of father-in-law
    Correct
    Wrong
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    sister
    Correct
    Wrong
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    mother
    Correct
    Wrong
  • 4
    mother-in-law
    Correct
    Wrong
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Answer : 1. "sister of father-in-law"
Explanation :

Answer: A) sister of father-in-law Explanation: Brother of person's wife → brother-in-law of the person. Hence, the son of lady's brother is brother-in-law of the person. Therefore, the brother of the lady is the father-in-law of the person. Hence, the lady is the sister of the person's father-in-law.

Q: The purpose of choke in tube light is 2004 0

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    Induce high voltage
    Correct
    Wrong
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    Induce low resistance
    Correct
    Wrong
  • 3
    Induce high resistance
    Correct
    Wrong
  • 4
    Induce low voltage
    Correct
    Wrong
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Answer : 1. "Induce high voltage"
Explanation :

Answer: A) Induce high voltage Explanation: When the switch is ON, in a tube light choke is nothing but the coil/ballast ( inductor) which is used to induce the high voltage across it. as we know that inductor has property to induce high voltage for the brief period of time, this high voltage is required to ionize the gases in the starter. Then gas inside the starter gets ionized due to this full voltage and heats the bimetallic strip that is caused to be bent to connect to the fixed contact. Current starts flowing through the starter. Although the ionization potential of the neon is the little bit more than that of the argon but still due to small electrode gap high voltage gradient is appeared in the neon bulb and hence glow discharge is started first in a starter. As voltage gets reduced due to the current causes a voltage drop across the inductor, the strip cools and breaks away from the fixed contact. At that moment a large L di/dt voltage surge comes across the inductor at the time of breaking. This high valued surge comes across the tube light electrodes and strikes penning mixture (mixture argon gas and mercury vapor). Gas discharge process continues and current gets the path to flow through the tube light gas only due to low resistance as compared to the resistance of starter.

Q: Compressions and Rarefactions are characteristic of 2004 0

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    Longitudinal waves
    Correct
    Wrong
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    Transverse waves
    Correct
    Wrong
  • 3
    Both A & B
    Correct
    Wrong
  • 4
    Neither of A & B
    Correct
    Wrong
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Answer : 1. "Longitudinal waves"
Explanation :

Answer: A) Longitudinal waves Explanation: Compressions and Rarefactions are characteristic of Longitudinal waves. The direction of vibration of the particles is in the same plane as in which the wave is propagating. The particles vibrate back and forth, about their mean positions.

Q: MONEX is associated with 2004 0

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    Monetary experiment
    Correct
    Wrong
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    Lunar experiment
    Correct
    Wrong
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    Montreal experiment
    Correct
    Wrong
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    Monsoon experiment
    Correct
    Wrong
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Answer : 4. "Monsoon experiment"
Explanation :

Answer: D) Monsoon experiment Explanation: Monsoon experiment is abbreviated as MONEX.   The Monsoon Experiment is the core of the GARP Monsoon Subprogramme, which is a major international effort to achieve a better understanding of the Planetary monsoon circulation, the major seasonal perturbation of the general circulation of the atmosphere and the influence of the annual cycle of precipitation associated with the monsoon on the agriculture of the many populous nations of the region.   Hence, MONEX is associated with The Monsoon Experiment.

Q: Indian state where Uniform Civil Code is applied? 2004 0

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    Uttarakhand
    Correct
    Wrong
  • 2
    Uttar Pradesh
    Correct
    Wrong
  • 3
    Goa
    Correct
    Wrong
  • 4
    Delhi
    Correct
    Wrong
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Answer : 3. "Goa"
Explanation :

Answer: C) Goa Explanation: Uniform civil code is the ongoing point of debate within Indian mandate to replace personal laws based on the scriptures and customs of each major religious community in India with a common set of rules governing every citizen.   Goa is the only state in INdia where Uniform Civil Code is applied. Laws are equal to all religion. Polygamy and triple talaq are illegal.

Q: General Knowledge Challenge : 2003 0

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

Answer: C) 3 Explanation:

Q: What is the oxidation number of sulfur in H2S? 2003 0

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

Answer: B) -2 Explanation: The sum of the oxidation numbers in a compound must equal zero. In the compound hydrogen sulfide, H2S, the two hydrogen atoms have an oxidation number of +1, for a total of +2. Therefore, the oxidation number of sulfur in the compound is -2, and the sum of the oxidation numbers is 0.

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