IIT JEE Practice Question and Answer

Q: What comes first latitude or longitude? 1003 0

  • 1
    Latitude
    Correct
    Wrong
  • 2
    Longitude
    Correct
    Wrong
  • 3
    Both A & B
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 1. "Latitude"
Explanation :

Answer: A) Latitude Explanation: Latitude comes first among latitude or longitude.  Latitude is written before longitude. The first number is always the latitude and the second is the longitude. Latitude is written with a number, followed by either “north” or “south” depending on whether it is located north or south of the equator. Longitude is written with a number, followed by either “east” or “west” depending on whether it is located east or west of the Prime Meridian.

Q: The term facultative anaerobe refers to an organism that 1414 0

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    Uses oxygen or grows without oxygen.
    Correct
    Wrong
  • 2
    Requires less oxygen than is present in air.
    Correct
    Wrong
  • 3
    Prefers to grow without oxygen.
    Correct
    Wrong
  • 4
    Is killed by oxygen.
    Correct
    Wrong
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Answer : 1. "Uses oxygen or grows without oxygen."
Explanation :

Answer: A) Uses oxygen or grows without oxygen. Explanation: The term facultative anaerobe refers to an organism that which uses oxygen when it is present or grows without oxygen when it is not there.

Q: Which method of expressing direction is indicated in the illustration? 1334 0

  • 1
    Section
    Correct
    Wrong
  • 2
    Interjuction
    Correct
    Wrong
  • 3
    Intersection
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Intersection"
Explanation :

Answer: C) Intersection Explanation:

Q: What type of bone is a phalanx? 1180 0

  • 1
    Short bones
    Correct
    Wrong
  • 2
    Joints
    Correct
    Wrong
  • 3
    Long bones
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Long bones"
Explanation :

Answer: C) Long bones Explanation: The phalanges or a phalanx are/is digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. The phalanges are classed as long bones.

Q: Atomic mass of first 30 elements? 977 0

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Answer :
Explanation :

Here I give you the first 30 Atomic elements names and their Atomic masses.   Atomic number      Element        Atomic mass                                      1                 Hydrogen           1         2                  Helium              4         3                 Lithium              6.94         4                Beryllium            9.01         5                  Boron               10.81         6                Carbon               12.01         7                Nitrogen             14.01         8                Oxygen              15.99         9                Fluorine              19.00        10                Neon                 20.18        11               Sodium               22.99        12             Magnesium           25.31        13             Aluminium            26.98        14               Silicon                28.09        15             Phosphorus           30.97        16               Sulphur               32.07        17               Chlorine              35.45        18                Argon                 39.95        19             Potassium              39.10        20              Calcium                40.08        21             Scandium              44.96        22             Titanium               47.87        23            Vanadium              50.94        24             Chromium            24. 52        25            Manganese            54.94        26                Iron                  55.85        27              Cobalt                 58.93        28               Nickel                 58.69        29              Copper                 63.55        30                Zinc                   65.41

Q: I go in hard. I come out soft. You blow me hard. What am I? 1010 0

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Answer :
Explanation :

Gum.

Q: Which one of the following elements is a transition element? 1042 0

  • 1
    H
    Correct
    Wrong
  • 2
    As
    Correct
    Wrong
  • 3
    Fe
    Correct
    Wrong
  • 4
    Sr
    Correct
    Wrong
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Answer : 3. "Fe"
Explanation :

Answer: C) Fe Explanation: In chemistry, the term transition metal has three possible meanings: The IUPAC definition defines a transition metal as "an element whose atom has a partially filled d sub-shell, or which can give rise to cations with an incomplete d sub-shell". Any of the set of metallic elements occupying a central block (Groups IVB–VIII, IB, and IIB, or 4–12) in the periodic table, e.g. iron, manganese, chromium, and copper. Chemically they show variable valency and a strong tendency to form coordination compounds, and many of their compounds are coloured.   Here in the given options, only iron (Fe) is a transition metal since Strontium is an alkaline earth, arsenic is a metalloid, hydrogen is (normally) a diatomic gas.

Q: I go around and in the house but never touches the house. What am I? 1136 0

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Answer :
Explanation :

Te Sun. From the time rising it goes around the house upto sunset, but never touches the house.

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