IIT JEE Practice Question and Answer

Q: I am an English word with five letters. If you remove my last four I am still pronounced the same. What am I? 1840 0

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Answer :
Explanation :

An English word with five letters in which if you remove the last four letters, still pronounced the same is QUEUE.

Q: Rust forms when _____ reacts with chemicals in rocks. 1838 0

  • 1
    Water
    Correct
    Wrong
  • 2
    Oxygen
    Correct
    Wrong
  • 3
    Nitrogen
    Correct
    Wrong
  • 4
    Carbondioxide
    Correct
    Wrong
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Answer : 2. "Oxygen"
Explanation :

Answer: B) Oxygen Explanation: Rust forms when oxygen reacts with chemicals in rocks, and that is often the case with many other elements in general. Like a copper nail being exposed to the air will rust.

Q: States earn maximum revenue through 1838 0

  • 1
    excise duties
    Correct
    Wrong
  • 2
    commercial taxes
    Correct
    Wrong
  • 3
    land revenue
    Correct
    Wrong
  • 4
    custom revenue
    Correct
    Wrong
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Answer : 2. "commercial taxes"
Explanation :

Answer: B) commercial taxes Explanation:

Q: What type of bond is joining the two hydrogen atoms? 1836 0

  • 1
    Hydrophobic
    Correct
    Wrong
  • 2
    Ionic
    Correct
    Wrong
  • 3
    Covalent
    Correct
    Wrong
  • 4
    Hydrophilic
    Correct
    Wrong
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Answer : 3. "Covalent"
Explanation :

Answer: C) Covalent Explanation: Covalent type of bonding joins the two hydrogen atoms. Hydrogen atoms in compounds such as H2 and H2O are joined to the molecule with covalent bonds. This is where electrons are shared between the atoms in order to fill there valence shells.

Q: What is the angle made by the hour hand and the minute hand, if the clock shows 9:15 pm ? 1835 0

  • 1
    165 degrees
    Correct
    Wrong
  • 2
    172.5 degrees
    Correct
    Wrong
  • 3
    112.5 degrees
    Correct
    Wrong
  • 4
    125.5 degrees
    Correct
    Wrong
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Answer : 2. "172.5 degrees"
Explanation :

Answer: B) 172.5 degrees Explanation: The minute hand angle is the easiest since an hour (i.e. 60 minutes) corresponds to the entire 360 degrees, each minute must correspond to 6 degrees. So just multiply the number of minutes in the time by 6 to get the number of degrees for the minute hand. Here 15 minutes corresponds to 15 x 6 = 90 degrees Next, you have to figure out the angle of the hour hand. Since there are 12 hours in the entire 360 degrees, each hour corresponds to 30 degrees. But unless the time is EXACTLY something o'clock, you have to write the time as a fractional number of hours rather than as hours and minutes.Here the time is 9:15 which is (9 + 15/60) = 37/4 hours. Since each hour corresponds to 30 degrees, we multiply 30 to get (37/4)(30) = 277.5 degrees. Since the hour hand is at 277.5 degrees and the minute hand is at 90 degrees, we can subtract to get the angle of separation. 277.5 - 90 = 187.5 =~ 360 - 187.5 = 172.5 degrees.

Q: How many Months of the year have 28 Days? 1835 0

  • 1
    12
    Correct
    Wrong
  • 2
    7
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 1. "12"
Explanation :

Answer: A) 12 Explanation: We have 12 months.   In every month we get 28 or more days.    So that implies we get 28 days in each and every month.

Q: What is the correct order for Respiration? 1835 0

  • 1
    Election transport chain – Krebs’ cycle – glycolysis
    Correct
    Wrong
  • 2
    Glycolysis – Krebs’ cycle – electron transport chain
    Correct
    Wrong
  • 3
    Glycolysis – electron transport chain – Krebs’ cycle
    Correct
    Wrong
  • 4
    The Krebs’ cycle - electron transport chain - glycolysis
    Correct
    Wrong
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Answer : 2. "Glycolysis – Krebs’ cycle – electron transport chain"
Explanation :

Answer: B) Glycolysis – Krebs’ cycle – electron transport chain Explanation: Cellular respiration can be broken down into three main steps: 1. Glycolysis, 2. The Kreb's cycle (The citric acid cycle), and 3. Electron Transport Chain.

Q: Alcohol first impairs your 1834 0

  • 1
    hearing skills
    Correct
    Wrong
  • 2
    colour recognition
    Correct
    Wrong
  • 3
    judgement
    Correct
    Wrong
  • 4
    heart
    Correct
    Wrong
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Answer : 3. "judgement"
Explanation :

Answer: C) judgement Explanation: The reason why drunk people acts like stupids is when they drink, especially if they drink a lot, first their brain becomes impaired by such large quantities of alcohol that it cannot operate properly. So they cannot judge anything.   Hence, Alcohol first impairs your Judgement.

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