IIT JEE Practice Question and Answer

Q: A girl facing north rotates 100(degree) clockwise then 190(degree) anticlockwise. what is new direction of the girl ? 5027 0

  • 1
    North-East
    Correct
    Wrong
  • 2
    West
    Correct
    Wrong
  • 3
    South-East
    Correct
    Wrong
  • 4
    South
    Correct
    Wrong
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Answer : 2. "West"
Explanation :

Answer: B) West Explanation: First girl facing NorthThen she rotates 100 deg clock wise => 10 deg ESThen again she rotates 190 deg anti clock wise => for 100 deg it is North and more 90 deg means West.Therefore, the new direction of the girl is West.

Q: Off-duty risk decisions are 5018 0

  • 1
    Dictated by the Department of the Army
    Correct
    Wrong
  • 2
    The responsibility of individual Soldiers
    Correct
    Wrong
  • 3
    Made by leaders and commanders
    Correct
    Wrong
  • 4
    Not a consideration
    Correct
    Wrong
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Answer : 2. "The responsibility of individual Soldiers"
Explanation :

Answer: B) The responsibility of individual Soldiers Explanation: Risk Management : A decision-making process for identifying hazards and controlling risks both on-duty and off-duty is called a Risk Management (RM).   Hence, Off-duty risk decisions are the responsibility of individual Soldiers.

Q: Lichens are the best indicator of 5009 1

  • 1
    Air pollution
    Correct
    Wrong
  • 2
    Sound pollution
    Correct
    Wrong
  • 3
    Noise pollution
    Correct
    Wrong
  • 4
    Water pollution
    Correct
    Wrong
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Answer : 1. "Air pollution"
Explanation :

Answer: A) Air pollution Explanation: 1. Lichens are plants that grow in exposed places such as rocks or tree bark.   2.  Lichens are widely used as environmental indicators or bio-indicators. They can be used as air pollution indicators, especially of the concentration of sulfur-di-oxide in the atmosphere.     3. They need to be very good at absorbing water and nutrients to grow there.

Q: In a certain code language ‘ROUTINE’ is written as 'VMRGFLI'. How will 'CRUELTY' be written in that code language ? 4998 0

  • 1
    UPVCZLR
    Correct
    Wrong
  • 2
    VPCVZRL
    Correct
    Wrong
  • 3
    CVCPZRL
    Correct
    Wrong
  • 4
    VCPCZLR
    Correct
    Wrong
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Answer : 2. "VPCVZRL"
Explanation :

Answer: B) VPCVZRL Explanation: ROUTINE IS 7 LETTER WORD.. (1st=R,2nd=O,3rd=U,4th=T,5th=I,6th=N,7th=E)1st and 3rd letter interchanging. (UORTINE)5th and 7th letter interchanging. (UORTENI)1st letter shifting one after that (VORTENI)2nd letter shifting two befor that (VMRTENI)3rd letter remains same (VMRTENI)4th letter(total alphabets - current)+1(26 - 20)+1= 7.(i.e) G (VMRGFNI)5th letter shifting one after that (VMRGFNI)6th letter shifting two befor that (VMRGFLI)7th letter remains same (VMRGFLILike that,CRUELTY IS 7 LETTER WORD.. (1st=C,2nd=R,3rd=U,4th=E,5th=L,6th=T,7th=Y)1st and 3rd letter interchanging. (URCELTY)5th and 7th letter interchanging. (URCEYTL)1st letter shifting one after that (VRCEYTL)2nd letter shifting two befor that (VPCEYTL)3rd letter remains same (VPCEYTL)4th letter (total alphabets - current)+1(26 - 5)+1= 22.(i.e) V (VPCVYTL) 5th letter shifting one after that (VPCVZTL)6th letter shifting two befor that (VPCVZRL)7th letter remains same (VPCVZRL).

Q: One-quarter of one-seventh of a land is sold for Rs. 30,000. What is the value of an four fifteenth of land ? 4985 0

  • 1
    Rs.1,92,000
    Correct
    Wrong
  • 2
    Rs.2,24,000
    Correct
    Wrong
  • 3
    Rs.1,26,000
    Correct
    Wrong
  • 4
    Rs.3,42,000
    Correct
    Wrong
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Answer : 2. "Rs.2,24,000"
Explanation :

Answer: B) Rs.2,24,000 Explanation: One-quarter of one-seventh = 1/4 x 1/7= 1/28Now, 1/28 of a land costs = Rs. 30,000Thus, 8/35 of the land will cost = 30,000 x 28 x 4/15= Rs. 2,24,000.

Q: What was the day of the week on 17th June, 1998 ? 4976 7

  • 1
    Monday
    Correct
    Wrong
  • 2
    Tuesday
    Correct
    Wrong
  • 3
    Wednesday
    Correct
    Wrong
  • 4
    Friday
    Correct
    Wrong
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Answer : 3. "Wednesday"
Explanation :

Answer: C) Wednesday Explanation: 17th June, 1998 = (1997 years + Period from 1.1.1998 to 17.6.1998)Odd days in 1600 years = 0Odd days in 300 years = 197 years has 24 leap years + 73 ordinary years.Number of odd days in 97 years ( 24 x 2 + 73) = 121 = 2 odd days.Jan. Feb. March. April. May. June.(31 + 28 + 31 + 30 + 31 + 17) = 168 days168 days = 24 weeks = 0 odd day.Total number of odd days = (0 + 1 + 2 + 0) = 3.Given day is Wednesday.

Q: Which of these relationships is true of an uncharged atom? 4966 0

  • 1
    The atomic mass is equal to the atomic number.
    Correct
    Wrong
  • 2
    The number of electrons is equal to the number of neutrons.
    Correct
    Wrong
  • 3
    The number of protons is equal to the number of electrons.
    Correct
    Wrong
  • 4
    The atomic mass is equal to the number of electrons.
    Correct
    Wrong
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Answer : 3. "The number of protons is equal to the number of electrons."
Explanation :

Answer: C) The number of protons is equal to the number of electrons. Explanation: The number of protons is equal to the number of electrons. That is the number of positive charges is equal to the number of negative charges.

Q: Vaunt : Flaunt :: Disparate : ? 4966 0

  • 1
    Similar
    Correct
    Wrong
  • 2
    Homogenous
    Correct
    Wrong
  • 3
    Contrast
    Correct
    Wrong
  • 4
    Alike
    Correct
    Wrong
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Answer : 3. "Contrast"
Explanation :

Answer: C) Contrast Explanation: Vaunt - Vaunt means to boast or to praise about something excessively. Flaunt - Flaunt also means to boast about something or to praise something.   Flaunt is the synonym of the word Vaunt.   Disparate - Disparate means essentially different in its kind or unlike or not able to be compared. Then the required word is the synonym of Disparate.   Here in the given options, Contrast is the only word which is similar in meaning of Disparate.   Hence, Vaunt : Flaunt :: Disparate : Contrast.

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