IIT JEE Practice Question and Answer

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Answer : 2. "17"
Explanation :

Answer: B) 17 Explanation: Since floor starts form the 1 therefore 2 will be the 1st floor.Form 1 to 10 only 4,6,8,9,10 are not prime.Form 11 to 20 only 14 ,16,18 are not prime also non of their digits are prime.From 21 to 30 each number has a prime number so it must no be consider.In between 40 to 49 we have to consider only 40,44,46,48,49.50 to 59 follow either of the condition so we have too neglect it.In between 60 to 68 60,64,66,68.total option = 17.

Q: What is my PIN number ? 1553 0

  • 1
    93714
    Correct
    Wrong
  • 2
    42789
    Correct
    Wrong
  • 3
    36671
    Correct
    Wrong
  • 4
    93747
    Correct
    Wrong
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Answer : 4. "93747"
Explanation :

Answer: D) 93747 Explanation: From the hints, Only two options for 1st and 2nd digits => 4,2 and 9,3 since it is single digits Sum of second and third digit  = 10  If 2 => 3rd digit = 8 If 3 => 3rd digit = 7 4th digit = 2nd digit + 1 => (2+1 =3) or (3+1 = 4) Sum of all digits = 30 Let 5th digit be x => 1st possibility = 4 + 2 + 8 + 3 + x = 30 => x = 13 (Not possible since it has 2 digits) => 2nd possibility = 9 + 3 + 7 + 4 + x = 30 => x = 7 Therefore, the PIN is 93747

Q: What is true about certificates of deposit? 1553 0

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    the money has to remain in the account for a specified period of time
    Correct
    Wrong
  • 2
    they are the most liquid account available
    Correct
    Wrong
  • 3
    they offer lower interest rates than savings accounts
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 1. "the money has to remain in the account for a specified period of time"
Explanation :

Answer: A) the money has to remain in the account for a specified period of time Explanation: A certificate of deposit (CD) is a savings certificate with a fixed maturity date, specified fixed interest rate and can be issued in any denomination aside from minimum investment requirements. CD's are generally issued by commercial banks

Q: What do genes code for? 1553 0

  • 1
    Ptoteins
    Correct
    Wrong
  • 2
    DNA
    Correct
    Wrong
  • 3
    RNA
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Ptoteins"
Explanation :

Answer: A) Ptoteins Explanation: The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.

Q: Sreya bought a plot for Rs. 6,00,000,  then sold half of the plot at 10 % profit and rest at 15% profit. What is the total profit % that Sreya gain? 1553 0

  • 1
    13.8 %
    Correct
    Wrong
  • 2
    11.4 %
    Correct
    Wrong
  • 3
    12.5 %
    Correct
    Wrong
  • 4
    14.5 %
    Correct
    Wrong
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Answer : 3. "12.5 %"
Explanation :

Answer: C) 12.5 % Explanation: 10% profit at half plot = 600000/2 x 10/100 = Rs. 30,000 15% profit at remaining half plot = 600000/2 x 15/100 = Rs. 45,000 Now, total profit = 30000 + 45000 = 75000 Profit % = 75000/600000 x 100 = 12.5 %

Q: The First Indian city to get " Electric Radio Cabs " is ? 1552 0

  • 1
    Goa
    Correct
    Wrong
  • 2
    Delhi
    Correct
    Wrong
  • 3
    Hyderabad
    Correct
    Wrong
  • 4
    Nagpur
    Correct
    Wrong
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Answer : 4. "Nagpur"
Explanation :

Answer: D) Nagpur Explanation: With India's pledge to go all electric by 2030, Nagpur will be the first city in the country to adopt electric cabs as the country moves a step closer to its goal. The pilot project will see around 200 e-cabs in Nagpur with the local body to provide for the charging stations across the city. Currently, Mahindra and Honda are few of the car-manufacturers who have electric and hybrid vehicles in their line-up. We do hope that the situation changes, as hybrid and electric vehicles will help in the growing pollution in India. Countries such as France, Netherland and Belgium have already started to adopt electric and hybrid vehicles.

Q: A sum of Rs. 8,000 is deposited for 3 years at 5% per annum compound interest (compounded annually). The difference of interest for 3 years and 2 years will be 1552 0

  • 1
    Rs. 387
    Correct
    Wrong
  • 2
    Rs. 441
    Correct
    Wrong
  • 3
    Rs. 469
    Correct
    Wrong
  • 4
    Rs. 503
    Correct
    Wrong
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Answer : 2. "Rs. 441"
Explanation :

Answer: B) Rs. 441 Explanation: Given principal amount = Rs. 8000 Time = 3yrs Rate = 5% C.I for 3 yrs = 8000 x 105100 x 105100 x 105100 - 8000= Rs. 1261   Now, C.I for 2 yrs = 8000 x 105100 x 105100= Rs. 820    Hence, the required difference in C.I is 1261 - 820 = Rs. 441

Q: Most Explosive Type of Volcano is 1551 0

  • 1
    The Cinder Cone
    Correct
    Wrong
  • 2
    Rhyolite caldera complexes
    Correct
    Wrong
  • 3
    Shield Volcanoes
    Correct
    Wrong
  • 4
    The Basault Volcanoes
    Correct
    Wrong
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Answer : 2. "Rhyolite caldera complexes"
Explanation :

Answer: B) Rhyolite caldera complexes Explanation:

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