IIT JEE Practice Question and Answer
8Q: In following number series only one number is wrong. Find out that wrong or odd number in the series? 6, 78, 858, 7722, 54055, 270270 1622 05b5cc6bce4d2b4197774d8bb
5b5cc6bce4d2b4197774d8bb- 1270270false
- 254055true
- 37722false
- 4858false
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Answer : 2. "54055"
Explanation :
Answer: B) 54055 Explanation: Here the given series follows a pattern that, multiplying the number with odd numbers in decreasing order starting with 13. That is, 6 × 13 = 78 65 × 11 = 858 858 × 9 = 7722 7722 × 7 = 54054 54054 × 5 = 270270 Hence, the wrong number is 54055
Q: Where does translation occur? 1621 05b5cc639e4d2b4197774ba67
5b5cc639e4d2b4197774ba67- 1Nucleusfalse
- 2Ribosomesfalse
- 3Cytoplasmtrue
- 4mitochondrionfalse
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Answer : 3. "Cytoplasm"
Explanation :
Answer: C) Cytoplasm Explanation: Right after that, the mRNA enters the cytoplasm through nuclear pores. There, it could be translated into proteins by ribosomes. This process is called translation. Translation occurs in the cytoplasm whereas transcription occurs in the nucleus.
Q: Animal migration on savannas is often governed by 1621 05b5cc64de4d2b4197774bc61
5b5cc64de4d2b4197774bc61- 1Rainfalltrue
- 2Distancefalse
- 3Reproductionfalse
- 4Firefalse
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Answer : 1. "Rainfall"
Explanation :
Answer: A) Rainfall Explanation: Savannas are home to a wide diversity of animals. Many animals of the savanna migrate throughout the year, searching for food and water. Many of the droughts are seasonal and hit one area before another, so animals are constantly following the rains. Hence, Rain fall is what often governs animal migration on savannas.
Q: Atmospheric pressure exerted on earth is due to 1621 05b5cc651e4d2b4197774bd28
5b5cc651e4d2b4197774bd28- 1gravitational pulltrue
- 2rotation of earthfalse
- 3revolution of earthfalse
- 4uneven heating of earthfalse
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Answer : 1. "gravitational pull"
Explanation :
Answer: A) gravitational pull Explanation: The atmospheric pressure at the surface of the Earth is due to gravitational pull of the earth and is about 14.7 psi. That means that the weight of a column of air which has a cross section of 1 square inch and which stretches from the surface of the Earth to space is 14.7 pounds.
Q: Three maths classes: A, B and C take an algebra test. The average score of class A is 83. The average score of class B is 76. The average score of class C is 85. The average score of class A and B is 79 and average score of class B and C is 81. What is the average score of classes A, B, C ? 1621 05b5cc75ee4d2b4197774fcb6
5b5cc75ee4d2b4197774fcb6- 181false
- 278false
- 380.5false
- 481.5true
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Answer : 4. "81.5"
Explanation :
Answer: D) 81.5 Explanation: Let the number of students in classes A, B and C be P, Q and R respectively.Then, total score of A = 83P, total score of B = 76Q, total score of C = 85R.Also given that,(83P + 76Q) / (P + Q) = 79=>4P = 3Q.(76Q + 85R)/(Q + R) = 81=>4R = 5Q,=>Q = 4P/3 and R = 5P/3Therefore, average score of A, B, C = ( 83P + 76Q + 85R ) / (P + Q + R) = 978/12 = 81.5
Q: Which of the following atoms has the largest radius? 1620 05b5cc6a5e4d2b4197774ccbb
5b5cc6a5e4d2b4197774ccbb- 1Brfalse
- 2Ktrue
- 3Nafalse
- 4Clfalse
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Answer : 2. "K"
Explanation :
Answer: B) K Explanation: For neutral atoms, the periodic trends in atomic size can be described like this Atomic size decreases when going from left to right across a period,Atomic size increases when going from top to bottom down a group. Let's use these trends to try and figure out which atom would have the largest radius. If you look at elements that are located in the same group, potassium will have a larger atomic radius when compared with sodium. Likewise, bromine will have a larger atomic radius when compared with chlorine. Now focus on potassium and bromine. Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.
Q: Which of the following is / are fund managers for National Pension System (NPS) in 2017 ? 1618 05b5cc761e4d2b4197774fd71
5b5cc761e4d2b4197774fd71- 1Axis provident fundfalse
- 2Yes bank pension fundfalse
- 3ICICI prudential pensiontrue
- 4Punjab National provident fundfalse
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Answer : 3. "ICICI prudential pension"
Explanation :
Answer: C) ICICI prudential pension Explanation: At present in 2017, there are only seven NPS fund managers viz. HDFC Pension Fund, ICICI Prudential Pension, Kotak Pension Fund, LIC Pension Fund, Reliance Capital Pension, SBI Pension Fund and UTI Retirement Solutions.
Q: Lucky started working 2 years ago. Her starting salary was half of Karthik's salary at that time. Each year since then Lucky and Karthik have received a rise of 10% in their respective salary. What percentage (to the nearest percent) of Karthik's current salary is Lucky's current salary ? 1618 05b5cc6cfe4d2b4197774e2f9
5b5cc6cfe4d2b4197774e2f9- 175%false
- 222.5%false
- 335%false
- 450%true
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Answer : 4. "50%"
Explanation :
Answer: D) 50% Explanation: Let the salary of Karthik 2 years ago be Rs.100So, Lucky's salary 2 years ago was Rs.50 Karthik's present salary has seen two 10 percent increases. So as Lucky's salary. So, Karthik's salary 1 year ago = 100 + 10% of 100 = 100 + 10 = 110.Karthik's present salary = 110 + 10% of 110 = 110 + 11 = 121. Lucky's salary 1 year ago = 50 + 10% of 50 = 50 + 5 = 55Lucky's present salary = 55 + 10% of 55 = 55 + 5.5 = 60.5 Lucky's present salary of 60.5 = 50% of Karthik's present salary of 121.

