IIT JEE Practice Question and Answer
8Q: ABCDEFGHIJKLMNOPQRSTUVWXYZ Riddle What word or Phrase or letter is it representing abcdefghijklmnopqrstvwxyz 2904 05b5cc6aae4d2b4197774cf79
5b5cc6aae4d2b4197774cf79- Show AnswerHide Answer
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Answer :
Explanation :
Here in the alphabets the letter U is missing and it represents the word MISSING YOU (U).
Q: The reactivity of an atom arises from 2892 05b5cc64de4d2b4197774bc9d
5b5cc64de4d2b4197774bc9d- 1the existence of unpaired electrons in the valence shelltrue
- 2the energy differences between the electron shellsfalse
- 3the sum of the potential energies of all the electron shellsfalse
- 4the average distance of the outermost electron shell from the nucleusfalse
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Answer : 1. "the existence of unpaired electrons in the valence shell"
Explanation :
Answer: A) the existence of unpaired electrons in the valence shell Explanation: When atoms react they do so in order to reach the lowest energy, which is the most stable. The electrons orbitals will overlap in the way that reduces the energy the most. Orbitals of similar energy will produce the greatest stabilisation.The answer you gave isn't the whole story, it depends what species is reacting with what. The effective nuclear charge on the atom will affect the energy of the valance electrons. Hence, the reactivity of an atom arises from the existence of unpaired electrons in the valence shell.
Q: What was one outcome of laissez faire economic policies? 2891 05b5cc615e4d2b4197774b6dd
5b5cc615e4d2b4197774b6dd- 1Poverty traps that cannot be escaped through free choicefalse
- 2Monopoly power that emerges naturally in the market and allows businesses to exploit consumersfalse
- 3Businesses pay workers lowfalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Explanation :
Answer: D) All of the above Explanation: Laissez-faire is simply a way to describe a government's hands-off approach to economic policies. This approach was particularly prevalent in the United States at the turn of the 20th century, which led to numerous issues within American manufacturing. There are many outcomes of laissez-faire economic policies. Some of the outcomes of laissez-faire economics were: * Businesses pay workers low. * Pollution of air and water. * Poverty traps that cannot be escaped through free choice. * General glut that results from overproduction or underconsumption * Monopoly power that emerges naturally in the market and allows businesses to exploit consumers. * Exploitation of the working class that pushes wages down to subsistence and compels laborers to work in harsh and unsafe conditions. * External economies that generate situations where desirable goods are underproduced on the market, and undesirable goods are overproduced on the market. * Public goods that are not supplied by the market due to free-rider problems.
Q: In a queue, Shankar is ninth from the rear end. Althaf's place is eighth from the front. Nitu is standing between the two. What could be the minimum numbers of boys standing in the queue ? 2889 05b5cc74ae4d2b4197774fa9a
5b5cc74ae4d2b4197774fa9a- 118false
- 214true
- 322false
- 424false
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Answer : 2. "14"
Explanation :
Answer: B) 14 Explanation: 1 2 3 4 5 6(Shankar) 7(Nitu) 8(Althaf) 9 10 11 12 13 14Here, Althaf is 8th from front, Shankar is 9th from rear end and Nitu is between themSo minimum no. of boys standing in the queue = 14
Q: Play is to actor as concert is to 2883 05b5cc69ee4d2b4197774c99a
5b5cc69ee4d2b4197774c99a- 1Musiciantrue
- 2percussionfalse
- 3symphonyfalse
- 4pianofalse
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Answer : 1. "Musician"
Explanation :
Answer: A) Musician Explanation: An actor performs in a play. A musician performs at a concert. Choices b, c, and d are incorrect because none is people who perform. Hence, Play is to actor as concert is to Musician.
Q: If (1 × 2 × 3 × 4 ........ × n) = n!, then 15! - 14! - 13! is equal to ___? 2881 05b5cc6bee4d2b4197774d997
5b5cc6bee4d2b4197774d997- 114 × 13 × 13!false
- 215 × 14 × 14!false
- 314 × 12 × 12!false
- 415 × 13 × 13!true
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Answer : 4. "15 × 13 × 13!"
Explanation :
Answer: D) 15 × 13 × 13! Explanation: 15! - 14! - 13! = (15 × 14 × 13!) - (14 × 13!) - (13!) = 13! (15 × 14 - 14 - 1) = 13! (15 × 14 - 15) = 13! x 15 (14 - 1) = 15 × 13 × 13!
Q: Look at the series : 3, 7, 24, 11, __, 19, 19,... What number should fill the blank ? 2880 05b5cc6d5e4d2b4197774e610
5b5cc6d5e4d2b4197774e610- 115true
- 213false
- 321false
- 416false
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Answer : 1. "15"
Explanation :
Answer: A) 15 Explanation: Two series alternate here, with every third number following a different pattern.In the main series, 4 is added to each number to arrive the next.In alternate series, 5 is subtracted from each number t arrive the next number.Here in the main series 3 + 4 = 77 + 4 = 1111 + 4 = 1515 + 4 = 19 In alternate series 24 - 5 = 1919 - 5 = 14...
Q: Where is RAM located? 2879 05b5cc6b9e4d2b4197774d720
5b5cc6b9e4d2b4197774d720- 1Mother Boardtrue
- 2Expansion Boardfalse
- 3External Drivefalse
- 4Nonefalse
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Answer : 1. "Mother Board"
Explanation :
Answer: A) Mother Board Explanation: RAM is located in The central processing unit (CPU), also called a processor, is located inside the computer case on the motherboard. It is sometimes called the brain of the computer, and its job is to carry out commands.

