IIT JEE Practice Question and Answer
8Q: Whether the last number 240 in the following series is according to the remaining numbers pattern ? 2, 4, 12, 48, 240 1123 05b5cc6c0e4d2b4197774daf8
5b5cc6c0e4d2b4197774daf8- 1TRUEtrue
- 2FALSE Answer & Explanation Answer:false
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Answer : 1. "TRUE"
Explanation :
Answer: A) TRUE Explanation: The given series follows, 2 2 x 2 = 4 4 x 3 = 12 12 x 4 = 48 48 x 5 = 240.
Q: Milk and water are mixed in a vessel A as 4:1 and in vessel B as 3:2. For vessel C, if one takes equal quantities from A and B, find the ratio of milk to water in C. 1122 05b5cc6c7e4d2b4197774dec8
5b5cc6c7e4d2b4197774dec8- 11:9false
- 29:1false
- 33:7false
- 47:3true
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Answer : 4. "7:3"
Explanation :
Answer: D) 7:3 Explanation: Ratio of Milk and water in a vessel A is 4 : 1 Ratio of Milk and water in a vessel B is 3 : 2 Ratio of only milk in vessel A = 4 : 5 Ratio of only milk in vessel B = 3 : 5 Let 'x' be the quantity of milk in vessel C Now as equal quantities are taken out from both vessels A & B => 4/5 : 3/5 x 3/5-x x - 4/5 => 35-xx-45 = 11 (equal quantities) => x = 7/10 Therefore, quantity of milk in vessel C = 7 => Water quantity = 10 - 7 = 3 Hence the ratio of milk & water in vessel 3 is 7 : 3
Q: Order of basicity of amines in gaseous state? 1122 05b5cc67ee4d2b4197774c274
5b5cc67ee4d2b4197774c274- 12'> 1'> 3' > NH3false
- 23' > 2' > 1'> NH3true
- 31' > 2' > 3'> NH3false
- 42'> 3'> 1' > NH3false
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Answer : 2. "3' > 2' > 1'> NH3"
Explanation :
Answer: B) 3' > 2' > 1'> NH3 Explanation: The order of basicity in ammonia is different in gaseous phases vs. aqueous phases due to hydrogen bonding. So in gaseous phases it's the well known: 3' > 2' > 1'> NH3. Just so we're on the same page, this is due to the inductive effect of electron donating alkyl groups--they destabilize the lone pair on nitrogen atom, making nitrogen more basic. But in aqueous phase, the order is slightly different: 2'> 1'> 3' > NH3.
Q: Consent of the People means 1122 05b5cc6b0e4d2b4197774d292
5b5cc6b0e4d2b4197774d292- 1All the Peoplefalse
- 2Majority of Peopletrue
- 3Leader of the Peoplefalse
- 4A few Peoplefalse
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Answer : 2. "Majority of People"
Explanation :
Answer: B) Majority of People Explanation: Consent of the People means the Majority of People, as expressed by votes in elections. Consent of the governed refers to the idea that a government's legitimacy and moral right to use state power is only justified and lawful when consented to by the people or society over which that political power is exercised.
Q: What process never occurs in interphase? 1122 05b5cc62ae4d2b4197774b8c7
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Answer :
Explanation :
Absence of cell division is the process that never comes in interphase.
Q: According to Forbes, Who has become Asia’s richest person in the year 2017? 1122 05b5cc6bfe4d2b4197774da47
5b5cc6bfe4d2b4197774da47- 1Jeff Bezosfalse
- 2Hui Ka Yanfalse
- 3Mukesh Ambanitrue
- 4Bill Gatesfalse
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Answer : 3. "Mukesh Ambani"
Explanation :
Answer: C) Mukesh Ambani Explanation: Reliance Industries Chairman Mukesh Ambani overtook China’s Hui Ka Yan to become Asia’s richest person with a total wealth of $42.1 billion. According to Forbes’ real time billionaire’s list, Ambani's personal wealth rose by $466 million in 2017.
Q: 3/4 divided by 2 is 1121 05b5cc666e4d2b4197774bed0
5b5cc666e4d2b4197774bed0- 13/2false
- 22/3false
- 38/3false
- 43/8true
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Answer : 4. "3/8"
Explanation :
Answer: D) 3/8 Explanation: 3/4 divided by 2 = 3/4/2 = 3/4x2 = 3/8. Hence, 3/4 divided by 2 is equal to 3/8.
Q: What is the least number of squares tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad ? 1121 05b5cc723e4d2b4197774f65e
5b5cc723e4d2b4197774f65e- 1844false
- 2814true
- 3840false
- 4820false
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Answer : 2. "814"
Explanation :
Answer: B) 814 Explanation: Length of largest tile = H.C.F. of 1517 cm and 902 cm = 41 cm.Area of each tile = (41 x 41) sq.cm Required number of tiles =1517 x 902/(41 x 41) = 814.