IIT JEE Practice Question and Answer
8Q: A watch which gains uniformly is 2 minutes low at noon on Tuesday and is 4 min 48 sec fast at 2 p.m. on the following Tuesday. When was it correct ? 1756 05b5cc761e4d2b4197774fd0c
5b5cc761e4d2b4197774fd0c- 112 p.m. on Wednesdayfalse
- 22 p.m. on Thursdaytrue
- 33 p.m. on Thursdayfalse
- 42 p.m. on Wednesdayfalse
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Answer : 2. "2 p.m. on Thursday"
Explanation :
Answer: B) 2 p.m. on Thursday Explanation: Time from 12 p.m. on Tuesday to 2 p.m. on the following Tuesday = 7 days 2 hours.= 170 hours.The watch gains = (2 + 4 x 4/5) min= 34/5 min. in 170 hrs.Now, 34/5 min are gained in 170 hrs.Then, 2 min are gained in (170 x 5/34 x 2) hrs.Watch is correct after 2 days 2 hrs after 12 p.m. on Tuesday, i.e., it will be correct at 2 p.m. on Thursday.
Q: What is the smallest number by which 2880 must be divided in order to make it into a perfect square ? 1756 05b5cc74fe4d2b4197774fb0d
5b5cc74fe4d2b4197774fb0d- 12false
- 23false
- 34false
- 45true
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Answer : 4. "5"
Explanation :
Answer: D) 5 Explanation: By trial and error method, we get2880/3 = 960 is not a perfect square2880/4 = 720 is not a perfect square2880/5 = 576 which is perfect square of 24Hence, 5 is the least number by which 2880 must be divided in order to make it into a perfect square.
Q: Appellate jurisdiction refers to 1755 05b5cc64ae4d2b4197774bc2f
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Answer :
Explanation :
Appellate jurisdiction refers to the power of a higher court to review decisions and change outcomes of decisions of lower courts.
Q: 45 men working 9 hours per day dig 40 m deep. How many extra men should be put to dig to a depth of 56 m working 7 hours per day ? 1755 05b5cc6dae4d2b4197774e8c8
5b5cc6dae4d2b4197774e8c8- 136true
- 261false
- 348false
- 454false
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Answer : 1. "36"
Explanation :
Answer: A) 36 Explanation: (45 x 9)/40 = (M x 7)/56 => M = 81 => 81 – 45 = 36
Q: Telengana creation as in independent state is primarily the outcome of _____ ? 1754 05b5cc6d5e4d2b4197774e601
5b5cc6d5e4d2b4197774e601- 116th Lok Sabhafalse
- 215th Lok Sabhatrue
- 314th Lok Sabhafalse
- 413 Lok Sabhafalse
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Answer : 2. "15th Lok Sabha"
Explanation :
Answer: B) 15th Lok Sabha Explanation:
Q: Doctor : Nurse :: ? : Follower 1754 05b5cc69ae4d2b4197774c77d
5b5cc69ae4d2b4197774c77d- 1Managerfalse
- 2Employerfalse
- 3Workerfalse
- 4Leadertrue
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Answer : 4. "Leader"
Explanation :
Answer: D) Leader Explanation: Here the second one follows the first one. That is a nurse follows a doctor and similarly, a follower follows a leader. Hence, Doctor : Nurse :: Leader : Follower.
Q: With similar triangles the corresponding angles are equal. 1753 05b5cc69ce4d2b4197774c834
5b5cc69ce4d2b4197774c834- 1TRUEtrue
- 2FALSE Answer & Explanation Answer:false
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Answer : 1. "TRUE"
Explanation :
Answer: A) TRUE Explanation: The given statement about similar triangles is TRUE. Similar Triangles Theorem :: Similar triangles are two triangles with corresponding angles of equal measure, and the ratios of their corresponding sides' lengths are equal.
Q: Basophils increase in number when parasitic invasion occurs. 1753 05b5cc690e4d2b4197774c43d
5b5cc690e4d2b4197774c43d- 1TRUEfalse
- 2FALSEtrue
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Answer : 2. "FALSE"
Explanation :
Answer: B) FALSE Explanation: FALSE. Basophils number will not be increased when parasitic invasion occurs. Basophils are a type of white blood cell. Although they're produced in the bone marrow, they're found in many tissues throughout your body. They're part of your immune system and play a role in its proper function. Basophils appear in many specific kinds of inflammatory reactions, particularly those that cause allergic symptoms. If your basophil level is low, it may be due to a severe allergic reaction. Basophils contain anticoagulant heparin, which prevents blood from clotting too quickly. They also contain the vasodilator histamine, which promotes blood flow to tissues.