IIT JEE Practice Question and Answer
8Q: Two girls ate dinner together. After that they both ordered iced tea. One girl drank them very fast and had finished five in the time it took the other to drink just one. The girl who drank one died while the other survived. However, all of the drinks that were served turned out to contain poison. How did the girl who drank the most survive? 1821 05b5cc67be4d2b4197774c1ea
5b5cc67be4d2b4197774c1ea- Show AnswerHide Answer
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Answer :
Explanation :
The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink. Hence, the girl who died, drunk the tea after the ice melted. So, she was died.
Q: The term facultative anaerobe refers to an organism that 1820 05b5cc633e4d2b4197774b9d7
5b5cc633e4d2b4197774b9d7- 1Uses oxygen or grows without oxygen.true
- 2Requires less oxygen than is present in air.false
- 3Prefers to grow without oxygen.false
- 4Is killed by oxygen.false
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Answer : 1. "Uses oxygen or grows without oxygen."
Explanation :
Answer: A) Uses oxygen or grows without oxygen. Explanation: The term facultative anaerobe refers to an organism that which uses oxygen when it is present or grows without oxygen when it is not there.
Q: This phenomenon is sometimes referred to as the southern lights. 1820 05b5cc670e4d2b4197774c02f
5b5cc670e4d2b4197774c02f- 1Aurora australistrue
- 2Aurora borealisfalse
- 3Aurora polarisfalse
- 4Aurora coriolisfalse
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Answer : 1. "Aurora australis"
Explanation :
Answer: A) Aurora australis Explanation: Polar lights (aurora polaris) are a natural phenomenon found in both the northern and southern hemispheres that can be truly awe inspiring. Northern lights are also called by their scientific name, aurora borealis, and Southern lights are called aurora australis.
Q: Study of fishes is called 1820 05b5cc67be4d2b4197774c1db
5b5cc67be4d2b4197774c1db- 1Amphiologyfalse
- 2Phylumologyfalse
- 3Zoologyfalse
- 4Ichthyologytrue
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Answer : 4. "Ichthyology"
Explanation :
Answer: D) Ichthyology Explanation: Ichthyology is the branch of biology devoted to the study of fish. It is also known as Fish science which includes bony fishes (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha).
Q: Which of the following is a healthy blood pressure level? 1820 05b5cc645e4d2b4197774bbaf
5b5cc645e4d2b4197774bbaf- 1120/80true
- 2140/90false
- 3135/75false
- 4130/70false
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Answer : 1. "120/80"
Explanation :
Answer: A) 120/80 Explanation: A normal reading would be any blood pressure below 120/80 mm Hg and above 90/60 mm Hg in an adult. If you're in the normal range, no medical intervention is needed. However, you should maintain a healthy lifestyle and healthy weight to help prevent hypertension from developing.
Q: If you write down all the numbers from 1 to 100, then how many times do you write 4 ? 1820 05b5cc723e4d2b4197774f68b
5b5cc723e4d2b4197774f68b- 111false
- 220true
- 317false
- 414false
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Answer : 2. "20"
Explanation :
Answer: B) 20 Explanation: 4, 14, 24, 34, 44, 54, 64, 74, 84, 94 => has 11 number of (4's)40, 41, 42, 43, 45, 46, 47, 48, 49 => has 9 number of (4's)So, totally (11 + 9 = 20) number of 4's in 1 to 100.
Q: Consumer protection laws are meant to 1820 05b5cc688e4d2b4197774c345
5b5cc688e4d2b4197774c345- Show AnswerHide Answer
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Answer :
Explanation :
Protect the consumer from the seller who cheat to sell his product. The FTC’s Bureau of Consumer Protection stops unfair, deceptive and fraudulent business practices by collecting complaints and conducting investigations, suing companies and people that break the law, developing rules to maintain a fair marketplace, and educating consumers and businesses about their rights and responsibilities.
Q: Simplify 39.96% of 649.85 ÷13.07 = 45.14 - ? 1820 05b5cc690e4d2b4197774c45a
5b5cc690e4d2b4197774c45a- 125true
- 226false
- 327false
- 428false
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Answer : 1. "25"
Explanation :
Answer: A) 25 Explanation: This can be easily simplified by Approximation process Given 39.96% of 649.85 ÷13.07 = 45.14 - ? can be written as 40% of 650 ÷13 = 45 - ? 40 x 65010013 = 45 - ?? = 45 - 20? = 25.

