IIT JEE Practice Question and Answer
8Q: 70000 a year is how much an hour? 1829 05b5cc626e4d2b4197774b886
5b5cc626e4d2b4197774b886- 180false
- 28true
- 30.8false
- 40.08false
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Answer : 2. "8"
Explanation :
Answer: B) 8 Explanation: Given for year = 70000 => 365 days = 70000 => 365 x 24 hours = 70000 => 1 hour = ? 70000/365x24 = 7.990 = 8
Q: Opening in a wall to let in air or light 1829 05b5cc699e4d2b4197774c70b
5b5cc699e4d2b4197774c70b- 1Ceilingfalse
- 2Doorfalse
- 3Windowtrue
- 4All the abovefalse
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Answer : 3. "Window"
Explanation :
Answer: C) Window Explanation: The Opening in a wall to let in air or light is nothing but a Window.
Q: A class has 8 football players. A 5-member team and a captain will be selected out of these 8 players. How many different selections can be made ? 1828 05b5cc6d0e4d2b4197774e38a
5b5cc6d0e4d2b4197774e38a- 1210false
- 2168true
- 31260false
- 410!/6!false
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Answer : 2. "168"
Explanation :
Answer: B) 168 Explanation: we can select the 5 member team out of the 8 in 8C5 ways = 56 ways. The captain can be selected from amongst the remaining 3 players in 3 ways. Therefore, total ways the selection of 5 players and a captain can be made = 56x3 = 168 ways. (or) Alternatively, A team of 6 members has to be selected from the 8 players. This can be done in 8C6 or 28 ways. Now, the captain can be selected from these 6 players in 6 ways. Therefore, total ways the selection can be made is 28x6 = 168 ways.
Q: How many Species go Extinct Every Day? 1827 05b5cc6afe4d2b4197774d263
5b5cc6afe4d2b4197774d263- Show AnswerHide Answer
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Answer :
Explanation :
About 150 - 200 species of plant, insect, bird and mammal become extinct every day or 24 hrs. This is not an accurate but an estimation by U.N. Convention on Biological Diversity and Global Extinction Rates. It is also said that current extinctions were 'up to 100 times higher than the background rate.'
Q: Who is the richest person in the world 2018? 1827 05b5cc60de4d2b4197774b5ff
5b5cc60de4d2b4197774b5ff- 1Jeff Bezostrue
- 2Bill Gatesfalse
- 3Warren Buffetsfalse
- 4Mark Zuckerbergfalse
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Answer : 1. "Jeff Bezos"
Explanation :
Answer: A) Jeff Bezos Explanation: Jeff Bezos is the richest person in modern history. The Amazon.com Inc. founder’s net worth broke $150 billion in New York on 16th July 2018 morning, according to the Bloomberg Billionaires Index. That’s about $55 billion more than Microsoft Corp. co-founder Bill Gates, the world’s second-richest person.
Q: Cancer is caused by 1826 05b5cc6e3e4d2b4197774ecac
5b5cc6e3e4d2b4197774ecac- 1Loss of immunity of cellsfalse
- 2Uncontrolled meiosisfalse
- 3Uncontrolled mitosistrue
- 4Rupturing of cellsfalse
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Answer : 3. "Uncontrolled mitosis"
Explanation :
Answer: C) Uncontrolled mitosis Explanation:
Q: Which of the following is a characteristic of all minerals? 1826 05b5cc68ee4d2b4197774c40b
5b5cc68ee4d2b4197774c40b- 1Crystalline solidsfalse
- 2Minerals are inorganicfalse
- 3All minerals are formed in a natural processfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: Common properties of Minerals are : 1. All minerals are formed in a natural process. 2. Minerals are inorganic 3. Minerals are crystalline solids. 4. Every mineral is an element or compound with a definite chemical composition.
Q: A government subsidy to the producers of a product 1826 05b5cc62ce4d2b4197774b8fd
5b5cc62ce4d2b4197774b8fd- 1reduces product demandfalse
- 2increases product supplytrue
- 3reduces product supplyfalse
- 4increases product demandfalse
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Answer : 2. "increases product supply"
Explanation :
Answer: B) increases product supply Explanation:

