IIT JEE Practice Question and Answer
8Q: According to a survey, which country has become the second largest smartphone market in the world? 1312 05b5cc6bfe4d2b4197774da92
5b5cc6bfe4d2b4197774da92- 1Japanfalse
- 2Chinafalse
- 3Indiatrue
- 4USAfalse
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Answer : 3. "India"
Explanation :
Answer: C) India Explanation: According to a Report by analyst firm Canalys, India has become the second largest smartphone market in the world.
Q: What do genes code for? 1311 05b5cc6aae4d2b4197774cf51
5b5cc6aae4d2b4197774cf51- 1Ptoteinstrue
- 2DNAfalse
- 3RNAfalse
- 4Nonefalse
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Answer : 1. "Ptoteins"
Explanation :
Answer: A) Ptoteins Explanation: The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.
Q: I have a face but no eyes Puzzle 1310 05b5cc626e4d2b4197774b83a
5b5cc626e4d2b4197774b83a- Show AnswerHide Answer
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Answer :
Explanation :
A Clock has a face, but no eyes. It has 3 hands i.e, hours, minutes and seconds hands but no arms.
Q: A sum of Rs. 4,300 is distributed among M, N and O, such that M receives 25% more than N and N receives 25% less than O. What is O’s share in the amount? 1310 05b5cc6b0e4d2b4197774d2d0
5b5cc6b0e4d2b4197774d2d0- 11564false
- 21600true
- 31632false
- 41714false
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Answer : 2. "1600"
Explanation :
Answer: B) 1600 Explanation: Let O's share = Rs. P => N's share = 75100 x P = 3P4 M's share = 54 x 3P4 = 15P16 15P16 + 3P4 + P = 4300=> P = 4300 x 1643 = 1600
Q: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1307 05b5cc6c7e4d2b4197774de9b
5b5cc6c7e4d2b4197774de9b- 18 : 62.5true
- 255 : 8false
- 38 : 65false
- 464.4 : 9false
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Answer : 1. "8 : 62.5"
Explanation :
Answer: A) 8 : 62.5 Explanation: Article I Article II -20 25% 5% 20% 25% 4 : 5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) = 6.25 Therefore the ratio of selling price = 8 : 62.5
Q: Who of the following appointed as head of Punjab National Bank ? 1307 05b5cc6e1e4d2b4197774ec06
5b5cc6e1e4d2b4197774ec06- 1Dinabandu Mohapatrafalse
- 2Usha Ananthasubramanianfalse
- 3R A Narayanfalse
- 4Sunil Mehtatrue
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Answer : 4. "Sunil Mehta"
Explanation :
Answer: D) Sunil Mehta Explanation: Dinabandu Mohapatra for - Bank of India Usha Ananthasubramanian for - Allahabad Bank R A Sankara Narayan for - Vijaya Bank
Q: Which of the following is an Autoimmune disease? 1305 05b5cc6a6e4d2b4197774cd18
5b5cc6a6e4d2b4197774cd18- 1Systematic lupus erythematosustrue
- 2Acute anaphylaxisfalse
- 3Farmer's lungfalse
- 4A heart attackfalse
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Answer : 1. "Systematic lupus erythematosus"
Explanation :
Answer: A) Systematic lupus erythematosus Explanation: An autoimmune disease is a condition in which your immune system mistakenly attacks your body. The immune system normally guards against germs like bacteria and viruses. When it senses these foreign invaders, it sends out an army of fighter cells to attack them. Normally, the immune system can tell the difference between foreign cells and your own cells. In an autoimmune disease, the immune system mistakes part of your body — like your joints or skin — as foreign. It releases proteins called autoantibodies that attack healthy cells. Some autoimmune diseases target only one organ. Type 1 diabetes damages the pancreas. Other diseases, like lupus, affect the whole body. Hence, Systematic lupus erythematosus is an autoimmune disease that affects multiple organs.
Q: A class consists of both boys and girls along with a teacher. After a class, the teacher drinks 9 litres of water, a boy drinks 7 litres of water and a girl drinks 4 litres of water. If after a class 42 litres of water was consumed, find the number of girls in the class ? 1305 05b5cc745e4d2b4197774fa2c
5b5cc745e4d2b4197774fa2c- 18false
- 26false
- 35false
- 43true
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Answer : 4. "3"
Explanation :
Answer: D) 3 Explanation: Given teacher drinks 9 ltrLet number of boys be 'A'.Let number of girls be 'B'.Boy drinks 7 ltr and girl drinks 4 ltrAfter class total water consumed = 42 ltrThen,9 + 7A + 4B = 42=> 7A + 4B = 33By trial and error method,The only integers which satisfy the equation is A = 3 and B = 3Therefore, number of girls in the class = 3.

