IIT JEE Practice Question and Answer
8Q: Who is the first richest person in India? 1040 05b5cc69ae4d2b4197774c787
5b5cc69ae4d2b4197774c787- 1Mukesh Ambanitrue
- 2Azim Premjifalse
- 3Dilip Shangvifalse
- 4Lakshmi Mittalfalse
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Answer : 1. "Mukesh Ambani"
Explanation :
Answer: A) Mukesh Ambani Explanation: According to 2018 January reports, Mukesh Ambani is the first richest person in India being 18th in the world, followed by Azim Premji and S.P. Hinduja in second and third places.
Q: Name the two Indian companies that have been named in the list of world's most ethical companies by American think tank Ethisphere Institute. 1038 05b5cc715e4d2b4197774f440
5b5cc715e4d2b4197774f440- 1Dabur and Tatafalse
- 2Mahindra and Tatafalse
- 3Patanjali and Daburfalse
- 4Tata Steel and Wiprotrue
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Answer : 4. "Tata Steel and Wipro"
Explanation :
Answer: D) Tata Steel and Wipro Explanation: Two Indian companies, Tata SteelBSE and Wipro have been named in the list of world’s most ethical companies by American think tank Ethisphere Institute. Ethisphere honors those companies who recognize their role in society to influence and drive positive change in the business community and organizations around the world. In 2017, 124 honorees were spanning five continents, 19 countries, and 52 industry sectors. Wipro is one of the two information technology companies named in the list, the other being Xerox Corporation.
Q: Why are hydrocarbons insoluble in water? 1038 05b5cc690e4d2b4197774c474
5b5cc690e4d2b4197774c474- Show Answer
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Answer :
Explanation :
We know that polar substances are soluble in polar solvents and non polar substances are soluble in non-polar solvents only. Here the hydrocarbons are non-polar molecular substances and water is a polar solvent. So water can't dissolve hydrocabons. Hence, as hydrocarbons are non-polar substances, they are insoluble in water as it is a highly polar solvent.
Q: Guess the Number missed in Number Challenge ? 1037 05b5cc6d1e4d2b4197774e3b1
5b5cc6d1e4d2b4197774e3b1- 13false
- 25true
- 39false
- 41false
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Answer : 2. "5"
Explanation :
Answer: B) 5 Explanation: Sum of numbers in all individual boxes must be equal. Here sum must be equal to 30. => x + 14 + 9 + 2 = 30 => x = 5.
Q: What organelle is responsible for photosynthesis? 1037 05b5cc62ce4d2b4197774b929
5b5cc62ce4d2b4197774b929- 1mitochondriafalse
- 2Cytoplasmfalse
- 3Chloroplaststrue
- 4Ribosomesfalse
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Answer : 3. "Chloroplasts"
Explanation :
Answer: C) Chloroplasts Explanation: Chloroplasts are organelles in plant and bacteria cells that contain the chlorophyll is responsible for photosynthesis.
Q: The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and 15 as remainder. What is the smaller number ? 1036 05b5cc6dbe4d2b4197774e94b
5b5cc6dbe4d2b4197774e94b- 1270true
- 21270false
- 3350false
- 4720false
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Answer : 1. "270"
Explanation :
Answer: A) 270 Explanation: Let the smallest number be x.Then larger number = (x + 1365)x + 1365 = 6x + 15= 5x = 1350 x = 270Smaller number = 270.
Q: Simplify the following : 4 15 × 3 13 + ? = 20% of 120 1036 05b5cc6a8e4d2b4197774ce71
5b5cc6a8e4d2b4197774ce71- 110true
- 224false
- 336false
- 440false
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Answer : 1. "10"
Explanation :
Answer: A) 10 Explanation: Given equation can be written as 215 x 103 + ? = 24=> 14 + ? = 24=> ? = 24 - 14=> ? = 10
Q: A salesman calculated his profit on the marked price and finds it to be 30%. He forgets the fact that he gave a discount of 20%. What is his actual profit percentage? 1036 05b5cc6bae4d2b4197774d7ad
5b5cc6bae4d2b4197774d7ad- 1260/11%false
- 218.4%false
- 322.5%false
- 4100/7%true
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Answer : 4. "100/7%"
Explanation :
Answer: D) 100/7% Explanation: When profit is calculated on Marked Price (M.P) then, C.P = M.P - P% Let M.P = 100 => C.P = 100 - 30 = 70 But S.P = Rs. 80 as he gave 20% discount, Now, Actual Profit = 80-7070x100 = 100/7 %