IIT JEE Practice Question and Answer
8Q: A man spend 20% of his monthly salary on his children's education and 50% of his salary on food and transport. After Paying the rent of Rs.1000, he is left with Rs.2000. What is his monthly salary? 1330 05b5cc6bae4d2b4197774d7e9
5b5cc6bae4d2b4197774d7e9- 17000false
- 210000true
- 314000false
- 420000false
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Answer : 2. "10000"
Explanation :
Answer: B) 10000 Explanation: Let his monthly salary be 'P' 20% on children's education = 20P100 = P5 50% on food and transport = 50P100 = P2 1000 on rent => P - P5 - P2 - 1000 = 2000=> 3P = 30000=> P = 10000 Therefore, his monthly salary = Rs. 10,000
Q: Everyone has it and no one can lose it. What is it? 1329 05b5cc69fe4d2b4197774ca1e
5b5cc69fe4d2b4197774ca1e- 1Facefalse
- 2Teethfalse
- 3Hairfalse
- 4Shadowtrue
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Answer : 4. "Shadow"
Explanation :
Answer: D) Shadow Explanation:
Q: Origins of genetic variation 1328 05b5cc666e4d2b4197774beda
5b5cc666e4d2b4197774beda- 1intragenic recombinationfalse
- 2mutationfalse
- 3reticulationfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: Random mutations are the ultimate source of genetic variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances, the new alleles can be favored by natural selection. Polyploidy is an example of chromosomal mutation. Mutations are changes in the DNA. A single mutation can have a large effect. 1) mutation - an alteration in DNA sequence, various types 2) intragenic recombination - results in entirely new associations of genes not present in either parental genome. Two forms of intragenic recombination: a) crossing overb) independent assortment3) reticulation – acquisition of genetic material from unrelated or relatively unrelated sources (e.g., hybrid species, horizontal gene transfer).
Q: In how many ways can the letters of the word 'LEADER' be arranged ? 1328 05b5cc71ee4d2b4197774f58b
5b5cc71ee4d2b4197774f58b- 1360true
- 2420false
- 3576false
- 4220false
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Answer : 1. "360"
Explanation :
Answer: A) 360 Explanation: No. of letters in the word = 6No. of 'E' repeated = 2Total No. of arrangement = 6!/2! = 360
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? 1328 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 %
Q: Updated List of Cabinet Ministers of India in September 2017 ? 1326 05b5cc6c8e4d2b4197774deeb
5b5cc6c8e4d2b4197774deeb- Show AnswerHide Answer
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Answer :
Explanation :
Sr. No Minister Portfolio 1. Shri Narendra Modi Prime Minister and also in-charge of: – Ministry of Personnel – Public Grievances and Pensions – Department of Atomic Energy – Department of Space All important policy issues and all other portfolios not allocated to any Minister. 2. Shri Raj Nath Singh Minister of Home Affairs 3. Smt. Sushma Swaraj Minister of External Affairs 4. Shri Arun Jaitley - Minister of Finance – Minister of Corporate Affair 5. Shri Nitin Jairam Gadkari – Minister of Road Transport & Highway – Minister of shipping – Minister of Water Resources, River Development & Ganga Rejuvenation 6. Suresh Prabhu Minister of Commerce & Industry 7. D.V Sadananda Gowda Minister of Statistics & Programme Implementation 8. Sushri Uma Bharati Minister of Drinking Water & Sanitation 9. Nirmala Sitharaman Minister of Defence 10. Mukhtar Abbas Naqvi Minister of Minority Affairs 11. Shri Ramvilas Paswan Minister of Consumer Affairs, Food & Public Distribution 12. Maneka Sanjay Gandhi Minister of Women & Child Development 13. Shri Ananth Kumar – Minister of Chemicals & Fertilizers – Ministry of Parliamentary Affairs 14. Shri. Ravi Shankar Prasad – Minister of Law & Justice – Minister of Electronics & Information Technology 15. Shri Jagat Prakash Nadda Minister of Health & Family Welfare 16. Ashok Gajapathi Raju Pusapati Minister of Civil Aviation 17. Shri. Anant Geete Minister of Heavy Industries & Public Enterprises 18. Smt. Harsimrat Kaur Badal Minister of Food Processing Industries 19. Shri Narendra Singh Tomar – Minister of Rural Development – Minister of Panchayati Raj – Minister of Drinking Water & Sanitation 20. Shri Chaudhary Birender Singh Minister of Steel 21. Shri Jual Oram Minister of Tribal Affairs 22. Shri Radha Mohan Singh Minister of Agriculture & Farmers Welfare 23. Shri Thawar Chand Gehlot Minister of Social Justice & Empowerment 24. Smt. Smriti Irani – Minister of Textiles – Minister of Information & Broadcasting 25. Dr Harsh Vardhan – Minister of Science & Technology – Minister of Earth Sciences – Minister of Environment, Forest & Climate Change 26. Prakash Javadekar Human Resource Development 27. Piyush Goyal – Minister of Railways – Minster of Coal 28. Dharmendra Pradhan – Minister of Petroleum & Natural Gas – Minister of Skill Development & Enterprise
Q: Who won the world’s largest pre-college science competition in the US in the environmental engineering category for his project on biodegradation of pesticides ? 1326 05b5cc6dce4d2b4197774e9b0
5b5cc6dce4d2b4197774e9b0- 1Shanmuga Sundaramfalse
- 2Prashant Ranganathantrue
- 3Suresh Kumarfalse
- 4Vijay Ragunathanfalse
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Answer : 2. "Prashant Ranganathan"
Explanation :
Answer: B) Prashant Ranganathan Explanation: An Indian boy has won the world’s largest pre-college science competition in the US in the environmental engineering category for his project on biodegradation of pesticides. Prashant Ranganathan, a 12th grader from Jamshedpur, alongwith over 20 high school students from various parts of India, participated in the Intel International Science and Engineering Fair.
Q: How long is a term in the house of representatives? 1325 05b5cc62ce4d2b4197774b933
5b5cc62ce4d2b4197774b933- 15false
- 22true
- 34false
- 46false
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Answer : 2. "2"
Explanation :
Answer: B) 2 Explanation: Members of the House of Representatives serve two-year terms and are considered for reelection every even year.

