IIT JEE Practice Question and Answer
8Q: Which of the following is a characteristic of the Ascomycota? 1672 05b5cc619e4d2b4197774b74e
5b5cc619e4d2b4197774b74e- 1Sac formationtrue
- 2Zygospore formationfalse
- 3Basidium formationfalse
- 4All of the abovefalse
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Answer : 1. "Sac formation"
Explanation :
Answer: A) Sac formation Explanation: Ascomycota is a division or phylum of the kingdom Fungi that, together with the Basidiomycota, form the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. Hence, Sac formation is a characteristic of the Ascomycota fungi.
Q: A shopkeeper sells two articles at Rs.1000 each, making a profit of 30% on the first article and a loss of 20% on the second article. Find the net profit or loss that he makes ? 1671 05b5cc6e2e4d2b4197774ec20
5b5cc6e2e4d2b4197774ec20- 10.85 %false
- 20.95 %true
- 31.0 %false
- 41.3 %false
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Answer : 2. "0.95 %"
Explanation :
Answer: B) 0.95 % Explanation: SP of first article = 1000Profit = 30%CP = (SP)x[100/(100+P)] = 10000/13 SP of second article = 1000Loss = 20%CP = (SP)x[100/(100-L)] = 5000/4 = 1250 Total SP = 2000 Total CP = 10000/13 + 1250 = 2019.23 CP is more than SP, he makes a loss. Loss = CP-SP = 2019.23 - 2000 = 19.23Loss Percent = [(19.23)/(2019.23)]x100 = 0.95 %.
Q: The preamble to our constitution provided that India is 1671 05b5cc670e4d2b4197774c04d
5b5cc670e4d2b4197774c04d- 1a sovereign, socialist, secular and democratic republictrue
- 2a sovereign republic with a socialist pattern of societyfalse
- 3a socialist, secular and democratic republicfalse
- 4a sovereign, socialist and democratic republicfalse
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Answer : 1. "a sovereign, socialist, secular and democratic republic"
Explanation :
Answer: A) a sovereign, socialist, secular and democratic republic Explanation: The Preamble was adopted with the constitution in the constituent assembly. The Preamble proclaims the solemn resolution of the people of India to constitute India into a 'Sovereign socialist secular democratic republic'.
Q: Absolute value of 9? 1671 05b5cc675e4d2b4197774c143
5b5cc675e4d2b4197774c143- 10false
- 29true
- 38false
- 4-9false
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Answer : 2. "9"
Explanation :
Answer: B) 9 Explanation: Absolute value of a number : It means that the distance of a number from 0 on a number line. Here absolute value of 9 is that on a number line 9 is 9 units away from 0. Hence its absolute value is 9. Similarly, absolute value of -9 means -9 is also 9 units away from the 0 on number line. Hence, absolute value of -9 is also 9. Hence, the absolute value of 9 is 9.
Q: What is the first term of an arithmetic progression of positive integers ? (I) Sum of the squares of the first and the second term is 116. (II)The fifth term is divisible by 7. 1671 05b5cc705e4d2b4197774f21b
5b5cc705e4d2b4197774f21b- 1Only a is sufficienttrue
- 2Only b is sufficientfalse
- 3Both a & b are necessaryfalse
- 4Nonefalse
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Answer : 1. "Only a is sufficient"
Explanation :
Answer: A) Only a is sufficient Explanation: The sum of square of two no is 116 i.e no lie 1-11, because 11x11 =121 which is greater than 116 again after cheaking all possible pair of no only 4 and 10 satisfy this condsn , again the progression is of positive integer so 10 cant not be 1st termso the 1st term is 4,but from the 2nd we cant able to find the 1st term so only 1st statement is sufficient to answer the question
Q: What will come in place of the question mark(?) in the following question ? 56% of 870 + 82% of 180 = 32% of 90 + ? 1671 05b5cc6c5e4d2b4197774dd37
5b5cc6c5e4d2b4197774dd37- 1777false
- 2666false
- 3606true
- 4789false
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Answer : 3. "606"
Explanation :
Answer: C) 606 Explanation: 56% of 870 = 56x870/100 = 487.20 82% of 180 = 82x180/100 = 147.60 32% of 90 = 32x90/100 487.20 + 147.6 - 28.8 = ? ? = 634.8 - 28.8 ? = 606.
Q: Number Challenge 1670 05b5cc6d3e4d2b4197774e4f0
5b5cc6d3e4d2b4197774e4f0- 19false
- 211true
- 313false
- 415false
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Answer : 2. "11"
Explanation :
Answer: B) 11 Explanation: Half the Product of Number in the upper & lower box gives the number in the middle box. i.e. 18 x 4/2 = 36 15 x 6/2 = 45 In the same way 8 x N/2 = 44 => N = 11.
Q: What happens during the S-phase of the cell cycle? 1670 05b5cc69fe4d2b4197774c9cd
5b5cc69fe4d2b4197774c9cd- 1cell divisionfalse
- 2cell growthfalse
- 3DNA replicationtrue
- 4protein and enzyme synthesisfalse
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Answer : 3. "DNA replication"
Explanation :
Answer: C) DNA replication Explanation: S-phase (synthesis phase) is the part of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase. Precise and accurate DNA replication is necessary to prevent genetic abnormalities which often lead to cell death or disease.

