IIT JEE Practice Question and Answer
8Q: The ratio between the number of sheep and the number of horses at the Stewar farm is 4 to 15. If each of horse is fed 110 ounces of horse food per day and the farm needs a total 13200 ounces of horse food per day. what is number sheep in the form ? 1507 05b5cc754e4d2b4197774fb7c
5b5cc754e4d2b4197774fb7c- 132true
- 236false
- 344false
- 452false
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Answer : 1. "32"
Explanation :
Answer: A) 32 Explanation: Given ratio of number of sheep and horses = 4 : 15Let number of sheep and horses are 4k and 15k Number of horses = 13200/110 = 120 Now 15K = 120 and k = 8 Number of sheep = 4k = (4 x 8) = 32
Q: A is the father of B. But B is not the son of A. Then what is B to A? 1506 05b5cc695e4d2b4197774c52f
5b5cc695e4d2b4197774c52f- 1Grandfatherfalse
- 2Son-in-lawfalse
- 3Granddaughterfalse
- 4Daughtertrue
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Answer : 4. "Daughter"
Explanation :
Answer: D) Daughter Explanation: The relation is father and daughter. As we go with male gender, will be son of A. But it is given in the question that B is not the son of A. Hence, te only possile is B is female and B is daughter of A.
Q: What has 3 feet but cannot walk? 1505 05b5cc672e4d2b4197774c0cd
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Answer :
Explanation :
We know that 1 yard = 3 feet. A yardstick which is used for measurement has 3 feet long but it cannot walk.
Q: The energy associated with motion is called 1505 05b5cc62ae4d2b4197774b89a
5b5cc62ae4d2b4197774b89a- 1Potential energyfalse
- 2Kinetic energytrue
- 3Both A & Bfalse
- 4None of the abovefalse
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Answer : 2. "Kinetic energy"
Explanation :
Answer: B) Kinetic energy Explanation: Energy can be either a potential energy or a kinetic energy. The energy associated with motion is called Kinetic energy and it can be stored. And the energy associated with position is called Potential energyand it cannot be stored.
Q: Simplify 2392-21+8-72=?2 1505 05b5cc6b9e4d2b4197774d775
5b5cc6b9e4d2b4197774d775- 14false
- 25false
- 36true
- 49false
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Answer : 3. "6"
Explanation :
Answer: C) 6 Explanation: ?2 = 2×78-21+8+49-148= 57 - 21=36=> ? = ±6
Q: Which occurs during transcription? 1504 05b5cc611e4d2b4197774b656
5b5cc611e4d2b4197774b656- 1Proteins are producedfalse
- 2Ribosomes producesfalse
- 3DNA information is copied to RNAtrue
- 4All of the abovefalse
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Answer : 3. "DNA information is copied to RNA"
Explanation :
Answer: C) DNA information is copied to RNA Explanation: Transcription is the process of copying the genetic material or information that is the DNA to messenger RNA (mRNA.
Q: Ozone holes are more pronounced at the 1504 05b5cc670e4d2b4197774c048
5b5cc670e4d2b4197774c048- 1Tropic of cancerfalse
- 2Polestrue
- 3Equatorfalse
- 4Tropic of capricornfalse
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Answer : 2. "Poles"
Explanation :
Answer: B) Poles Explanation:
Q: An alloy of copper and bronze weight 50g. It contains 80% Copper. How much copper should be added to the alloy so that percentage of copper is increased to 90%? 1504 05b5cc6aee4d2b4197774d179
5b5cc6aee4d2b4197774d179- 145 gmfalse
- 250 gmtrue
- 355 gmfalse
- 460 gmfalse
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Answer : 2. "50 gm"
Explanation :
Answer: B) 50 gm Explanation: Initial quantity of copper =80100 x 50 = 40 g And that of Bronze = 50 - 40 = 10 g Let 'p' gm of copper is added to the mixture => 50 + p x 90100 = 40 + p => 45 + 0.9p = 40 + p => p = 50 g Hence, 50 gms of copper is added to the mixture, so that the copper is increased to 90%.