IIT JEE Practice Question and Answer
8Q: What Asks But Never Answers? 1679 05b5cc6b1e4d2b4197774d2ef
5b5cc6b1e4d2b4197774d2ef- 1Teacherfalse
- 2Telephonefalse
- 3Letterfalse
- 4Owltrue
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Answer : 4. "Owl"
Explanation :
Answer: D) Owl Explanation: An owl. "What noise does an owl make? The sound an Owl makes, it sounds like, "Who?" to our ears. They sounds entire lives asking the same question, but they'll never give any answers.
Q: Is C2 Paramagnetic or Diamagnetic? 1679 05b5cc6b3e4d2b4197774d3d7
5b5cc6b3e4d2b4197774d3d7- 1Paramagneticfalse
- 2Diamagnetictrue
- 3Ferromagneticfalse
- 4Can't be determinedfalse
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Answer : 2. "Diamagnetic"
Explanation :
Answer: B) Diamagnetic Explanation: Paramagnetic Molecules :: If the Electronic configuration of a molecule has any unpaired electrons, then that molecule is said to be Paramagnetic. Diamagnetic Molecules :: If the Electronic configuration of a molecule has only paired or spin paired electrons, then that molecule is said to be Diamagnetic. Here the molecule C2 has all paired electrons in its electronic configuration. So C2 is Diamagnetic. Whereas, B2 molecule has unpaired electrons. So B2 is Paramegnetic.
Q: A shopkeeper sold a mobile phone for Rs. 12000. Had he offered discount of 10% on the selling price, there would be a loss of 4%. What is the cost price of that Mobile phone? 1679 05b5cc6bce4d2b4197774d8a7
5b5cc6bce4d2b4197774d8a7- 1Rs. 12,500false
- 2Rs. 11,250true
- 3Rs. 12,750false
- 4Rs. 11,680false
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Answer : 2. "Rs. 11,250"
Explanation :
Answer: B) Rs. 11,250 Explanation: Given that SP = Rs. 12000 - 10% = Rs. 10,800 Loss% = 4 We know that, C.P = 100/(100 - Loss%) x 100 => 100/100-4 x 10800 => 1080000/96 C.P = Rs. 11,250
Q: What percent is 120 of 85 ? 1678 05b5cc6dde4d2b4197774ea0a
5b5cc6dde4d2b4197774ea0a- 1133.33 %false
- 2141.17 %true
- 3145.54 %false
- 4139.29 %false
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Answer : 2. "141.17 %"
Explanation :
Answer: B) 141.17 % Explanation: Px85100=120 => p = 12000/85 = 141.17 %
Q: Which best describes an element? 1678 05b5cc699e4d2b4197774c746
5b5cc699e4d2b4197774c746- 1An element is composed of identical atomsfalse
- 2A pure substancefalse
- 3a material that has consistent chemical propertiesfalse
- 4Both A & Btrue
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Answer : 4. "Both A & B"
Explanation :
Answer: D) Both A & B Explanation: An Element is a pure substance of one type of atom. In chemistry, any material such as carbon, hydrogen, iron, or oxygen that cannot be broken down into more fundamental substances is nothing but an element.
Q: Arjuna Award was introduced in _____ ? 1677 05b5cc6d3e4d2b4197774e53b
5b5cc6d3e4d2b4197774e53b- 11971false
- 21961true
- 31951false
- 41987false
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Answer : 2. "1961"
Explanation :
Answer: B) 1961 Explanation:
Q: What sugar is found in DNA? 1677 05b5cc6a6e4d2b4197774cd65
5b5cc6a6e4d2b4197774cd65- 1Ribosefalse
- 2Deoxyribosetrue
- 3Pentosefalse
- 4Sucrosefalse
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Answer : 2. "Deoxyribose"
Explanation :
Answer: B) Deoxyribose Explanation: DNA - Deoxyribonucleic acid is a type of nucleic acid. The sugar contained in it is called Deoxyribose.
Q: Laxmi and Prasanna set on a journey. Laxmi moves northwards at a speed of 20kmph and Prasanna moves southward at a speed of 30 kmph. How far will be Prasanna from Laxmi after 60 minutes ? 1677 05b5cc74fe4d2b4197774fae0
5b5cc74fe4d2b4197774fae0- 124 kmfalse
- 250 kmtrue
- 342 kmfalse
- 430 kmfalse
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Answer : 2. "50 km"
Explanation :
Answer: B) 50 km Explanation: We know 60 min = 1 hrTotal northward Laxmi's distance = 20kmph x 1hr = 20 kmTotal southward Prasanna's distance = 30kmph x 1hr = 30 kmTotal distance between Prasanna and Laxmi is = 20 + 30 = 50 km.