IIT JEE Practice Question and Answer
8Q: Tanjore kingdom was founded by Raja Odeyar. True or False ? 1067 05b5cc6cae4d2b4197774e02e
5b5cc6cae4d2b4197774e02e- 1TRUEfalse
- 2FALSEtrue
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Answer : 2. "FALSE"
Explanation :
Answer: B) FALSE Explanation: Mysore kingdom was founded by Raja Odeyar.
Q: 5 Digits Number? What 5-digit number has the following features: If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number. 1052 05b5cc6a6e4d2b4197774cd74
5b5cc6a6e4d2b4197774cd74- Show AnswerHide Answer
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Answer :
Explanation :
We can make an equation: 3(100000 + x) = 10x+1 (Why? Well, adding 100000 puts a 1 at the front of a five-digit number, and multiplying by 10 and adding 1 puts a 1 at the end of a number) Solving this gives: 10x+1 = 3(100000 + x) 10x+1 = 300000 + 3x 10x = 299999 + 3x7x = 299999x = 299999/7 = 42857 The answer is 42857 (142857 is three times smaller than 428571).
Q: Who is the author of the book "The Hungry Tide"? 1045 05b5cc6b1e4d2b4197774d313
5b5cc6b1e4d2b4197774d313- 1Mitali Meelanfalse
- 2Ravinder Singhfalse
- 3Amitav Ghoshtrue
- 4Sudha Murtyfalse
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Answer : 3. "Amitav Ghosh"
Explanation :
Answer: C) Amitav Ghosh Explanation:
Q: Which Color has the Longest Wavelength? 1041 05b5cc6ace4d2b4197774d0ac
5b5cc6ace4d2b4197774d0ac- 1Violetfalse
- 2Yellowfalse
- 3Redtrue
- 4Whitefalse
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Answer : 3. "Red"
Explanation :
Answer: C) Red Explanation: The visible colors from Longest wavelength to Shortest wavelength are :: Red, Orange, Yellow, Green, Blue and Violet. Red > Orange > Yellow > Green > Blue > Violet. 1. Infrared radiation has a longer wavelength than visible Red light. 2. Ultraviolet radiation has a shorter wavelength than the visible violet light. 3. The white light is a mixture of the colors of the visible spectrum.
Q: 1 Joule is Equal to 1041 05b5cc6b9e4d2b4197774d766
5b5cc6b9e4d2b4197774d766- 110^3 ergsfalse
- 210^6 ergsfalse
- 310^7 ergstrue
- 410^5 ergsfalse
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Answer : 3. "10^7 ergs"
Explanation :
Answer: C) 10^7 ergs Explanation: 1 Joule = 107 ergs = 0.000239 Kilo Calories. Joule is the Unit of Energy. Joule is equal to Energy transferred to an object when a force of One Newton acts on that object in the direction of its motion through a distance of one metre.(1 N-m)
Q: Which sample is a pure substance? 1041 05b5cc69ae4d2b4197774c79d
5b5cc69ae4d2b4197774c79d- 1Table saltfalse
- 2Pure waterfalse
- 3a test tube of zinc oxidefalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: A pure substance can be defined as any single type of material that has not been contaminated by another substance. In chemistry, a pure substance has a definite composition. It can be a compound or an element. A pure substance is considered to be a material that consists of one type of "building block" of matter. Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Tin, sulfur, and diamond are examples of pure substances which are chemical elements. All elements are pure substances. Water, sugar, salt and baking soda are pure substances which are chemical compounds. Chemical compounds also are pure substances
Q: In 1914 congress formed the federal trade commission to 1031 05b5cc662e4d2b4197774be94
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Answer :
Explanation :
When the FTC was created in 1914, its purpose was to monitor all business practices to prevent unfair methods of competition in commerce as part of the battle to "bust the trusts." Over the years, Congress passed additional laws giving the agency greater authority to police anticompetitive practices.
Q: Which of the following is a Composite number? 1027 05b5cc6a5e4d2b4197774ccf5
5b5cc6a5e4d2b4197774ccf5- 10false
- 219false
- 329false
- 491true
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Answer : 4. "91"
Explanation :
Answer: D) 91 Explanation: Here in the given numbers 91 is a Composite number. Since it has factors of 7 and 13 other than 1 and itself. Composite Numbers : A composite number is a positive integer which is not prime (i.e., which has factors other than 1 and itself). Examples :: 4, 6, 8, 12, 14, 15, 18, 20, ...

