IIT JEE Practice Question and Answer
8Q: Planets do not twinkle because 1946 05b5cc6a4e4d2b4197774cca5
5b5cc6a4e4d2b4197774cca5- 1Far distancefalse
- 2Total internal reflectionfalse
- 3Refractionfalse
- 4Near distancetrue
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Answer : 4. "Near distance"
Explanation :
Answer: D) Near distance Explanation: Stars twinkle because they’re so far away from Earth that when light from the stars passes through the atmosphere, it is bent countless times due to refraction, making it look like as if they were blinking. The sun and other planets doesn’t twinkle because it’s too close to Earth compared to other stars.
Q: Which must be true for metamorphism to occur? 1945 05b5cc666e4d2b4197774bf21
5b5cc666e4d2b4197774bf21- 1The parent rock must be in solid form.false
- 2Tons of pressure must be applied.false
- 3The process must take place underground.false
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: Metamorphism is the change of minerals or geologic texture in pre-existing rocks, without the protolith melting into liquid magma. The change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. The parent rock must be in solid form. Tons of pressure must be applied for metamorphism to happen. The process must take place underground.
Q: In a Certain Country 1/2 of 5 = 3. If the same proportion holds, what is the value of 1/3 of 10 ? 1945 05b5cc7a5e4d2b41977750665
5b5cc7a5e4d2b41977750665- 14true
- 26false
- 38false
- 410false
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Answer : 1. "4"
Explanation :
Answer: A) 4 Explanation: Let 1310 = x => 3x = 10 Given that 125=3 Therefore, 52x = 10 => x = 10/3 = 4.
Q: Which of the following is a non metal that remains liquid at room temperature ? 1945 05b5cc6e0e4d2b4197774eb43
5b5cc6e0e4d2b4197774eb43- 1Chlorinefalse
- 2Phosphorousfalse
- 3Brominetrue
- 4Heliumfalse
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Answer : 3. "Bromine"
Explanation :
Answer: C) Bromine Explanation:
Q: What color does yellow and green make? 1944 05b5cc69fe4d2b4197774c9d7
5b5cc69fe4d2b4197774c9d7- 1Limetrue
- 2Ocean mistfalse
- 3Maroonfalse
- 4Tangerinefalse
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Answer : 1. "Lime"
Explanation :
Answer: A) Lime Explanation: Yellow and green color mix make a Lime color. The three primary colors in additive mixing are red, green, and blue. In the absence of color or, when no colors are showing, the result is black. If all three primary colors are showing, the result is white. When red and green combine, the result is yellow. When red and blue combine, the result is magenta. When blue and green combine, the result is cyan.
Q: The shortest book in number of words? 1944 05b5cc6a4e4d2b4197774ccaa
5b5cc6a4e4d2b4197774ccaa- 1Johntrue
- 2Judefalse
- 3Obadiahfalse
- 4Philemonfalse
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Answer : 1. "John"
Explanation :
Answer: A) John Explanation:
Q: Which three amendments were passed shortly after the civil war? 1943 05b5cc66de4d2b4197774bfaf
5b5cc66de4d2b4197774bfaf- Show AnswerHide Answer
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Answer :
Explanation :
The three major amendments that were passed shortly after the Civil War are the reconstruction amendments that were the 13th, 14th, and 15th amendments. The 13th Amendment abolished slavery, The 14th granted African American citizenship and equal protection before the law, (and) The 15th Amendment attempted to secure the right to vote for newly freed slaves.
Q: Two numbers are respectively 40% and 30% more than a third number. The second number expressed in terms of percentage of the first is ? 1942 05b5cc75ce4d2b4197774fc43
5b5cc75ce4d2b4197774fc43- 192.8%true
- 284.23%false
- 387.14%false
- 494.1%false
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Answer : 1. "92.8%"
Explanation :
Answer: A) 92.8% Explanation: Here, x = 40 and y = 30;Therefore second number= [[100+y100+x] x 100 ]% of first number= [[100+y100+x] x 100 ]% of first numberSecond number = 92.8% of the first number.

