IIT JEE Practice Question and Answer
8Q: In general, which is the cause of a land breeze? 1778 05b5cc626e4d2b4197774b846
5b5cc626e4d2b4197774b846- 1Pressurefalse
- 2Heatfalse
- 3Temperaturetrue
- 4None of the abovefalse
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Answer : 3. "Temperature"
Explanation :
Answer: C) Temperature Explanation: The land breeze is a coastal breeze at night blowing from the land to the ocean. It is caused by the difference in the rates of cooling of the land and of the ocean. Once again, the bigger the difference in temperature between the two, the stronger the wind.
Q: 125 over 1000 in Simplest Form? 1778 05b5cc6abe4d2b4197774d034
5b5cc6abe4d2b4197774d034- 12/9false
- 21/8true
- 33/8false
- 44/7false
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Answer : 2. "1/8"
Explanation :
Answer: B) 1/8 Explanation: 125 over 1000 in Simplest Form means 1251000 in its simple fraction form. Now, to get the simplest form of 125/1000, find the HCF or GCD of both numerator and denominator i.e, 125 and 1000. HCF of 125, 1000 = 125 Then, divide both numerator and denominator by 125 i.e, 1251251000125 = 18 Hence, 18 is the simplest form of 125 over 1000.
Q: What is the meaning of the four colour dots in the news paper? 1778 05b5cc683e4d2b4197774c2a6
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Answer :
Explanation :
If you read newspaper daily, then you may be aware of the four coloured dots on the corner of the newspaper. The four dots CMYK — blue (Cyan), pink (Magenta), Yellow and black (Kalio) are registration marks used during printing to help ensure the print is aligned properly. Any colour can be obtained by adding the correct proportion of these four colours. CMYK is used as a base for the colours used in printing newspapers, and these four colours are often printed on the paper in either a heart, dot, or square shape. To print an image, the plates of all these colours are laid out on a page separately and lined up in the same spot while printing. If those four dots are blur or you find the colours overlapping on the image it means the printing is not good. To print an accurate and perfect image, the colors and shape must be arranged precisely and must be claear sharp in order to get the best output. That's why CMYK is also called registration mark. As physically checking all the pages of the paper is not possible for a printer who prints number of news papers daily, he just checks these dots.
Q: Who has been appointed as the new economic affairs secretary in the Union Finance Ministry ? 1778 05b5cc6d4e4d2b4197774e573
5b5cc6d4e4d2b4197774e573- 1N. K. Sinhafalse
- 2Tapan Rayfalse
- 3Subhash C. Gargtrue
- 4Kirti Singhfalse
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Answer : 3. "Subhash C. Garg"
Explanation :
Answer: C) Subhash C. Garg Explanation: Subhash C. Garg, a 1983 batch lAS officer of Rajasthan cadre, has been appointed as the new the economic affairs secretary in the Union Finance Ministry. The post fell vacant after Shaktikanta Das retired on May 31, 2017. Currently, Tapan Ray, the corporate affairs secretary, has the additional charge of the economic affairs department. Prior to this appointment, Garg was Executive Director at World Bank for Bangladesh, Bhutan, India and Sri Lanka.
Q: Which of the following is a characteristic of the Ascomycota? 1778 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: What goes up and down the stairs without moving? 1777 05b5cc636e4d2b4197774b9f0
5b5cc636e4d2b4197774b9f0- 1Umbrellafalse
- 2Liftfalse
- 3Stairstrue
- 4All the abovefalse
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Answer : 3. "Stairs"
Explanation :
Answer: C) Stairs Explanation: Those are stairs which goes up and down without moving.
Q: A man covered a certain distance at some speed. Had he moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. The distance (in km) is 1777 05b5cc6d9e4d2b4197774e816
5b5cc6d9e4d2b4197774e816- 130false
- 236false
- 340true
- 442false
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Answer : 3. "40"
Explanation :
Answer: C) 40 Explanation: Let distance = x km and usual rate = y kmph.Then, x/y - x/(y+3) = 40/60 --> 2y (y+3) = 9x ----- (i)Also, x/(y-2) - x/y = 40/60 --> y(y-2) = 3x -------- (ii)On dividing (i) by (ii), we get: x = 40 km.
Q: Which of the following is true about blood plasma? 1777 05b5cc622e4d2b4197774b7e4
5b5cc622e4d2b4197774b7e4- 1The main protein component is hemoglobin.false
- 2It is a faint yellow fluid.false
- 3It is the same as serum but without the clotting proteins.false
- 4It is about 90% water.true
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Answer : 4. "It is about 90% water."
Explanation :
Answer: D) It is about 90% water. Explanation: The first option is incorrect because it is devoid of blood cell, also red blood cells so doesn’t contains haemoglobin. The second option is incorrect because plasma is colorless. The third option is also incorrect because plasma contains the clotting factors.

