IIT JEE Practice Question and Answer
8Q: Find the next number in the series 265, 269, 278, 284, ? 1759 05b5cc767e4d2b4197774fdf7
5b5cc767e4d2b4197774fdf7- 1309true
- 2319false
- 3298false
- 4415false
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Answer : 1. "309"
Explanation :
Answer: A) 309 Explanation: The pattern in the given series is +4, +9, +16, +25, ... i.e. 22,32,42,52... The next number is 284+25 = 309.
Q: Economic resources are also called 1759 05b5cc66de4d2b4197774bfb5
5b5cc66de4d2b4197774bfb5- Show AnswerHide Answer
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Answer :
Explanation :
Economic resources include land, labour, capital and entrepreneurship. Entrepreneurship is also considered an economic resource because individuals are responsible for creating businesses and moving economic resources in the business environment. These economic resources are also called as Factors of production.
Q: Light from the sun reaches us in nearly 1759 05b5cc6a2e4d2b4197774cbc2
5b5cc6a2e4d2b4197774cbc2- 15 minfalse
- 24.30 hrsfalse
- 38 mintrue
- 45.30 hrsfalse
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Answer : 3. "8 min"
Explanation :
Answer: C) 8 min Explanation: The light from the sun takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury to about 5.3 hours for Pluto.
Q: DRDO full form is 1758 05b5cc69ee4d2b4197774c97b
5b5cc69ee4d2b4197774c97b- 1Delhi Research and Development Organisationfalse
- 2Defence Research and Deploymentfalse
- 3Delhi Rail Development Organisationfalse
- 4Defence Research and Development Organisationtrue
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Answer : 4. "Defence Research and Development Organisation"
Explanation :
Answer: D) Defence Research and Development Organisation Explanation: DRDO stands for The Defence Research and Development Organisation. The Defence Research and Development Organisation (DRDO) is an agency of the Republic of India, charged with the military's research and development, headquartered in New Delhi, India.
Q: The term "simple carbohydrates" refers to 1758 05b5cc642e4d2b4197774bb77
5b5cc642e4d2b4197774bb77- 1polysaccharidesfalse
- 2monosaccharides and disaccharidestrue
- 3starch and glycogenfalse
- 4dietary fiberfalse
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Answer : 2. "monosaccharides and disaccharides"
Explanation :
Answer: B) monosaccharides and disaccharides Explanation: Simple carbohydrates are also called as Simple sugars. Monosaccharides and Disaccharides refers to simple carbohydrates.
Q: The payment per hour for a daily-wages employee is increased by 33.33 and the working time is reduced by 33.33%. What is the percentage change in the employee's income ? 1758 05b5cc73de4d2b4197774f934
5b5cc73de4d2b4197774f934- 111.11% decreasetrue
- 221.11% increasefalse
- 311.11% increasefalse
- 421.11% decreasefalse
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Answer : 1. "11.11% decrease"
Explanation :
Answer: A) 11.11% decrease Explanation: If earlier he is getting Rs. 1 per hr and working for 1 hr, income = Rs. 1Now he is getting Rs 1.3333 per hr and working for 0.66667 hrs Then income for 0.66667 hrs = Rs. 0.8889. If payment per hr is increased by 33.33 % and working hours dereased by 33.33%, then 11.11 % decrease in income.
Q: The mean of 100 observations is 40. It is found that an observation 84 was misread as 48. Then the correct mean is ? 1758 05b5cc6c0e4d2b4197774dab2
5b5cc6c0e4d2b4197774dab2- 140.36true
- 241.24false
- 341.92false
- 442.05false
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Answer : 1. "40.36"
Explanation :
Answer: A) 40.36 Explanation: Given, mean of 100 observations is 40 => Total of 100 observations = 40 x 100 = 4000 84 is misread as 48 => Difference = 84 - 48 = 36 => Now, new total of 100 observations = 4000 + 36 = 4036 Correct Mean = 4036/100 = 40.36
Q: In a daily morning walk three persons step off together. their steps measure 75 cm, 80 cm and 85 cm respectively. What is the minimum distance each should walk so that thay can cover the distance in complete steps ? 1758 05b5cc6c0e4d2b4197774dabc
5b5cc6c0e4d2b4197774dabc- 1222 m 44 cmfalse
- 2204 mtrue
- 3201 m 21 cmfalse
- 4208 mfalse
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Answer : 2. "204 m"
Explanation :
Answer: B) 204 m Explanation: To find the minimum distance, we have to get the LCM of 75, 80, 85 Now, LCM of 75, 80, 85 = 5 x 15 x 16 x 17 = 20400 Hence, the minimum distance each should walk so that thay can cover the distance in complete steps = 20400 cms = 20400/100 = 204 mts.

