IIT JEE Practice Question and Answer
8Q: Vishal invested 10% more than Trishul. Trishul invested 10% less than Raghu. If the total sum of their investments is Rs. 5780, how much amount did Raghu invest ? 2196 05b5cc75ee4d2b4197774fc9d
5b5cc75ee4d2b4197774fc9d- 1Rs.2010false
- 2Rs.2200false
- 3Rs.2000true
- 4Rs.2100false
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Answer : 3. "Rs.2000"
Explanation :
Answer: C) Rs.2000 Explanation: Let money invested by Raghu = Rs. xMoney invested by Trishul = 9/10 x = 0.9xMoney invested by Vishal = 9/10x * 110/100 = 0.99xAlso, x+0.9x+0.99x = 5780= x= 5780/2.89 = 2000 Therefore, amount invested by Raghu is Rs. 2000.
Q: A fair six-sided die is rolled twice. What is the probability of getting 4 on the first roll and not getting 6 on the second roll ? 2195 05b5cc6d7e4d2b4197774e6c1
5b5cc6d7e4d2b4197774e6c1- 11/36false
- 25/36true
- 31/12false
- 41/9false
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Answer : 2. "5/36"
Explanation :
Answer: B) 5/36 Explanation: The two events mentioned are independent. The first roll of the die is independent of the second roll. Therefore the probabilities can be directly multiplied. P(getting first 4) = 1/6 P(no second 6) = 5/6 Therefore P(getting first 4 and no second 6) = 1/6 x 5/6 = 5/36
Q: A house owner wants to get his house painted. He is told that this would require 45 kg of paint allowing 6% wasting. And if the paint is available in 4 kg tins only, the number of tins required for painting the house is ? 2194 05b5cc6d1e4d2b4197774e3e3
5b5cc6d1e4d2b4197774e3e3- 112true
- 213false
- 311false
- 410false
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Answer : 1. "12"
Explanation :
Answer: A) 12 Explanation: Given 45 kg for painting And 6% 0f 45 for wasting => 6x45/100 = 2.7 kg Now total paint required = 45+2.7 = 47.7 kgs But tins are available in only 4kgs Then, no. of tins req = 47.7/4 = 11.4 => 12 tins
Q: Which is the smallest district of India by size ? 2193 05b5cc6d9e4d2b4197774e825
5b5cc6d9e4d2b4197774e825- 1Mahetrue
- 2Zilafalse
- 3Kaushambifalse
- 4Nonefalse
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Answer : 1. "Mahe"
Explanation :
Answer: A) Mahe Explanation: Mahe is the smallest district of India in size which is in Puducherry.
Q: Oscar Awards are conferred annually by 2193 05b5cc69fe4d2b4197774c9c3
5b5cc69fe4d2b4197774c9c3- 1Academy of Motion Pictures, arts and sciences, USAtrue
- 2Hollywood Foreign Press Associationfalse
- 3Government of United Statesfalse
- 4Nonefalse
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Answer : 1. "Academy of Motion Pictures, arts and sciences, USA"
Explanation :
Answer: A) Academy of Motion Pictures, arts and sciences, USA Explanation:
Q: The fastest growing plant is ______ ? 2193 05b5cc6cde4d2b4197774e1b3
5b5cc6cde4d2b4197774e1b3- 1Ashokafalse
- 2Banyanfalse
- 3Eucalyptustrue
- 4Rosefalse
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Answer : 3. "Eucalyptus"
Explanation :
Answer: C) Eucalyptus Explanation:
Q: DNA can be found in what Organelles? 2193 05b5cc6b5e4d2b4197774d506
5b5cc6b5e4d2b4197774d506- 1Chloroplasts and Mitichondriatrue
- 2Nucleus and Ribosomesfalse
- 3Ribosomes and Mitochondriafalse
- 4Endoplasmic Reticulum and Nucleusfalse
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Answer : 1. "Chloroplasts and Mitichondria"
Explanation :
Answer: A) Chloroplasts and Mitichondria Explanation: DNA can be found in 3 Organelles namely Nucleus, Mitochondria in animals and Chloroplasts in plants.
Q: Which type of molecules polar or nonpolar dissolves in water? 2193 05b5cc696e4d2b4197774c550
5b5cc696e4d2b4197774c550- Show AnswerHide Answer
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Answer :
Explanation :
In general, polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes.As water molecules are polar, polar molecules dissolves in water.