IIT JEE Practice Question and Answer
8Q: What sugar is found in DNA? 1677 05b5cc6a6e4d2b4197774cd65
5b5cc6a6e4d2b4197774cd65- 1Ribosefalse
- 2Deoxyribosetrue
- 3Pentosefalse
- 4Sucrosefalse
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Answer : 2. "Deoxyribose"
Explanation :
Answer: B) Deoxyribose Explanation: DNA - Deoxyribonucleic acid is a type of nucleic acid. The sugar contained in it is called Deoxyribose.
Q: If 4 circles of equal radius are drawn with vertices of a square as the centre , the side of the square being 7 cm, find the area of the circles outside the square ? 1677 05b5cc718e4d2b4197774f490
5b5cc718e4d2b4197774f490- 1119.21 sq cmfalse
- 2115.395 sq cmtrue
- 3104.214 sq cmfalse
- 4111.241 sq cmfalse
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Answer : 2. "115.395 sq cm"
Explanation :
Answer: B) 115.395 sq cm Explanation: Because each vertice of the square is the center of a circle(1/4) part of the total area of each circle inside of the square.(3/4) part of the total area of each circle outside of the square.Thus total area outside the square is 434×227×3.5×3.5 = 115.3955 sq cm.
Q: Laxmi and Prasanna set on a journey. Laxmi moves northwards at a speed of 20kmph and Prasanna moves southward at a speed of 30 kmph. How far will be Prasanna from Laxmi after 60 minutes ? 1677 05b5cc74fe4d2b4197774fae0
5b5cc74fe4d2b4197774fae0- 124 kmfalse
- 250 kmtrue
- 342 kmfalse
- 430 kmfalse
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Answer : 2. "50 km"
Explanation :
Answer: B) 50 km Explanation: We know 60 min = 1 hrTotal northward Laxmi's distance = 20kmph x 1hr = 20 kmTotal southward Prasanna's distance = 30kmph x 1hr = 30 kmTotal distance between Prasanna and Laxmi is = 20 + 30 = 50 km.
Q: Todar Mal was associated with 1676 05b5cc6a4e4d2b4197774cc46
5b5cc6a4e4d2b4197774cc46- 1Land revenue reformstrue
- 2Music and Literaturefalse
- 3Law and Musicfalse
- 4Law and Literaturefalse
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Answer : 1. "Land revenue reforms"
Explanation :
Answer: A) Land revenue reforms Explanation: Todar Mal was associated with land revenue reforms. Raja Todar Mal was the Finance Minister of the Mughal empire during Akbar's reign. He was one of the Navaratnas in Akbar's durbar.
Q: Let K and L be events on the same sample space, with P (K) = 0.8 and P (B) = 0.6. Are these two events are disjoint ? 1676 05b5cc6d7e4d2b4197774e6c6
5b5cc6d7e4d2b4197774e6c6- 1B) = 0.6. Are these two events are disjoint ? A)false
- 2= 0.6. Are these two events are disjoint ? A) TRUE B) FALSE Answer & Explanation Answer: B) FALSE Explanation: These two events cannot be disjoint because P(K) + P(L) > 1. P(AꓴB) = P(true
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Answer : 2. "= 0.6. Are these two events are disjoint ?
A) TRUE
B) FALSE
Answer & Explanation
Answer: B) FALSE
Explanation: These two events cannot be disjoint because P(K) + P(L) > 1.
P(AꓴB) = P("
Explanation :
Answer: B) FALSE Explanation: These two events cannot be disjoint because P(K) + P(L) > 1. P(AꓴB) = P(A) + P(B) - P(AꓵB). An event is disjoint if P(A ꓵ B) = 0. If K and L are disjoint P(K ꓴ L) = 0.8 + 0.6 = 1.4 And Since probability cannot be greater than 1, these two mentioned events cannot be disjoint.
Q: When Was The Tripitaka Written 1676 05b5cc6b9e4d2b4197774d77a
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Answer :
Explanation :
The Tripitaka was Written in Third Century bce(beginning of the common era). The Tripitaka (called Tipitaka in Pali) is the earliest collection of buddhist writings. Initially, they were composed orally.
Q: Which organelle is the control center of a cell? 1675 05b5cc69fe4d2b4197774ca0f
5b5cc69fe4d2b4197774ca0f- 1Nucleustrue
- 2Cytoplasmfalse
- 3Cell membranefalse
- 4endoplasmic reticulumfalse
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Answer : 1. "Nucleus"
Explanation :
Answer: A) Nucleus Explanation: Nucleus serves as the control center for cell metabolism and reproduction.
Q: The most populous city in the world is ? 1675 05b5cc6e0e4d2b4197774eb3e
5b5cc6e0e4d2b4197774eb3e- 1Tokyotrue
- 2Parisfalse
- 3Pekingfalse
- 4Londonfalse
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Answer : 1. "Tokyo"
Explanation :
Answer: A) Tokyo Explanation: