IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: 6 B in an O? 2628 05b5cc669e4d2b4197774bf59
5b5cc669e4d2b4197774bf59- 16 books in an orderfalse
- 26 balls in an overtrue
- 36 bats in an oddfalse
- 4None of the abovefalse
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उत्तर : 2. "6 balls in an over"
व्याख्या :
Answer: B) 6 balls in an over Explanation: 6 b in an o means 6 balls in an over in cricket.
प्र: I have four fingers and a thumb, but not alive. Who am I? 2627 05b5cc615e4d2b4197774b6a7
5b5cc615e4d2b4197774b6a7- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
A glove. It has 5 fingers as we have but not alive.
प्र: If a number 72k23l is divisible by 88. Then find value of k and l ? 2626 05b5cc745e4d2b4197774fa36
5b5cc745e4d2b4197774fa36- 1k=8 & l=2false
- 2k=7 & l=2true
- 3k=8 & l=3false
- 4k=7 & l=1false
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उत्तर : 2. "k=7 & l=2"
व्याख्या :
Answer: B) k=7 & l=2 Explanation: If a number to be divisile by 88, it should be divisible by both "8" and "11" Check for '8' :For a number to be divisible by "8", the last 3-digit should be divisible by "8"Here 72x23y --> last 3-digit is '23y'So y=2 [ (i.e) 232 is absolutely divisible by "8"] Chech for '11' :For a number to be divisible by "11" , sum of odd digits - sum of even digits should be divisible by "11"(7 + x + 3) - (2 + 2 + y)(7 + x + 3) - (2 + 2 + 2)(10 + x) - 6 should be divisible by "11"for x = 7=> 17 - 6 = 11 [ which is absolutely divisible by "11"] So x = 7 , y= 2.
प्र: Who invented Dynamite? 2625 05b5cc6bbe4d2b4197774d834
5b5cc6bbe4d2b4197774d834- 1Graham Bellfalse
- 2Nikola Teslafalse
- 3Alfred Nobeltrue
- 4Louis Pateurfalse
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उत्तर : 3. "Alfred Nobel"
व्याख्या :
Answer: C) Alfred Nobel Explanation: Alfred Bernhard Nobel was a Swedish chemist, engineer, inventor, businessman, and philanthropist. Known for inventing Dynamite, Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel producer to a major manufacturer of cannon and other armaments.
प्र: Dry ice is nothing but 2620 05b5cc60de4d2b4197774b62c
5b5cc60de4d2b4197774b62c- 1Solid carbon dioxidetrue
- 2Baking sodafalse
- 3Gaseous carbon dioxidefalse
- 4Carbon monoxidefalse
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उत्तर : 1. "Solid carbon dioxide"
व्याख्या :
Answer: A) Solid carbon dioxide Explanation: Dry ice is solid form of carbon dioxide, used as a cooling agent. It lower temperature than that of water ice and not leave any residue.
प्र: How many lines of symmetry does a Pentagon have? 2618 05b5cc6b2e4d2b4197774d36e
5b5cc6b2e4d2b4197774d36e- 14false
- 25true
- 36false
- 40false
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उत्तर : 2. "5"
व्याख्या :
Answer: B) 5 Explanation: A regular Pentagon have 5 sides and 5 lines of symmetry. The number of lines of symmetry in a regular polygon is equal to the number of sides.
प्र: Oxygen in our blood is transported by a protein named 2618 05b5cc696e4d2b4197774c551
5b5cc696e4d2b4197774c551- 1keratinfalse
- 2myoglobifalse
- 3collagenfalse
- 4haemoglobintrue
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उत्तर : 4. "haemoglobin"
व्याख्या :
Answer: D) haemoglobin Explanation: Oxygen in our blood is transported by a protein named Haemoglobin.
प्र: 40% of 265 + 35% of 180 = 50% of ? 2616 05b5cc75ce4d2b4197774fc57
5b5cc75ce4d2b4197774fc57- 1383false
- 2338true
- 384.5false
- 4253.5false
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उत्तर : 2. "338"
व्याख्या :
Answer: B) 338 Explanation: We know that 40% = 25 40% of 265 + 35% of 180 = 50% ? 25 x 265 + 35% of 180 = 50% ? We know that (35% of 180 = 180% of 35) & 180% = 95 25 x 265 + 95 x 35 = 50% ? 106 + 63 = 50% ? ?= 2 x 169 = 338.

