GATE प्रश्न और उत्तर का अभ्यास करें
8प्र: Which elements are most abundant in living organisms? 1582 05b5cc698e4d2b4197774c60e
5b5cc698e4d2b4197774c60e- 1oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorustrue
- 2carbon, potassium, iron, magnesium, hydrogen, and nitrogenfalse
- 3hydrogen, carbon, calcium, potassium, oxygen, and phosphorusfalse
- 4oxygen, calcium, phosphorus, sodium, hydrogen, and carbonfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus"
व्याख्या :
Answer: A) oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus Explanation: Living organisms often contain trace amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium, sulphur and phosphorus.
प्र: In general, which is the cause of a sea breeze? 1581 05b5cc636e4d2b4197774ba34
5b5cc636e4d2b4197774ba34- 1Pressurefalse
- 2Specific heattrue
- 3Heatfalse
- 4All the abovefalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 2. "Specific heat"
व्याख्या :
Answer: B) Specific heat Explanation: The usual cause of sea breeze is the difference in specific heat capacity between land and water Land heats and cools more quickly than water. What is the cause of a sea breeze? The air over the land is warmed and rises, to a greater temperature than that over the sea. This produces a convection current, with cooler air flowing in from over the sea to replace that rising from the land. At night the land cools more than the sea, so the action reverses to produce a land-breeze, blowing off the land.
प्र: A teacher multiplies 987 by a certain number and obtains 556781 as her answer. If in the answer, both 6 and 7 are wrong but the other digits are correct, then the correct answer will be 1581 05b5cc754e4d2b4197774fb8b
5b5cc754e4d2b4197774fb8b- 1553681false
- 2555181false
- 3556581false
- 4555681true
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 4. "555681"
व्याख्या :
Answer: D) 555681 Explanation: Given number is 987 = 3 x 7 x 47. So, required number must be divisible by each one of 3, 7, 47. None of the numbers in 553681 and 555181 are divisible by 3. While 556581 is not divisible by 7.Correct answer is 555681.
प्र: The cost price of 40 Magazines is the same as the selling price of 'P' articles. If the profit is 25%, then the value of 'P' is: 1580 05b5cc76ae4d2b4197774fe4f
5b5cc76ae4d2b4197774fe4f- 132true
- 240false
- 316false
- 430false
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "32"
व्याख्या :
Answer: A) 32 Explanation: Let C.P. of each Magazine be Rs. 1 C.P. of P articles = Rs. P. S.P. of P articles = Rs. 40. Profit = Rs. (40 - P) Now, Gain% = ProfitC.P×100 = 40-PP×100 Here 40-PP×100= 25 -->P = 32.
प्र: The length of a class room floor exceeds its breadth by 25 m. The area of the floor remains unchanged when the length is decreased by 10 m but the breadth is increased by 8 m. The area of the floor is 1580 05b5cc6b6e4d2b4197774d577
5b5cc6b6e4d2b4197774d577- 15100 sq.mtrue
- 24870 sq.mfalse
- 34987 sq.mfalse
- 44442 sq.mfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "5100 sq.m"
व्याख्या :
Answer: A) 5100 sq.m Explanation: Let the breadth of floor be 'b' m. Then, length of the floor is 'l = (b + 25)' Area of the rectangular floor = l x b = (b + 25) × b According to the question, (b + 15) (b + 8) = (b + 25) × b b2 + 8b + 15b + 120 = b2 + 25b 2b = 120 b = 60 m. l = b + 25 = 60 + 25 = 85 m. Area of the floor = 85 × 60 = 5100 sq.m.
प्र: In a mixture of 240 lt. water is 20% and rest is Milk. What quantity of mixture should be taken out and replaced with water so that water becomes 40%? 1579 05b5cc6bee4d2b4197774d98d
5b5cc6bee4d2b4197774d98d- 160 littrue
- 255 litfalse
- 345 litfalse
- 450 litfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "60 lit"
व्याख्या :
Answer: A) 60 lit Explanation:
प्र: Looking at a portrait of a man, Akhil said, "His mother is the wife of my father's son. Brothers and sisters I have none." At whose portrait was Akhil looking ? 1579 05b5cc771e4d2b4197774ff8f
5b5cc771e4d2b4197774ff8f- 1His unclefalse
- 2His nephewfalse
- 3His cousinfalse
- 4His sontrue
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 4. "His son"
व्याख्या :
Answer: D) His son Explanation: Since Akhil has no brother or sister, so he is his father's only son.So wife of Akhil's father's son---Akhil's wife.Thus, Akhil's wife is the man's mother or the man is Akhil's son.
प्र: Which of the following is a compound sentence? 1578 05b5cc666e4d2b4197774becb
5b5cc666e4d2b4197774becb- 1We can go see a movie, or we can get something to eat.true
- 2When you get there, please remember to call me.false
- 3Mohan bought some new shoes and wore them to a party.false
- 4None of the abovefalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "We can go see a movie, or we can get something to eat."
व्याख्या :
Answer: A) We can go see a movie, or we can get something to eat. Explanation: A compound sentence is a sentence that has at least two independent clauses joined by a comma, semicolon or conjunction. An independent clause is a clause that has a subject and verb and forms a complete thought. Here except option A) other two options dependent. Hence, A) We can go see a movie, or we can get something to eat is a compound sentence.