IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Who is known as the Second Law Officer of India? 2361 0

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    Chief justice of India
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    Law minister of India
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    Attorney general of India
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    Solicitor general of India
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उत्तर : 4. "Solicitor general of India"
व्याख्या :

Answer: D) Solicitor general of India Explanation: The Solicitor General of India is the second law officer of the country.   The Solicitor General of India is below the Attorney General for India, who is the Indian government's chief legal advisor, and its primary lawyer in the Supreme Court of India.   The Solicitor General of India is appointed for the period of 3 years. He assists the Attorney General and is himself assisted by several Additional Solicitors General of India.

प्र: If 15% of x = 20% of y, then x:y is  ___? 2360 0

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    4:3
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    5:4
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  • 3
    4:5
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    3:4
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उत्तर : 1. "4:3"
व्याख्या :

Answer: A) 4:3 Explanation: Given 15% of x = 20% of y => 15x = 20y => x/y = 20/15 => x : y = 4 : 3

प्र: How many numbers up to 300 and 700 are divisible by 2, 3 and 7 both together ? 2359 0

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    7
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    9
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    11
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    5
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उत्तर : 2. "9"
व्याख्या :

Answer: B) 9 Explanation: LCM of 2, 3, 7 is 42. => (700 – 300)/42 = 9  22/42 => 9 Numbers.

प्र: The modulus of elasticity for mild steel is approximately equal to 2359 0

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    210 kN/mm2
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    100 kN/mm2
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    80 kN/mm2
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  • 4
    10 kN/mm2
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उत्तर : 1. "210 kN/mm2"
व्याख्या :

Answer: A) 210 kN/mm2 Explanation: It is useful to have a property of a material that is independent of the size of the sample and can be use to compare its elastic properties with another - this is called the Modulus of Elasticity for the material. The modulus of elasticity is defined as:   Modulus of elasticity = Stress / Strain   There are three types of moduli. They are : (a) the Young Modulus - tensile and compression longitudinal stress (b) the shear modulus - a shearing stress (c) the bulk modulus - volume changes of the specimen.

प्र: A remedy for all diseases 2358 0

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    Antiseptic
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    Lyric
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    Narcotics
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    Panacea
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उत्तर : 4. "Panacea"
व्याख्या :

Answer: D) Panacea Explanation: Panacea, also known as panchrest, is a medicine supposed remedy that is claimed to cure all diseases and prolong life indefinitely. It is named after the Greek goddess of universal remedy Panakeia.

प्र: A train covers a distance between station A and station B in 45 min.If the speed of the train is reduced by 5 km/hr,then the same distance is covered in 48 min.what is the distance between the stations A and B ? 2356 0

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    80 kms
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    60 kms
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    45 kms
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    32 kms
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उत्तर : 2. "60 kms"
व्याख्या :

Answer: B) 60 kms Explanation: Let 'd' be the distance and 's' be the speed and 't' be the timed=sxt45 mins = 3/4 hr and 48 mins = 4/5 hrAs distance is same in both cases;s(3/4) = (s-5)(4/5)3s/4 = (4s-20)/515s = 16s-80s = 80 km.=> d = 80 x 3/4 = 60 kms.

प्र: Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats ? 2355 0

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    1 : 2 : 3
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    2 : 3 : 4
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    3: 4 : 5
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    4 : 5 : 6
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उत्तर : 2. "2 : 3 : 4"
व्याख्या :

Answer: B) 2 : 3 : 4 Explanation: Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. Seats for Mathematics, Physics and Biology in a school are 5x, 7x and 8x. There is a proposal to increase these seats by 40%, 50% and 75% respectively. Then Seats for Mathematics, Physics and Biology in a school will be 1.4 X 5x, 1.5 X 7x and 1.75 X 8x and ratio will be 7 : 10.5 : 14  => 2:3:4.

प्र: A man saves 20% of his monthly salary. If an account of dearness of things he is to increase his monthly expenses by 15%, he is only able to save Rs. 400 per month. What is his monthly salary ? 2355 0

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    Rs. 6000
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    Rs. 4500
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    Rs. 5000
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    Rs. 6500
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उत्तर : 3. "Rs. 5000"
व्याख्या :

Answer: C) Rs. 5000 Explanation: Income = Rs. 100 Expenditure = Rs. 80 Savings = Rs. 20 Present Expenditure 80x(15/100) = Rs. 12 = 80 + 12 = Rs. 92 Present Savings = 100 – 92 = Rs. 8 100 ------ 8? --------- 400 => 5000 His salary = Rs. 5000

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