IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: O and O' are the center of the two circles with radii 7cm and 9cm respectively. The distance between the centers is 20cm. If PQ be the transverse common tangent to the circles, which cuts OO' at X, what is the length of O'X in cm ? 1164 05b5cc701e4d2b4197774f1a8
5b5cc701e4d2b4197774f1a8- 110false
- 26false
- 335/4false
- 445/4true
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उत्तर : 4. "45/4"
व्याख्या :
Answer: D) 45/4 Explanation: As clear from the figure itself, triangle OQX and triangle O'PX are similar. So, OQ/O'P = OX/O'X => OX = (7/9)xO'X And since, OX + O'X = 20 => (7/9)xO'X + O'X = 20 => O'X = 45/4
प्र: What is 12 S of the Z? 1164 05b5cc6b5e4d2b4197774d515
5b5cc6b5e4d2b4197774d515- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
12 S of Z represents 12 Signs of the Zodiac. It is similar to the 1. 52 W in a Y - 52 weeks in a year 2. 3 H in a C - 3 Hands in a Clock 3. 3600 S in an H - 3600 Seconds in an Hour 4. 5 O in the W - 5 Oceans in the World
प्र: What is consumption disease in the 19th century? 1162 05b5cc6b6e4d2b4197774d5c8
5b5cc6b6e4d2b4197774d5c8- 1Tuberculosistrue
- 2Paralysisfalse
- 3Plaguefalse
- 4Cholerafalse
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उत्तर : 1. "Tuberculosis"
व्याख्या :
Answer: A) Tuberculosis Explanation: Tuberculosis (TB) was the leading cause of death in the United States and one of the most feared diseases in the world during the 19th and early 20th centuries. Formerly known as Consumption diseases because many types of lung diseases were lumped under the term 'consumption'. Lung cancer and bronchitis were examples.
प्र: The Human Resource Development Ministry and the External Affairs Ministry launched an online verification portal ___________ to make the document verification process easier. 1161 05b5cc6dbe4d2b4197774e8f0
5b5cc6dbe4d2b4197774e8f0- 1e-bharatfalse
- 2e-sanadtrue
- 3e-foriegnfalse
- 4e-verifyfalse
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उत्तर : 2. "e-sanad"
व्याख्या :
Answer: B) e-sanad Explanation: The Human Resource Development Ministry and the External Affairs Ministry launched an online verification portal to make the document verification process easier for students who planning to study abroad. The Central Board of Secondary Education’s (CBSE) academic repository of degrees and certificates “Parinam Manjusha” was also involved in the project of creating “eSanad”.
प्र: One-third of the boys and one-half of the girls of a college participated in a sport. If the number of participating students is 300, out of which 100 are boys. What is the total number of students in the college ? 1160 05b5cc6c3e4d2b4197774dc8b
5b5cc6c3e4d2b4197774dc8b- 1550false
- 2575false
- 3625false
- 4700true
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उत्तर : 4. "700"
व्याख्या :
Answer: D) 700 Explanation: Let number of boys = B Number of girls = G From the given data, 1B/3 + 1G/2 = 300 But given B/3 = 100 => B = 300 G/2 = 300 - 100 G = 200 x 2 => G = 400 Therefore, total number of students in the college = B + G = 700.
प्र: Which public sector bank has tied up with Tirumala Milk Products for providing loans to dairy farmers ? 1159 05b5cc6d5e4d2b4197774e624
5b5cc6d5e4d2b4197774e624- 1Axis Bankfalse
- 2ICICI Bankfalse
- 3State Bank Of Indiatrue
- 4HDFC Bankfalse
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उत्तर : 3. "State Bank Of India"
व्याख्या :
Answer: C) State Bank Of India Explanation: The State Bank of India (SBI) has tied-up with Tirumala Milk Products to provide loans to dairy farmers who supply milk to the latter. As per the scheme for financing dairy units, SBI offers loans for construction of shed, and purchase of milch animals, milking machine, and chaff cutter. Apart from this, the bank also provides loans to dairy societies for modernisation and creation of infrastructure such as purchase of automatic milk collection system, purchase of transport vehicles and bulk chilling unit. The Tirumala Milk Products is a South- based company, which was acquired by France-based Groupe Lactalis in 2014.
प्र: Which company is now listed to be one of the world's most valuable privately held companies ? 1158 05b5cc6cee4d2b4197774e223
5b5cc6cee4d2b4197774e223- 1Space Xtrue
- 2Tata Steelsfalse
- 3Facebookfalse
- 4Applefalse
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उत्तर : 1. "Space X"
व्याख्या :
Answer: A) Space X Explanation:
प्र: 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ? 1158 05b5cc6dfe4d2b4197774eb02
5b5cc6dfe4d2b4197774eb02- 140 daystrue
- 236 daysfalse
- 332 daysfalse
- 434 daysfalse
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उत्तर : 1. "40 days"
व्याख्या :
Answer: A) 40 days Explanation: Let 1 man's 1 day work = x and 1 woman's 1 day work = y.Then, 4x + 6y = 1/8 and 3x + 7y = 1/10Solving these two equations, we get:x = 11/400 and y = 1/40010 woman's 1 day work = (1/400 x 10) = 1/40. Hence, 10 women will complete the work in 40 days.

