Online Exam Booster 2020 By Study Point
Read INSTRUCTIONS carefully-
INSTRUCTIONS-
1. The First step is sign up with Your name , Email. And Your Form Mobile no.
2. While signing up, Your Quiz will be start.
3. The quiz will be half an hour duration.
4. You can attempt the quiz only one. Time.
5. There are a total 50 questions.
6. Each question carries one mark. No negative marking for wrong answers.
7. All questions are of Multiple Choice.
8. All Questions are in both language English & Hindi.
9. If Any Confusing situation English language is accepted.
निर्देश-
1. पहले चरण में अपने Read moreनाम ,ईमेल और फॉर्म पर अंकित मोबाइल नं के साथ साइन अप करना है।
2. साइन अप करने के बाद, आपका क्विज़ शुरू हो जाएगा।
3. क्विज़ आधे घंटे की अवधि का होगा।
4. आप केवल एक बार प्रश्नोत्तरी का प्रयास कर सकते हैं।
5. इस क्विज में कुल 50 प्रश्न हैं।
6. प्रत्येक प्रश्न एक अंक का है। गलत उत्तरों के लिए कोई नकारात्मक अंक नहीं।
7. सभी प्रश्न बहुविकल्पीय हैं।
8. सभी प्रश्न हिन्दी एवं अंग्रेजी दोनो भाषा में हैं।
9. किसी भी भ्रामक स्थिति में अंग्रेजी भाषा स्वीकार की जायेगी ।
Questions and Answers
- 1.
Who among the following emperors was famous as Qalandar? इन बादशाहों में से 'कलंदर' के नाम से विख्यात था?
- A.
Humayun हुमायूं
- B.
Akbar अकबर
- C.
Babar बाबर
- D.
Shah Jahan शाहजहाँ
Correct Answer
C. Babar बाबरExplanation
The emperor who was famous as Qalandar was Babar.Rate this question:
-
- 2.
Which of the following states recorded decrease in its population in 2011 Census? 2011 की जनगणना में निम्नलिखित में से किस राज्य ने अपनी जनसंख्या में कमी दर्ज की?
- A.
Bihar बिहार
- B.
Uttar Pradesh उत्तर प्रदेश
- C.
Manipur मणिपुर
- D.
Manipur मणिपुर
Correct Answer
D. Manipur मणिपुरExplanation
The correct answer is Manipur. Manipur recorded a decrease in its population in the 2011 Census.Rate this question:
-
- 3.
Which pigment is responsible for red colour of tomato ? टमाटर के लाल रंग के लिए कौन सा वर्णक जिम्मेदार है?
- A.
Cyanide साइनाइड
- B.
Xanthophyll जैन्थोफिल
- C.
Anthocyanin एंथोसायनिन
- D.
Lycopene लाइकोपीन
Correct Answer
D. Lycopene लाइकोपीनExplanation
Lycopene is the pigment responsible for the red color of tomatoes. It is a type of carotenoid pigment that is found in high concentrations in ripe tomatoes. Lycopene is a powerful antioxidant and is also believed to have various health benefits. Its presence in tomatoes gives them their characteristic red color.Rate this question:
-
- 4.
Where is the Central AGMARK Laboratory situated ? "केंद्रीय एगमार्क प्रयोगशाला" कहाँ स्थित है?
- A.
Pune पुणे
- B.
Bengaluru बेंगलुरु
- C.
Nagpur नागपुर
- D.
Lucknow लखनऊ
Correct Answer
C. Nagpur नागपुरExplanation
The Central AGMARK Laboratory is situated in Nagpur.Rate this question:
-
- 5.
Hormone released from thyroid is थायराइड से निकला हार्मोन है
- A.
Thyroxine थाइरॉक्सिन
- B.
Insulin इंसुलिन
- C.
Parathykalin पाराथाइकलिन
- D.
None of the above इनमे से कोई भी नहीं
Correct Answer
A. Thyroxine थाइरॉक्सिनExplanation
Thyroxine is the hormone released from the thyroid gland. It plays a crucial role in regulating metabolism, growth, and development in the body. It helps in controlling the rate at which the body uses energy and affects various organs and tissues. Insulin is produced by the pancreas and is responsible for regulating blood sugar levels. Parathykalin, also known as parathyroid hormone, is released from the parathyroid glands and helps in regulating calcium levels in the body. Therefore, the correct answer is Thyroxine.Rate this question:
-
- 6.
Method involved in Dhokla preparation is प्रयुक्त ढोकला बनाने में प्रयुक्त विधि है
- A.
Shallow frying उथली चिकनाई विधि
- B.
Deep-frying गहरी चिकनाई विधि
- C.
Fermentation खमीरीकरण
- D.
Boiling उबलना
Correct Answer
C. Fermentation खमीरीकरणExplanation
The method involved in Dhokla preparation is fermentation. Fermentation is the process of breaking down complex substances into simpler ones using microorganisms like yeast or bacteria. In the case of Dhokla, a fermented batter made from rice and chickpea flour is steamed to create a fluffy and spongy texture. This process of fermentation helps in the formation of carbon dioxide gas, which gives Dhokla its characteristic light and airy texture.Rate this question:
-
- 7.
Two year to six years of age is called दो साल से छह साल की उम्र को कहा जाता है
- A.
Childhood बाल्यावस्था
- B.
Adolescence किशोरावस्था
- C.
Babyhood शैशवावस्था
- D.
Adulthood प्रौढावस्था
Correct Answer
A. Childhood बाल्यावस्थाExplanation
The given question asks for the term used for the age range of two years to six years. The correct term for this age range is "childhood" or "बाल्यावस्था" in Hindi. This is the period when children are no longer infants but are not yet adolescents. It is a time of rapid growth and development, both physically and mentally.Rate this question:
-
- 8.
Banana is propagated केला का कायिक प्रवर्धन होता है
- A.
By stem तने द्वारा
- B.
By leaf पत्ती द्वारा
- C.
By seed बीज द्वारा
- D.
By suckers सकर द्वारा
Correct Answer
A. By stem तने द्वाराExplanation
Banana is propagated by stem because it is a rhizomatous plant, meaning it has underground stems called rhizomes. These rhizomes produce suckers, which are small shoots that grow from the base of the plant. These suckers can be separated from the main plant and replanted to propagate new banana plants. Therefore, the correct answer is "by stem".Rate this question:
-
- 9.
In fruit juice sugar concentration is measured by फलों के रस में शर्करा सांद्रता द्वारा मापा जाता है
- A.
Potometer पोटोमीटर द्वारा
- B.
Refractometer रिफ्रैक्टोमीटर द्वारा
- C.
Chinometer चीनोमीटर द्वारा
- D.
Tendrometer टेन्ड्रोमीटर द्वारा
Correct Answer
B. Refractometer रिफ्रैक्टोमीटर द्वाराExplanation
A refractometer is a device used to measure the refractive index of a substance, which can be used to determine the sugar concentration in fruit juice. The refractive index is influenced by the concentration of dissolved solids, such as sugar, in a liquid. Therefore, by measuring the refractive index of the fruit juice using a refractometer, one can indirectly determine the sugar concentration.Rate this question:
-
- 10.
Which of the following is not an abiotic component of biosphere? निम्नलिखित में से कौन जैवमंडल का एक अजैव घटक नहीं है?
- A.
Protein प्रोटीन
- B.
Soil मिट्टी
- C.
Fungi कवक
- D.
Phosphorus फास्फोरस
Correct Answer
C. Fungi कवकExplanation
Fungi is not an abiotic component of the biosphere because it is a living organism. Abiotic components refer to non-living factors such as soil, water, air, and minerals. Fungi, on the other hand, are living organisms that play a vital role in the ecosystem as decomposers and symbiotic partners with plants. Therefore, fungi cannot be considered as an abiotic component of the biosphere.Rate this question:
-
- 11.
'Gir Lion Project' is situated in 'गिर शेर परियोजना' स्थित है
- A.
Gujarat गुजरात
- B.
Maharashtra महाराष्ट्र
- C.
Uttar Pradesh उत्तर प्रदेश
- D.
Madhya Pradesh मध्य प्रदेश
Correct Answer
A. Gujarat गुजरातExplanation
The Gir Lion Project is situated in Gujarat.Rate this question:
-
- 12.
The number of permanent members of the UN Security Council is संयुक्त राष्ट्र सुरक्षा परिषद के स्थायी सदस्यों की संख्या है
- A.
3
- B.
4
- C.
5
- D.
6
Correct Answer
C. 5Explanation
The correct answer is 5. The UN Security Council has 5 permanent members, which are China, France, Russia, the United Kingdom, and the United States. These countries were the victors of World War II and were given permanent seats on the Security Council to ensure their involvement in maintaining international peace and security.Rate this question:
-
- 13.
Sariska National Park is situated in सरिस्का राष्ट्रीय उद्यान स्थित है
- A.
West bengal पश्चिम बंगाल
- B.
Gujarat गुजरात
- C.
Rajasthan राजस्थान
- D.
Assam असम
Correct Answer
C. Rajasthan राजस्थानExplanation
Sariska National Park is situated in Rajasthan.Rate this question:
-
- 14.
The process of curd production from milk is known as दूध से दही उत्पादन की प्रक्रिया के रूप में जाना जाता है
- A.
Photosynthesis प्रकाश संश्लेषण
- B.
Distilation आसवन
- C.
Fermentation किण्वन
- D.
Sterilization बंध्याकरण
Correct Answer
C. Fermentation किण्वन -
- 15.
'Project tiger ' was started in India in 'प्रोजेक्ट टाइगर' भारत में शुरू किया गया था
- A.
1972
- B.
1973
- C.
1981
- D.
1988
Correct Answer
B. 1973 -
- 16.
The main atomospheric layer near the surface of the earth is पृथ्वी की सतह के पास की मुख्य वायुमंडलीय परत है
- A.
Stratosphere समताप मंडल
- B.
Troposphere क्षोभ मंडल
- C.
Mesosphere मध्यमण्डल
- D.
Ionosphere आयनमंडल
Correct Answer
B. Troposphere क्षोभ मंडलExplanation
The given question asks for the main atmospheric layer near the surface of the earth. The correct answer, troposphere, is the layer closest to the earth's surface and extends up to about 10-15 kilometers. This layer is where weather phenomena occur and where most of the earth's air mass is located. The other options, such as stratosphere, mesosphere, and ionosphere, are higher atmospheric layers that are located above the troposphere.Rate this question:
-
- 17.
4/7 of a pole is in the mud. When 1/3 of it is pulled out, an 8 meters long piece of the pole still remains in the mud. What is the total length of the pole? पोल भाग का 4/7 भाग कीचड़ में है। जब 1/3 भाग बाहर निकाला जाता है, तो पोल का 8 मीटर लंबा टुकड़ा अभी भी कीचड़ में रहता है। पोल की कुल लंबाई कितनी है?
- A.
21 meters
- B.
25 meters
- C.
30 meters
- D.
C
Correct Answer
A. 21 metersExplanation
When 1/3 of the pole is pulled out, an 8-meter piece remains in the mud. This means that the length of the pole that was pulled out is 8 meters. Since 1/3 of the pole is 8 meters, the total length of the pole can be found by multiplying 8 meters by 3. Therefore, the total length of the pole is 24 meters. However, the question asks for the total length of the pole, not the length pulled out. Since 4/7 of the pole is in the mud, the remaining 3/7 of the pole is above the mud. We can set up a proportion to find the total length of the pole: 3/7 = 24/x. Solving for x, we find that the total length of the pole is 21 meters.Rate this question:
-
- 18.
A and B can do a piece of work in 12 days , B and C in 15 days , C and A in 20 days. How long would A take separately to do the same work ? A और B किसी कार्य को 12 दिनों में, B और C उसी कार्य को 15 दिनों में, C और A उसी कार्य को 20 दिनों में कर सकते हैं। A अकेले उसी काम कितने दिनमें पूरा करेगा ?
- A.
10 days
- B.
20 days
- C.
30 days
- D.
40 days
Correct Answer
C. 30 daysExplanation
Let's assume that A, B, and C's individual work rates are represented by a, b, and c respectively.
From the given information, we can create the following equations:
1/a + 1/b = 1/12
1/b + 1/c = 1/15
1/c + 1/a = 1/20
By solving these equations, we can find that a = 1/30, b = 1/20, and c = 1/60.
Since we want to find how long A would take separately to do the work, we need to find the value of a. Therefore, A would take 30 days to complete the work on their own.Rate this question:
-
- 19.
A two digit number is such that the product of its digits is 6. If 9 is added to the number , the digits are reversed .The number is एक दो अंकों की संख्या ऐसी है कि उसके अंकों का गुणनफल 6 है। उस संख्या में 9 जोडने से प्राप्त संख्या में अंकों के स्थान बदल जाते है। वह संख्या है?
- A.
16
- B.
35
- C.
43
- D.
23
Correct Answer
D. 23Explanation
The two-digit number must have a product of digits equal to 6. The only two-digit numbers that satisfy this condition are 2 and 3. Adding 9 to each of these numbers, we get 11 and 12. However, only 23 has its digits reversed when 9 is added to it. Therefore, the correct answer is 23.Rate this question:
-
- 20.
Find the sum of all the interior bangles of a pentagon एक पंचकोण के सभी आंतरिक कोणों का योग ज्ञात कीजिए
- A.
450o
- B.
180o
- C.
360o
- D.
540o
Correct Answer
D. 540oExplanation
The sum of all the interior angles of a pentagon is always equal to 540 degrees. This is a well-known property of polygons, where the sum of the interior angles of any polygon with n sides is given by (n-2) * 180 degrees. In the case of a pentagon, which has 5 sides, the sum would be (5-2) * 180 = 540 degrees. Therefore, the correct answer is 540o.Rate this question:
-
- 21.
Every digit of a natural number is either 3 or 4 .The number is divisible by both 3 and 4. What is the smallest such number? एक प्राकृतिक संख्या का प्रत्येक अंक या तो 3 या 4 है। संख्या 3 और 4 दोनों से विभाज्य है। ऐसी संख्या सबसे छोटी क्या है?
- A.
333
- B.
444
- C.
44
- D.
4444
Correct Answer
B. 444Explanation
The smallest number that is divisible by both 3 and 4 and consists only of the digits 3 and 4 is 444. This is because the sum of the digits of 444 is 4+4+4=12, which is divisible by 3, and 444 is also divisible by 4 since the last two digits, 44, are divisible by 4. Therefore, 444 is the smallest number that satisfies the given conditions.Rate this question:
-
- 22.
Ginger is the modification of अदरक का रूपांतरण है
- A.
Root जड़
- B.
Stem तना
- C.
Leaf पत्ती
- D.
Fruit फल
Correct Answer
B. Stem तनाExplanation
Ginger is a plant that grows underground, and the stem of the ginger plant is the part that is commonly used and consumed. The stem of the ginger plant is what is harvested and used in cooking and for medicinal purposes. Therefore, the correct answer is "stem" as it is the part of the ginger plant that undergoes modification.Rate this question:
-
- 23.
Plant which reproduces by means of spores instead of seeds of पौधा जो बीजों के बजाय बीजाणुओं के माध्यम से प्रजनन करता है
- A.
Coriander धनिया
- B.
Fern फ़र्न
- C.
Mustard सरसों
- D.
Petunia पेटुनिया
Correct Answer
B. Fern फ़र्नExplanation
Ferns reproduce by means of spores instead of seeds. Spores are small reproductive structures that are released by ferns and can grow into new fern plants under favorable conditions. This method of reproduction is different from plants like coriander, mustard, and petunia, which reproduce through seeds. Therefore, the correct answer is fern.Rate this question:
-
- 24.
The coding segment of DNA is called DNA के कोडिंग सेगमेंट को कहा जाता है
- A.
Muton म्यूटॉन
- B.
Intron इन्ट्रॉन
- C.
Codon कोडोन
- D.
Exon एक्सॉन
Correct Answer
C. Codon कोडोनExplanation
The coding segment of DNA is called a codon. A codon is a sequence of three nucleotides that specifies a particular amino acid or serves as a start or stop signal for protein synthesis. It is the basic unit of the genetic code and plays a crucial role in translating the information stored in DNA into proteins.Rate this question:
-
- 25.
Which physical unit is obtained by the ratio of momentum and velocity of matter ? पदार्थ की गति और वेग के अनुपात से किस भौतिक इकाई को प्राप्त किया जाता है?
- A.
Acceleration त्वरण
- B.
Mass द्रव्यमान
- C.
Velocity वेग
- D.
Force बल
Correct Answer
B. Mass द्रव्यमानExplanation
The physical unit obtained by the ratio of momentum and velocity of matter is mass. This is because momentum is defined as the product of mass and velocity, and velocity is the rate of change of displacement. Therefore, when momentum is divided by velocity, the resulting unit is mass.Rate this question:
-
- 26.
Who carries out notification for the electionthe Lok Sabha? लोकसभा के चुनाव की सूचना कौन देता है?
- A.
Home ministry गृह मंत्रालय
- B.
Election commission of India भारत चुनाव आयोग
- C.
The President राष्ट्रपति
- D.
Lok Sabha Secretariat लोकसभा सचिवालय
Correct Answer
B. Election commission of India भारत चुनाव आयोगExplanation
The correct answer is the Election Commission of India. The Election Commission of India is responsible for conducting free and fair elections in the country, including the Lok Sabha elections. They are responsible for notifying the dates of the election, issuing guidelines and instructions to political parties and candidates, and overseeing the entire electoral process to ensure its transparency and fairness. The Home Ministry, President, and Lok Sabha Secretariat do not have the authority to carry out the notification for the Lok Sabha elections.Rate this question:
-
- 27.
The First hour of business of the Lok Sabha is known as लोकसभा की कार्यवाही के प्रथम घंटे को कहा जाता है
- A.
Zero Hour शून्य काल
- B.
Public hour सार्वजनिक काल
- C.
Privileges hour विशेषाधिकार काल
- D.
Question hour प्रश्नकाल
Correct Answer
D. Question hour प्रश्नकालExplanation
The first hour of business of the Lok Sabha is known as the Question hour. During this time, Members of Parliament can ask questions to ministers and hold them accountable for their actions and policies. It is an important part of the parliamentary proceedings as it allows for transparency and scrutiny of the government's functioning.Rate this question:
-
- 28.
Maximum ozone depletion has been observed in which of the following ? अधिकतम ओजोन रिक्तीकरण निम्नलिखित में से किसमें देखा गया है?
- A.
The Equator भूमध्यरेखा
- B.
The North pole उत्तरी ध्रुव
- C.
The South pole दक्षिण ध्रुव
- D.
None of the above
Correct Answer
A. The Equator भूमध्यरेखाExplanation
The ozone layer is thickest at the Equator due to the presence of strong sunlight and high temperatures in that region. These conditions promote the formation of ozone molecules, leading to a higher concentration of ozone in the atmosphere. In contrast, the ozone layer is thinner at the poles due to colder temperatures and weaker sunlight, which hinders the formation of ozone molecules. Therefore, the maximum ozone depletion is observed at the Equator.Rate this question:
-
- 29.
40 Persons consume 200 Kg of rice in 30 days. In how many days will 30 persons consume 500 Kg of rice ? 40 व्यक्ति 30 दिनों में 200 किलोग्राम चावल का उपभोग करते हैं। 30 व्यक्ति कितने दिनों में 500 किलोग्राम चावल का उपभोग करेंगे?
- A.
90
- B.
120
- C.
80
- D.
100
Correct Answer
D. 100Explanation
In the given scenario, we know that 40 persons consume 200 kg of rice in 30 days. This means that each person consumes 200/40 = 5 kg of rice in 30 days. Now, we need to find out how many days will 30 persons consume 500 kg of rice. Since each person consumes 5 kg of rice in 30 days, 30 persons will consume 30 * 5 = 150 kg of rice in 30 days. To find out how many days it will take for them to consume 500 kg of rice, we can set up a proportion: 150 kg / 30 days = 500 kg / x days. Solving this proportion, we get x = 100 days.Rate this question:
-
- 30.
A sum of money at simple interest doubles in 10 years .In how many years at the same rate it will be tripled? साधारण ब्याज पर धनराशि 10 वर्षों में दोगुनी हो जाती है। कितने वर्षों में एक ही दर पर इसे तीन गुना किया जाएगा?
- A.
20 years
- B.
30 years
- C.
15 years
- D.
25 years
Correct Answer
C. 15 yearsExplanation
If a sum of money doubles in 10 years at a simple interest rate, it means that the interest earned each year is equal to 10% of the principal amount. To triple the principal amount, the interest earned each year needs to be equal to 20% of the principal amount. Since the interest rate remains the same, it will take 15 years for the sum of money to be tripled.Rate this question:
-
- 31.
In a circular park of diameter 80 m, there is a square-shaped playground of maximum area. The area of the playground is 80 मीटर व्यास के एक वृत्ताकार पार्क के अन्दर अधिकतम क्षेत्रफल का एक वर्गाकार खेलका मैदान बना है । खेल के मैदान का क्षेत्रफल हैं
- A.
3200m2
- B.
6400m2
- C.
1600m2
- D.
12800m2
Correct Answer
A. 3200m2Explanation
The maximum area of a square that can fit inside a circle is when the diagonal of the square is equal to the diameter of the circle. In this case, the diameter of the circle is 80 m, so the diagonal of the square is also 80 m. Using the formula for the area of a square (Area = side^2), we can find the side length of the square by dividing the diagonal by the square root of 2. So, the side length of the square is 80 / √2 = 56.57 m. The area of the square is then calculated by squaring the side length, which is approximately 3200 m^2.Rate this question:
-
- 32.
Which of the following words is an abstract noun?
- A.
Woman
- B.
Connection
- C.
Boy
- D.
Plough
Correct Answer
D. Plough -
- 33.
Which kind of noun is 'adversity'?
- A.
Abstract noun
- B.
Common noun
- C.
Proper noun
- D.
Collective noun
Correct Answer
A. Abstract nounExplanation
Adversity is an abstract noun because it refers to a concept or idea rather than a specific person, place, or thing. It represents a state or condition of difficulty, hardship, or misfortune. Abstract nouns cannot be perceived by the five senses and are intangible. In this case, adversity cannot be seen, heard, touched, tasted, or smelled, but it is a concept that exists and can be experienced.Rate this question:
-
- 34.
Which of the following is a Nodal Institution for implementation Sustainable Development Goals in India? निम्नलिखित में से कौन सा भारत में सतत विकास लक्ष्यों को लागू करने के लिए एक नोडल संस्थान है?
- A.
Planning Commission योजना आयोग
- B.
Disinvestment Commission विनिवेश आयोग
- C.
NITI Aayog नीति नीति
- D.
Finance Commission वित्त नीति
Correct Answer
C. NITI Aayog नीति नीतिExplanation
NITI Aayog is a nodal institution for the implementation of Sustainable Development Goals in India. It is a policy think tank of the Government of India that coordinates and monitors the progress of the SDGs in the country. NITI Aayog provides guidance and support to various ministries and departments in aligning their policies and programs with the SDGs. It also undertakes research and analysis to identify key areas for intervention and formulates strategies for achieving the SDGs in India.Rate this question:
-
- 35.
United Nations Climate Action Summit 2019 was Held at which of the following cities? संयुक्त राष्ट्र जलवायु कार्रवाई शिखर सम्मेलन 2019 निम्न में से किस शहर में आयोजित किया गया था?
- A.
Paris
- B.
Geneva
- C.
Doha
- D.
New York
Correct Answer
D. New YorkExplanation
The United Nations Climate Action Summit 2019 was held in New York.Rate this question:
-
- 36.
The Money bill is defined in which Article of the constitution of India? मनी बिल को भारत के संविधान के किस अनुच्छेद में परिभाषित किया गया है?
- A.
Article 109
- B.
Article110
- C.
Article111
- D.
Article 112
Correct Answer
B. Article110Explanation
Article 110 of the Constitution of India defines the Money bill. This article specifies the characteristics and procedures related to the introduction, passage, and enactment of a Money bill in the Indian Parliament.Rate this question:
-
- 37.
If each edge of a cube is doubled , then the percentage increase in its total surface area is यदि किसी क्यूब के प्रत्येक किनारे को दोगुना किया जाता है, तो उसके कुल सतह क्षेत्र में प्रतिशत वृद्धि होती है
- A.
200%
- B.
300%
- C.
150%
- D.
600%
Correct Answer
D. 600%Explanation
When each edge of a cube is doubled, the length of each edge becomes 2 times the original length. The surface area of a cube is given by 6 times the square of the length of each edge. Therefore, if each edge is doubled, the new surface area will be 6 times the square of 2 times the original length. Simplifying this expression, we get 24 times the original surface area. To find the percentage increase, we divide the increase (24 times the original surface area) by the original surface area and multiply by 100. Hence, the percentage increase is 2400%, which is equivalent to 600%.Rate this question:
-
- 38.
A can do a work in 6 days , B takes 8 days to complete it. C takes as long as A and B would take working together. How long will it take B and C to complete the work together? A किसी कार्य को 6 दिनों में कर सकता है, B को इसे पूरा करने में 8 दिन लगते हैं। C को तब तक लगता है जब तक A और B एक साथ काम करते हैं। B और C को एक साथ काम पूरा करने में कितना समय लगेगा?
- A.
3/2 days
- B.
4 days
- C.
5days
- D.
12/5 days
Correct Answer
B. 4 daysExplanation
A can complete the work in 6 days, B takes 8 days, and C takes the same time as A and B working together. This means that A and B together can complete the work in 6 days. Since B and C are working together, their combined efficiency is the sum of their individual efficiencies. Therefore, B and C together can complete the work in less time than B alone. The correct answer is 4 days.Rate this question:
-
- 39.
In an examination, the mean of marks scored by the class of 30 students was calculated as 58.5 . Later on, it was dectected that the marks of student was worngly copied as 57 instead of 75 . Find the correct mean एक परीक्षा में, 30 छात्रों की कक्षा द्वारा बनाए गए अंकों के औसत की गणना 58.5 के रूप में की गई थी। बाद में, यह पता चला कि एक छात्र के अंक को 75 के बजाय 57 अंकित हो गया था। सही माध्य ज्ञात कीजिए
- A.
51.9
- B.
59.1
- C.
20.9
- D.
28.9
Correct Answer
B. 59.1Explanation
The correct mean can be found by subtracting the wrongly copied mark (57) from the calculated mean (58.5) and adding the correct mark (75). This will give us the total sum of marks. Then, we divide the total sum by the number of students (30) to find the correct mean. In this case, the correct mean is 59.1.Rate this question:
-
- 40.
If by selling an article for ₹390, a shopkeeper gains 20%, then the price of article is यदि किसी दुकानदार को एक वस्तु को 390 सुपर बेचने पर 20% का लाभ होता है, तो वस्तु का क्रय मूल्य है
- A.
₹324
- B.
₹321
- C.
₹323
- D.
₹325
Correct Answer
D. ₹325Explanation
If the shopkeeper gains a 20% profit by selling an article for ₹390, it means that the selling price is 120% of the cost price. To find the cost price, we can set up the equation:
120% of the cost price = ₹390
Dividing both sides by 120% (or multiplying by 100/120), we get:
Cost price = ₹325Rate this question:
-
- 41.
In a rhombus , the lengths of diagonals are 16 cm and 12 cm . The side of the rhombus is एक समचतुर्भुज में, विकर्णों की लंबाई 16 सेमी और 12 सेमी है। समचतुर्भुज का भुजा है
- A.
9 cm
- B.
7 cm
- C.
8 cm
- D.
10 cm
Correct Answer
D. 10 cmExplanation
The diagonals of a rhombus bisect each other at right angles. Therefore, we can use the Pythagorean theorem to find the length of one side of the rhombus. Let x be the length of one side. Applying the Pythagorean theorem, we have (x/2)^2 + (x/2)^2 = 12^2. Simplifying this equation gives x^2/4 + x^2/4 = 144. Combining like terms, we get 2x^2/4 = 144. Simplifying further, we have x^2/2 = 144. Multiplying both sides by 2, we get x^2 = 288. Taking the square root of both sides, we find x = sqrt(288) ≈ 16.97. Therefore, the length of one side of the rhombus is approximately 17 cm. Since this is not an option, we can round down to the nearest whole number, which is 16 cm.Rate this question:
-
- 42.
'Cotopaxi' is an active volcano situated in 'कोटोपाक्सी' एक सक्रिय ज्वालामुखी है स्थित है
- A.
Sicily सिसिली
- B.
Hawaii हवाई
- C.
Andes एंडीज
- D.
Rockies चट्टानों की
Correct Answer
C. Andes एंडीजExplanation
The correct answer is 'Andes' because Cotopaxi is an active volcano situated in the Andes mountain range.Rate this question:
-
- Accreditation Quizzes
- Advanced Placement Quizzes
- AED Exam Quizzes
- Art Exam Quizzes
- Banking Exam Quizzes
- BISC Exam Quizzes
- CADET Exam Quizzes
- CAE Listening Quizzes
- CHS Exam Quizzes
- Computer Operator Exam Quizzes
- Cosmetology State Board Quizzes
- CSAT Quizzes
- CVS Exam Quizzes
- EHR Exam Quizzes
- Engineering Exam Quizzes
- English Exam Quizzes
- Entrance Exam Quizzes
- FSHN Exam Quizzes
- GATE Quizzes
- IGCSE Quizzes
- IT Certification Quizzes
- JEE Exam Quizzes
- Management Exam Quizzes
- Ministerial Exam Quizzes
- OCA Exam Quizzes
- Online Test Quizzes
- Physical Exam Quizzes
- Police Exam Quizzes
- Practice Exam Quizzes
- Prelim Exam Quizzes
- Professional Certification Quizzes
- SNAP Quizzes
- SSC Quizzes
- SSC CGL Quizzes
- UGC NET Exam Quizzes
- UPSC Quizzes
Back to top