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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 2551. |
Explain the following terms:i. GSMii. CDMA |
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Answer» GSM: Global System for Mobiles, it is the international standard for wireless technology. GSM allows users to utilize one phone and one number in many countries throughout the world. CDMA: Code Division Multiple Access: a digital wireless telephony transmission technique. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. |
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| 2552. |
Write two advantages of using open source software over proprietary software. |
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Answer» (i) Source Code available for modification and redistribution (ii) Freely available for usage |
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| 2553. |
Given a data frame df1 as shown below:CityMaxtempMinTempRainFallDelhi403224.1Bengaluru312536.2Chennai352740.8Mumbai292135.2Kolkata392341.8(i) Write command to compute sum of every column of the data frame.(ii) Write command to compute mean of column Rainfall.(iii) Write command to compute average maxTemp, Rainfall for first 5 rows |
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Answer» (i) df1.sum() (ii) df1[‘Rainfall’].mean() (iii) df1.loc[:11, ‘maxtemp’:’Rainfall’].mean( ) |
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| 2554. |
What is Pivoting? Name any two functions of Pandas which support pivoting. |
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Answer» Pivoting means to use unique values from specified index/columns to form apex of the resulting dataframe. Pivot() and pivot_table() methods |
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| 2555. |
Using someone else's work and taking credit for it a)Fair Use b)Ethical c)to plagiarize |
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Answer» c) to plagiarize |
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| 2556. |
Consider the following dataframe, and answer the questions given below:import pandas as pddf = pd.DataFrame({“Quarter1":[2000, 4000, 5000, 4400, 10000], ""Quarter2":[5800, 2500, 5400, 3000, 2900], "Quarter3":[20000, 16000, 7000, 3600, 8200],"Quarter4":[1400, 3700, 1700, 2000, 6000]})(i) Write the code to find mean value from above dataframedf over the index and column axis. (Skip NaN value)(ii) Use sum() function to find the sum of all the values over the index axis. (iii) Find the median of the dataframedf. |
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Answer» (i) print(df.mean(axis = 1, skipna = True)) print(df.mean(axis = 0, skipna = True)) (ii) print(df.sum(axis = 1, skipna = True)) (iii) print(df.median()) |
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| 2557. |
Write a small python code to drop a row from data frame labeled as 0. |
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Answer» # Drop rows with label 0 df = df.drop(0) print(df ) |
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| 2558. |
Write a small python codeto create a dataframewith headings(a and b) from the list given below :[[1,2],[3,4],[5,6],[7,8]] |
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Answer» import pandas as pd df = pd.DataFrame([[1, 2], [3, 4]], columns = ['a','b']) df2 = pd.DataFrame([[5, 6], [7, 8]], columns = ['a','b']) df = df.append(df2) |
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| 2559. |
Write a python code to create a data frame with appropriate headings from the list given below :['S101', 'Amy', 70], ['S102', 'Bandhi', 69], ['S104', 'Cathy', 75], ['S105', 'Gundaho', 82] |
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Answer» import pandas as pd # initialize list of lists data = [['S101', 'Amy', 70], ['S102', 'Bandhi', 69], ['S104', 'Cathy', 75], ['S105', 'Gundaho', 82]] # Create the pandas DataFram df = pd.DataFrame(data, columns = ['ID', 'Name', 'Marks']) # printdataframe. print(df ) |
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| 2560. |
What is full form of HTTP and what is its use? |
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Answer» HyperText Transfer/Transmission Protocol Hypertext Transfer Protocol is the main protocol of the World Wide Web. When you request a web page by typing its address into your web browser, that request is sent using HTTP. The browser is an HTTP client, and the web page server is an HTTP server. |
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| 2561. |
Write the HTML code to display links of a web page in yellow colour. |
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Answer» <Body link = “yellow”> |
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| 2562. |
Write the full forms of:(i) URL (ii) <LI>(iii) <TD>(iv) HTML |
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Answer» Uniform Resource Locator List Item Table Data Hyper Text Markup Language |
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| 2563. |
As life gets busier, it becomes difficult for everyone to keep a track with school & college friends, old colleagues, old neighbours and favourite teachers. It is important to keep in touch with all your near and dear ones. At times, people sitting miles away doing similar kind of activity or solving similar kind of problems can help you to achieve goals faster by sharing their experiences. Similarly people belonging to different socio-economic background can change your perspective and can enhance your understanding of various cultures.a. Suggest two real time tools that are suitable for the above-mentioned activities. b. What is the generic name used for such tools? |
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Answer» (a) Facebook and Twitter (b) Social Networking |
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| 2564. |
Which one of the following is an e-Shopping website:(i) Flipkart (ii) Amazon (iii) Snapdeal (iv) All of above |
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Answer» (iv) All of above |
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| 2565. |
What is meant by a ‘broad spectrum antibiotic’? |
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Answer» The antibiotic which is effective against a wide range of microorganisms is known as broad spectrum antibiotic. For example, chlorophenicol. |
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| 2566. |
Which of the following is not the source of virus?(a) Email attachments(b) Pen drives (c) Typing through key board (d) Downloading files |
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Answer» Typing through key board is not the source of virus. |
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| 2567. |
Which of them is correct XML tag(a) < first name > (b) <6class>(c) <name>(d) All of the above |
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Answer» <name> is s correct XML tag. |
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| 2568. |
Which statement is true? (a) All XML elements must have a closing tag. (b) All XML elements must be in lower case.(c) All XML document must have a DTD.(d) All of the above |
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Answer» (d) All of the above |
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| 2569. |
Out of the following, which one will be altered or modified by a computer virus? (a) Operating System (b) Speed of Network Connectivity (c) Application Software (d) All of the above |
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Answer» (d) All of the above |
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| 2570. |
Border, cellspacing, cellpadding, align are the attributes of (a) <body>(b) <img>(c) <table>(d) None of these |
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Answer» Border, cellspacing, cellpadding, align are the attributes of <table> |
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| 2571. |
Google (www.google.com) is a (a) Search Engine (b) Number in Math (c) Chat service on the web (d) Directory of images |
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Answer» Google (www.google.com) is a Search Engine . |
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| 2572. |
Match the following : (i) Nehru(i) Red Shirts(ii) Vasco-da-Gama(ii) Power House of the North(iii) Garibaldi(iii) Discovery of India(iv) Derby(iv) India(v) Non-Aligned country(v) Portuguese sailor |
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| 2573. |
Distinguish between diamagnetic, para-magnetic and ferromagnetic substances. |
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| 2574. |
When asked to set up an experiment to show that ‘light is necessary for photosynthesis’, a student ran to the school garden and set up the experiment using a plant growing in the school garden. The experiment failed. His fellow student made the following suggestions to get success. Student A: Safranin should be used instead of iodine. Student B: The leaf should not be boiled in alcohol to remove chlorophyll before testing for starch. Student C: Transparent paper strip should be used instead of black paper strip. Student D: The plant should be de-starched before starting the experiment. Which student made the right suggestion? |
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Answer» Student D made the right suggestion because destarching of the leaf by keeping the plant in darkness before starting the experiment is essential. |
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| 2575. |
A student took the following samples to find out their pH using pH paper: dilute hydrochloric acid, lemon juice, washing soda and soap solution. The teacher remarked that one of the samples taken was not proper. To which sample was the teacher referring to? |
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Answer» The teacher was referring to washing soda because it is in powder form not in liquid form. To find pH using pH paper, the sample should be in liquid form. |
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| 2576. |
When asked to set up an experiment to show that ‘light is necessary for photosynthesis’, a student ran to the school garden and set up the experiment using a plant growing in the school garden. The experiment failed. His fellow student made the following suggestions to get success.Student A: Safranin should be used instead of iodine. Student B: The leaf should not be boiled in alcohol to remove chlorophyll before testing for starch. Student C: Transparent paper strip should be used instead of black paper strip. Student D: The plant should be de-starched before starting the experiment. Which student made the right suggestion? |
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Answer» Student D made the right suggestion because destarching of the leaf by keeping the plant in darkness before starting the experiment is essential. |
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| 2577. |
Riya performs two set of experiments to study the length of the foam formed which are as follows : Set I : She takes 10 ml of distilled water in test tube "A", and adds 5-6 drops of liquid soap in it and shakes the test tube vigorously. Set II : She takes 10 ml of distilled water in a test tube "A" and adds 5-6 drops of liquid soap with half spoonful of CaSO4 in it and shakes the test tube. Write your observation and reason. |
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Answer» Set I will have more length of foam because it consist of soft water. Set II will form less foam because it consist of hard water due to the presence of CaSO4. |
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| 2578. |
(i) What do you understand by ‘Watershed Management’? List any two advantages of watershed management. (ii) “Human beings occupy the top level in any food chain.” What are the consequences of this on our body? |
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Answer» (i) Scientific soil and water conservation is called watershed management. Its advantages are: (a) Increases production and income of watershed community. (b) Mitigates droughts and floods. (c) Increases the life of downstream dams reservoirs (Any two) (ii) (a) Maximum level of bio magnification occurs here because of progressive accumulation. (b) We get very small amount of energy as only 10% of the previous energy gets transferred at each trophic level. |
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| 2579. |
How does the amount of DNA remain constant through each new generation in a combination of DNA copies of two individuals? |
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Answer» Deoxyribonucleic acid (DNA) copying is an essential part of reproduction, as it passes genetic information from parents to offspring. The reproducing cells produce a copy of their DNA through some chemical reactions and result in two copies of DNA. The copying of DNA always takes place along with the creation of additional cellular structure. This process is then followed by the division of a cell into two cells. In this way, the amount of DNA remains constant through each new generation. |
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| 2580. |
Average revenue and price are always equal under (choose the correct alternative) :(a) perfect competition only(b) monopolistic competition only(c) monopoly only(d) all market forms |
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Answer» Average revenue and price are always equal under all market forms. Hence, the correct answer is option (d). |
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| 2581. |
State any one feature of oligopoly. |
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Answer» Feature of oligopoly : The demand curve under oligopolistic market form is indeterminate. |
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| 2582. |
State the meaning and properties of production possibilities frontier. |
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Answer» PPC is the curve which shows the combinations of two goods and services that can be produced with fuller the utilisation of a given amount of resources in the most efficient way and with a given production technology. Properties of PPC (a) Concave to the origin : PPC curve is concave to the origin. This is because of the increasing opportunity cost i.e. in accordance with the law of increasing marginal opportunity cost. (b) Downward sloping curve: PPC curve is downward sloping from left to right. This is because the production of every additional unit of one good, more and more units of other goods has to be sacrificed. |
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| 2583. |
What is meant by price ceiling ? Explain its implications. |
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Answer» Price Ceiling' is the maximum price that sellers can legally charge for a product or a service fixed by the government. Since the price celling level is normally below equilibrium price, there would be excess demand for the good, in the market leading to shortage of good. Such shortages, could lead to black marketing of the good. Detailed Answer : Price Ceiling : It refers to fixing of the maximum price of a commodity at a level lower than the equilibrium price. Government imposes price ceiling in case of essential commodities (Wheat, Sugar, Kerosene etc.) when the equilibrium price determined by free market forces of demand and supply is high. Implications of price ceiling : (i) Shortage (excess demand) : At this controlled price quantity demanded is more than quantity supplied. It creates a shortage and to overcome this shortage government may enforce the rationing system. (ii) Black marketing : If rationing is not administered by the government effectively it results in black marketing. Due to excess demand buyers will compete and they would be willing to buy a commodity at a higher price than the price fixed by the government. |
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| 2584. |
Distinguish between microeconomics and macroeconomics. |
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Answer» Following table shows the distinction between microeconomics and macroeconomics
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| 2585. |
Study the flow chart given below. Name the hormones involved at each stage and explain their role. |
Answer»
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| 2586. |
What is meant by the following :(i) Somatic hybrid(ii) Micropropagation(iii) Explant(iv) Somaclones(v) Tissue culture |
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Answer» (i) Somatic hybrid : Somatic hybrid is a product obtained by the fusion of somatic cell protoplast obtained from two different varieties or species of plants cultured on a suitable nutrient medium under sterile conditions. (ii) Micropropagation : Micropropagation is the method of producing thousands of plant through tissue culture method. (iii) Explant : The part of the plant from which a new plant is generated by the method of tissue culture is called explant. (iv) Somaclones : The genetically identical plant developed from any part of the plant by tissue culture or micropropagation is called somaclones. (v) Tissue culture : The technique to generate whole plant from an explant with in vitro conditions on a suitable synthetic medium is called tissue culture. |
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| 2587. |
Why are engineered vectors preferred by biotechnologists for transferring the desired genes into another organism? |
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Answer» Engineered vectors are preferred by biotechnologists because they help in easy linking of foreign DNA and selection of recombinants from non-recombinants. |
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| 2588. |
Name the correct therapy for an infected child suffered from hereditary disease. |
| Answer» Gene therapy. | |
| 2589. |
In which part of the atomosphere ‘good’ ozone is found? Name the unit used for measuring the thickness of ozone in air column. |
| Answer» Stratosphere Dobson unit | |
| 2590. |
Which structure developed from Parthenium plant causes ‘allergy’ disease in human? |
| Answer» Pollen grain. | |
| 2591. |
Write any two benefits of lactic acid bacteria. |
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Answer» (i) Digestion of milk protein to cause curdling ofmilk. (ii) Increase in vitamin B12 content of curd. |
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| 2592. |
Name the scientists who postulated ‘chromosomal’ theory of inheritance. |
| Answer» Waltor Sutton and Theodor Boveri. | |
| 2593. |
Read the passage given below and answer the questions that follow: 1. Why does a person become overconfident ? The reason lies in over assessment of his capabilities. Sometimes people over assess their competence and jump into situations that are beyond their control. 2. Napoleon Bonaparte who became the Emperor of France would say that the word 'impossible' was common only amongst the fools. The overconfident Napoleon invaded Russia in the winter of 1812. This proved to be a big disaster. 3. Overconfidence generally leads people into misadventures, endangering their chances in life. It is wisely said that, any achievement is a result of two factors, one's personal planning and support from the external world. People, take into account only their planning, generally ignoring the external factors. They become unable to foresee future developments. Hence the great risk of failure arises. 4. Then there is a question : how can one manage overconfidence ? The formula is very simple, before taking a decision discuss the matter with other informed people with an objective mind and when it is proved that you are about to go off the path, accept reality and say without delay, "I was wrong." 5. Overconfidence is a flaw characteizing people who lack the virtue of modesty. Modesty makes you a realist; you become a person who is cut down to size. People of this kind become very cautious;. before taking an action they assess the whole situation. They adopt a realistic approach. 6. Overconfident people live within their own thoughts. They know themselves but they are unaware of others. Living inside their own cell, they are unable to make use of the experiences of others. This kind of habit is highly damaging to all concerned. 7. There is a saying that the young man sees the rule and the old man sees the exception. With a slight change, I would like to say that the overconfident person sees the rule and the confident person sees the exception. Overconfident people are always at risk. It is said that taking risk is good, but it must be well calculated otherwise it becomes very dangerous.Find words for the meanings given below : (a) Mishap (para 3) (b) Threatening (para 3) (c) Evaluate (para 7) |
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Answer» (a) misadventure (b) endangering (c) assess |
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| 2594. |
You are Kartik/Kartika of 59 Indrapuram, Meerut. You have joined a crash course at a coaching centre in New Delhi and need an accomodation since the coaching centre is not offering any hostel facility. Write a letter to Manager, Help Desk Services, New Delhi enquiring about the facilities offered by them. |
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Answer» 59 Indrapuram Meerut 16 May 20xx The Manager Help Desk Services New Delhi Subject : Enquiry Regarding Accommodation Sir With reference to your advertisement in The Times of India dated 10 may 20xx regarding the facility of paying guest services provided by you, I would like you to furnish certain details. I am a student of class X and have joined a coaching centre in New Delhi. I need an accommodation as paying guest for two months i.e. May and June. Kindly let me know whether you provide single or twin sharing in rooms, monthly charges, transport facility and the power supply /power back up facility provided by you. I shall be obliged if you send the details at the earliest so that I can shift and join my classes. Thanking you Yours sincerely Kartika |
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| 2595. |
Photoelectric emission from a given surface of metal can take place when the value of a ‘physical quantity’ is less than the energy of incident photon. The physical quantity is : (a) Threshold frequency (b) Work function of surface (c) Threshold wave length (d) Stopping Potential |
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Answer» (b) Work function of surface |
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| 2596. |
The magnetic flux linked with a coil changes by 2×10-2Wb when the current changes by 0.01A. The self inductance of the coil is_______. |
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Answer» The self inductance of the coil is 2 H. |
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| 2597. |
A photon beam of energy 12.1eV is incident on a hydrogen atom. The orbit to which electron of H-atom be excited is (a) 2nd (b) 3rd (c) 4th (d) 5th |
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Answer» (b) third orbit |
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| 2598. |
A free floating magnetic needle at North pole is __________to the surface of earth. |
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Answer» North pole is vertical. |
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| 2599. |
What did Einstein feel while looking at the sunset from his room’s window? |
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Answer» He felt that it was humanity that had sunk into devilish darkness and the reddish glow in the sky was the blood of humanity spilling all over the sky from earth. |
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| 2600. |
Why did Einstein want harmony between science and spirituality while teaching in educational institutes? |
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Answer» While teaching in educational institutes, Einstein wanted harmony between science and spirituality because without harmony between science and spirituality, the destruction would continue unabated. |
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