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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Write the chemical equations for reaction, if any, of (i) Na2O and (ii) Al2O3 with HCl and NaOH both. Correlate this with the position of Na and Al in the periodic table, and infer whether the oxides are basic, acidic or amphoteric. |
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Answer» i. Na2O + 2HCl → 2NaCl + H2O Na2O + NaOH → No reaction As Na2O reacts with an acid to form salt and water it is a basic oxide. This is because Na is a reactive metal lying on the extreme left of the periodic table. ii. Al2O3 + 6HCl → 2AlCl3 + 3H2O Al2O3 + 2NaOH → 2NaAlO2 + H2O As Al2O3 reacts with an acid as well as base to form a salt and water. It is an amphoteric oxide. Al is a moderately reactive element lying in the centre of main group elements in the periodic table. |
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| 2. |
Comment on the chemical reactivity of d-block and f-block elements. |
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| 3. |
Elements belonging to which groups constitute the p-block and why? |
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| 4. |
Which of the following forms a bridge between reactive s-block elements and less reactive group 13 and 14 elements? (A) Inert gases (B) Transition metals (C) Halogens (D) Inner transition metals |
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Answer» Correct option is: (B) Transition metals The bridge between s-block element and group 13 and 14 elements are transition metal (d-block elements) (B) Transition metals |
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| 5. |
Rancidity is ……………….. reaction. A) Reduction B) Oxidation C) Redox D) Double displacement |
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Answer» Correct option is B) Oxidation |
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| 6. |
What is exothermic reaction? |
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Answer» Exothermic reaction: Reaction during which heat is released. |
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| 7. |
Name the two series that constitute f-block. |
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Answer» The f-block constitutes two series of 14 elements called the lanthanide and the actinide series which are placed one below the other. |
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| 8. |
How many products are formed in each of the above reactions? |
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Answer» A single product is formed in each of the above reaction. |
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| 9. |
A mineral is called an ore if(1) The metal present in the mineral is costly.(2) A metal can be extracted profitably from it.(3) A metal can be extracted from it.(4) A metal cannot be extracted from it. |
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Answer» (2) A metal can be extracted profitably from it. |
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| 10. |
Identify methods for prevention of rusting from the following. 1) By applying oils and greases on surfaces 2) By paint coating on surfaces 3) By galvanisation 4) By keeping the iron articles in air A) 1, 2 B) 1, 2, 3 C) 4 D) 2, 4 |
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Answer» Correct option is B) 1, 2, 3 |
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| 11. |
Define products. |
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Answer» Products: New substances formed in the reaction are called products. |
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| 12. |
Ruby and blue sapphire gemstone are impure form of which metal? |
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Answer» Ruby: Impurity of Cr in Al2O3 |
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| 13. |
What are edible oils? |
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Answer» Edible oils are compounds of alcohols and organic acids (carboxylic acids). The compounds formed are known as esters of carboxylic acids. |
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| 14. |
What is reactants? |
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Answer» Reactants: The substances which undergo chemical change in the reactions are called reactants. |
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| 15. |
How much carbon % is found in cast iron and pig iron? |
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Answer» % carbon in cast iron = 4% |
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| 16. |
Anode and cathode are made up of which metal in electrolytic refining of metal? |
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Answer» Anode and cathode are made up of Copper (Cu) metal in electrolytic refining of metal. |
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| 17. |
What is a precipitate? |
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Answer» The precipitate is an insoluble substance. |
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| 18. |
State the use of antioxidants in food containing fats and oils. |
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Answer» Antioxidants are used to prevent oxidation of food containing fats and oils. |
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| 19. |
The changes which take place when fats and oils are oxidised:A. They become better in taste. B. They become rancid and give a good smell. C. They become rancid and their smell and taste change. D. The remain unaffected. |
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Answer» When fats and oils are oxidized, they become rancid and their smell and taste change. This phenomenon is called rancidity. Basically, oxidation causes rancidity |
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| 20. |
What is anode mud? |
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Answer» The impurities of zinc, nickel, iron etc. get collected below the anode is known as anode mud. |
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| 21. |
यदि किसी चतुर्भुज के दो कोण 60° तथा 120° के हैं तथा शेष दोनों कोण समान हैं, तो उनके मान ज्ञात कीजिए। |
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Answer» माना चतुर्भुज के दो समान कोण x हैं । ∵ चतुर्भुज के चारों कोणों का योग = 360° ∴ x + x + 60° + 120° = 360° ⇒ 2x + 180° = 360° ⇒ 2x = 360° - 180° = 180° ⇒ x = 180°/2 = 90° |
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| 22. |
What happen when fats and oils are oxidized ? |
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Answer» When fats and oils are oxidized, they become rancid. |
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| 23. |
Write the chemical reaction of Mond’s process for refining of nickel. |
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Answer» Ni + 4CO \(\overset{ 330-350k } {\longrightarrow}\) Ni(CO)4 |
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| 24. |
Write composition of german silver. |
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Answer» % Cu = 25% – 50% |
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| 25. |
Which complex ions are used for electroplating of silver and gold? |
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Answer» Complex ions used for electroplating of silver and gold are (Ag(CN)2]– and [Au(CN)2]– respectively. |
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| 26. |
एक समबहुभुज के अन्तःकोण की माप 108° है तो उसके भुजाओं की संख्या होगी। |
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Answer» भुजाओं की संख्या = 5 (क्योंकि पंचभुज के अन्तःकोणों का योग = 540° होता है।) |
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| 27. |
Ram creates a web page to record the sex of a student. But he has made a mistake that the student can select both male and female choices at a time. What is the reason for the same. Help him to correct the mistake. |
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Answer» To record sex of student radio buttons are used. Usually, radio buttons are provided as a group from which exactly one can be selected at a time by giving the same name for both radio buttons. But here Ram did not give same name for both buttons. Therefore the mistake. The correct code is as follows: <HTML> <HEAD> <TITLE>RADIO BUTTON</TITLE> </HEAD> <BODY> sex<input type="radio" name="sex" value="Male">Male <input type="radio" name="sex" value="Female">Female </BODY> </HTML> |
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| 28. |
Lena wants to create a web page, to select the district name from a combo. By default the combo box contain the district Trichur. Help her to do so. |
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Answer» <HTML> <HEAD> <TITLE>COBOBOX</TITLE> </HEAD> <BODY> DISTRICT <SELECT> <OPTION SELECTED>TRICHUR <OPTION>ERNAKULAM <OPTION>PALAKKAD </SELECT> </BODY> </HTML> |
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| 29. |
Nila wanted to set the picture “sky.jpg” as the background of his web page. Choose the correct tag for doing this.(a) IMG SRC = “sky.jpg">(b) <BODY SRC = “sky.jpg">(c) <IMG BACKGROUND= “sky.jpg">(d) <BODY BACKGROUD = “sky.jpg"> |
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Answer» (d) <BODY BACKGROUD = “sky.jpg"> |
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| 30. |
Give one word for the following statements:A machine capable of carrying out a complex series of actions automatically. |
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Answer» Artificial intelligence. |
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| 31. |
Multiple Motion to a Sewing Machinea. Motion of the needleb. Motion of the wheelc. Motion of footrest |
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Answer» a. Periodic (or) Oscillatory motion b. Rotatory motion c. Oscillatory motion |
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| 32. |
Figure 24-Ql shows graphs of pressure vs. density for an ideal gas at two temperatures T1 and T2.(a) T1 > T2 (b) T1 = T2(c) T1 < T2(d) any of the three is possible. |
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Answer» The correct answer is (a) T1 > T2 |
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| 33. |
Which of the following gases has maximum rms speed at a given temperature?(a) hydrogen (b) nitrogen(c) oxygen (d) carbon dioxide. |
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Answer» The correct answer is (a) hydrogen |
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| 34. |
The energy of a given sample of an ideal gas depends only on its (a) volume (b) pressure(c) density(d) temperature. |
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Answer» (d) temperature. |
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| 35. |
Write the significant features of Ubuntu? |
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Answer» 1.The desktop version of Ubuntu supports all normal software like Windows such as Firefox, Chrome, VLC, etc. 2. It supports the office suite called LibreOffice. 3. Ubuntu has in-built email software called Thunderbird, which gives the user access to email such as Exchange, Gmail, Hotmail, etc. 4. There are free applications for users to view and edit photos, to manage and share videos. 5. It is easy to find content on Ubuntu with the smart searching facility. 6. The best feature is, it is a free operating system and is backed by a huge open source community. |
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| 36. |
What is meant by multitasking? |
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Answer» Multiple applications can execute simultaneously in Windows, and this is known as “multitasking”. |
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| 37. |
Define Ubuntu? |
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Answer» Ubuntu is a Linux-based operating system. It is designed for computers, smartphones, and network servers. The system is developed by a UK based company called Canonical Ltd. |
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| 38. |
What is launcher? |
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Answer» The vertical bar of icons on the left side of the desktop is called the Launcher. The Launcher provides easy access to applications, mounted devices, and the Trash. All current applications on your system will place an icon in the Launcher. |
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| 39. |
How will you delete a file in Ubuntu OS? |
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Answer» A file / folder created by you can be moved to trash by using right click or by using menu. |
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| 40. |
Role Play: Students can be divided into groups and asked to debate the -views of the Moderates, Extremists, Revolutionaries, Annie Besant’s supporters, Justice Party, and British Government. |
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Answer» Characters: 1. British Government – Police forces, and Governor 2. Revolutionaries – Arbindo Gosh, Vanchinathan Bharathi (Songs) 3. Justice party – E.V.R (Periyar) 4. Moderates – V.O.Chidambaranar, Subramaniya siva, Rajaji, Satyamurti 5. Extremist – Bipin Chandra Pal Debate Between 1. Justice party – EVR and Rajaji on the issue of Hindi as a compulsory language at schools and temple entry incident. 2. Extremists and moderates – Prochangers and No changers. 3. British Government and Revolutionaries. The class can be divided into three groups each to represent (3 + 3) 2 persons can be selected for each group to represent the character. Character allotment can be given by the teacher concerned and the students are requested to prepare the dialogues. Points for Debate can be selected from the events (in Tamil Nadu as given in the lesson) Swadeshi Movement, Anti Hindi Agitation, Vedaranyam Salt March, Vaikom Satyagraha Quit India Movement, Non – Cooperation Movement. |
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| 41. |
Students can be asked to write a sentence or two about the important places of freedom struggle in Tamil Nadu. |
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Answer» Important Places of freedom struggle in Tamil Nadu a sentence or two about each place. Madras: 1. Thousands lights: Third session of Indian Nation Congress was held in 1887 with Badruddin Tyabji as president 362 members participated out of 607 were from Madras. 2. Thoothukudi: Swadesh ships plied from Thoothukudi to Colombo launched ’ by the Swadeshi steam Navigation company of V.O.Chidambaranar. 3. Tirunelveli: Mill workers led a strike under Swadeshi Movement. 4. Pondicherry: Haven for the revolutionists Maniyachi junction (Tirunelveli). Collector W.D’E.Ashe was shot dead by a revolutionary youth Vanchinathan. 5. Adayar (Madras): Home Rule Movement was started by Annie Besant in 1916. 6. Marina Beach: On 18th March 1919 Gandhi addressed a meeting on Marina Beach against ‘Black Act’ (Rowlatt Act). 7. Tiruchirapalli: Salt March started from here. 8. Vedaranyam: Salt march led by Rajaji ended by breaking salt law. 9. Thirupur: Martyrdom of Kumaran holding National Flag. 10. Madurai: Temple entry programme with Harijans in Meenakshi amman temple was organised. 11. Salem: Anti Hindi agitation. 12. Coimbatore: V.O. Chidambaranar made to pull oil press in the prison. |
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| 42. |
Differentiate Save, Save As and Save a Copy in Ubuntu OS? |
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Answer» Save: This will save the document without asking for a new name or location. It will over-write the original. SaveAs: This will prompt you to save the document using a dialog box. You will have the ability to change the file name of location. Save a Copy: This will prompt you to save a copy using the same dialog box as save as. You will have the ability to change the file name or location. If you changed the name or location of the document you will be working on the original document not the copy. That meAnswer:if you make additional changes and then hit save the original will be overwritten with new changes, but the copy you saved earlier will be left at the state of the ‘save a copy’. |
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| 43. |
Describe the role of Tamil Nadu in the Civil Disobedience Movement. |
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Answer» 1. Transformation of congress: In the 1920’s congress with Gandhi in leadership was transforming in to a broad based movement in Tamil Nadu. 2. The Madras session of the Indian National Congress in 1927 declared complete independence as its goal. 3. In the 1929 Pooma Swaraj was adopted as the goal at Lahore session of Congress. 4. In 1930 Gandhi launched the Civil Disobedience Movement by setting out on a salt satyagraha with a march to a Dandi. Role of Tamil Nadu: 1. Tamil Nadu was in the forefront of the Civil Disobedience Movement. 2. In city of Madras shops were picketed and foreign goods boycotted. Salt Satyagraha: Rajaji organised and led a Salt Satyagraha to Vedaranyam. The march started from Trichirapalli to Vedaranyam on 13th April 1930 and reached Vedaranyam in Thanjavur district on 28th April. Special Song: Composed by Ramalinganar (Nammakkal Kavingnar) for the March. Leaders who participated: T.S.S.Rajan, C.Swaminathar, Rukmani Lakshmipathi, Sardar Vedarathnam and K.Santhanam. Agitations: The Satyagraha’s under the leadership of T.Prakasan and K.Nageswara Rao set up a camp at Udayavanani near Madras. Police arrested them that led to Hartal in Madras. Clashes with the police in Tiruvallikeni lasted for three hours on 27th April 1930 left three dead. Response from the people: 1. Mill workers struck work across the province. 2. Women participated enthusiastically. 3. Volunteers attempted to offer Salt Satyagraha at Rameswaram, Thoothukudi, Uvari, Anjengo, Veppalodai, and Tharuvaikulam were stopped and arrested. Important Event: Bhashyam popularly known as Arya, hoisted the national flag atop St. George Fort on 26th January 1932. Satyamurti, actively picketed shops selling foreign clothes, organised processions and distributed pamphlets. Martyrdom of Tirupur Kumaran: On January 1932 a procession carrying national flags singing patriotic songs were brutally beaten up by police in Tirupur. Tirupur Kumaran fell dead holding the flag a loft. Thus civil Disobedience movement was one of the mass movements in Tamil Nadu. |
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| 44. |
Differentiate Thunderbird and Firefox in Ubuntu OS? |
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Answer» Thunderbird: 1. Ubuntu has in-built email software called Thunderbird. 2. It gives the user Access to email such as Gmail, Hotmail etc., 3. There are free applications for users to view and edit photos, to manage and share videos. Firefox: 1. Firefox is a internet browser, you can directly browse the internet. 2. It is the fastest browser and numerous features that protect you, from viruses and other common exploits. 3. Firefox has some advanced security measures that guard against the spyware and viruses. |
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| 45. |
Examine the origin and growth of Non-Brahmin Movement in Tamil Nadu. |
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Answer» As there was rapid growth of education in Madras Presidency, there was an increase in the number of educated non-Brahmins. They began to raise the issue of caste discrimination and unequal opportunities in employment and representation in elected bodies. The Congress also mainly consisted of Brahmins. The nonBrahmins then began to organise themselves into political organisations to protect their interests, such as the Madras Dravidian Association and the South Indian Liberal Federation. A non-Brahmin manifesto was also released. |
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| 46. |
Why is function an abstraction? |
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Answer» Once a function is defined, it can be used over and over and over again. Reusability of a single function several times is known as an abstraction. |
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| 47. |
A is like a sub algorithm.(a) function(b) data(c) variable(d) state |
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Answer» (a) function |
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| 48. |
Sequential, Alternative and Iterative comes under the classification of ….. : (a) Building blocks of algorithm (b) control flow statements (c) Algorithm design techniques(d) Abstraction |
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Answer» (b) control flow statements |
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| 49. |
The data stored in a variable is also called a …….. (a) process(b) data(c) value(d) constant |
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Answer» The data stored in a variable is also called a value |
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| 50. |
If the variable already has a value, and you are assigning a new value, what will happen to the old variable?(a) retained(b) added(c) lost(d) becomes 0 |
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Answer» Answer is (c) lost |
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