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. |
Do samples provide better results than the surveys? Give reason for your answer. |
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Answer» Yes, samples survey provide better results than census. A sample refers to a group or section of the population from which information is to be obtained. A good sample is generally smaller than the population and is capable of providing ‘ reasonably accurate information about the population at a much lower cost and shorter time. Suppose you want to study the average income of people in a particular state, according to the census method, we need to find out the income of every individual in the region, add them up and divide by number of individuals to get the average income of people in the state. This method would require huge expenditure, as a large number of investigators are to be employed. Alternatively, if a representative sample of few individuals is selected from the state to find their income, it saves time, money and energy in the process of determination of income. To sum up, sampling is considered a better method due to following reasons:
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| 2. |
Rewrite the following code using switch case statement. if(day == 1) cout<<“Sunday”; else if(day == 2) cout<<“Monday”; else if(day == 7) cout<<“Saturday”; else cout <<“Wednesday”; |
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Answer» switch (day) { case 1: cout<<“Sunday”;break; case 2: cout<<“Monday”;break; case 7: cout<<“Saturday”;break; default : cout<<“Wednesday”; } |
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| 3. |
_____ any men in the hall? A) Are there B) Are their C) Are they D) Is there |
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Answer» Correct option is A) Are there |
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| 4. |
for(int i=2, sum=0; i <= 20; i=i+2) sum += i; Rewrite the above code using while loop. |
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Answer» int i = 2; sum=0; while (i<=20) { sum += i; i = i + 2; } |
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| 5. |
Suppose M[5][5] is a 2D array that contains the elements of a square matrix. Write C++ statements to find the sum of the diagonal elements. |
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Answer» for (i = 0; i < 5, i++) for (j = 0; j < 5; j++) if (i == j) S = S + M[i][j]; |
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| 6. |
Predict the output of the following C++ program. #include <iostream.h>int main() { int array[] = {1, 2, 4, 6,7,5}; for (int n =1; n<=5; n++) array [n] = array [n – 1 ]; for (n = 0; n <= 5; n++) cout<< array [n]; return 0; } |
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Answer» Answer is 1, 1, 1, 1, 1, 1 |
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| 7. |
The first two stages of formation of a company are ……….. (i) Issue of prospectus (ii) Promotion (iii) Issue of share certificate (iv) Registration (a) (i) and (ii) (b) (ii) and (iv) (c) (ii) and (iii)(d) (i) and (iii) |
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Answer» (b) (ii) and (iv) |
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| 8. |
How many time the following for loop will execute? Justify.for(i = 0; ; i ++) { if(i > 5) cout<<“continue”; else cout<<“over”; } |
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Answer» Here the loop becomes infinite because the check condition is missing. |
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| 9. |
A: _____ there many mice in the house? B: No, there _____ . A) Are / are B) Are / not C) Are / aren’t D) Are / in |
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Answer» C) Are / aren’t |
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| 10. |
How many time the following for loop will execute? Justify.for(i = 0; ; i ++){if(>5)cout<<"continue”; else cout<<"over";} |
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Answer» Here the loop becomes infinite because the check condition is missing. |
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| 11. |
How many times the following loop will execute? int S = 0, i = 0; do { S + = i;i++; } while(i < 5); |
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Answer» 5 times loop will execute. |
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| 12. |
How many times the following loop will execute? int m = 2 do { cout<<“Welcome”; m++ ; } while (m>10); |
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Answer» Only one time |
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| 13. |
A company may appoint more than 15 directors after passing a ……….. resolution. (a) Special (b) Ordinary (c) Usual (d) Commanding |
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Answer» Correct Answer is: (a) Special |
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| 14. |
Sonet wants to execute a statement more than once. From the following which is exactly suitable. (a) if (b) loop (c) switch (d) if else if ladder |
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Answer» loop is exactly suitable. |
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| 15. |
A person can hold the position of Directorship in different companies upto the maximum of ………… (a) 15 (b) 10 (c) 18 (d) 20 |
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Answer» A person can hold the position of Directorship in different companies upto the maximum of 20. |
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| 16. |
In while loop, the loop variable should be updated? (a) along with while statement (b) after the while statement (c) before the while statement(d) inside the body of while |
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Answer» (d) Inside the body of while |
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| 17. |
_____ there _____ chairs in the class? A) Are / a B) Are / some C) Are / there D) Are / any |
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Answer» D) Are / any |
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| 18. |
Yes, there are _____ chairs, but there are not _____ desks. A) some / any B) any / some C) any / any D) some / some |
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Answer» A) some / any |
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| 19. |
............. search method is an example for ‘divide and conquer method’. |
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Answer» Binary search method is an example for ‘divide and conquer method’. |
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| 20. |
1. Name the type or loop which can be used to ensure that the body of the loop will surely be executed at least once. 2. Consider the code given below and predict the output. for (int i=1; i<=9;i=i+2){ if (i==5) continue;cout<<i<<" ";} |
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Answer» 1. do while loop(Exit controlled loop) 2. 1 3 7 9. It bypasses one iteration of the loop when i = 5. |
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| 21. |
........ search method is an example for ‘divide and conquer method’. |
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Answer» goto search method is an example for ‘divide and conquer method’. |
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| 22. |
Divide and conquer method used in .......... search. |
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Answer» Divide and conquer method used inbinary search. |
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| 23. |
There’s _____ electric cooker. A) an B) some C) any D) a |
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Answer» Correct option is A) an |
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| 24. |
Are there _____ trees and flowers in the garden? A) a B) some C) any D) are |
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Answer» Correct option is C) any |
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| 25. |
Is there _____ garden? A) any B) inC) a D) some |
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Answer» Correct option is C) a |
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| 26. |
There’s _____ open-fire in the living room? A) a B) some C) an D) any |
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Answer» Correct option is C) an |
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| 27. |
How many chairs are there in the room? A) Are four. B) Are five chairs there. C) There’s one. D) There’s a chair. |
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Answer» Correct option is C) There’s one |
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| 28. |
Write a function to sort a list through insertion sorting. |
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Answer» 1: Iterate from arr[1] to arr[n] over the array. |
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| 29. |
Explain micro nutrients. |
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Answer» The term micronutrients is used to describe vitamins and minerals in general. Humans must obtain micronutrients from food since your body cannot produce vitamins and minerals — for the most part. That's why they're also referred to as essential nutrients. |
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| 30. |
Write a program to input a list of numbers and search an element in the list. |
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Answer» a=list(input('enter the list')) b=input('enter the number to be found')) for i in range(1,len(a)+1): if a[i]==b: print(i,"position of the element ") else: print('no element found') |
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| 31. |
Write queries (a) to (d) based on the tables EMPLOYEE and DEPARTMENT given below:Table: EMPLOYEETable: DEPARTMENTDEPTIDDEPTNAMEFLOORNOD001Personal4D002Admin10D003Production1D004Sales3(a) To display the average salary of all employees, department wise. (b) To display name and respective department name of each employee whose salary is more than 50000.(c) To display the names of employees whose salary is not known, in alphabetical order. (d) To display DEPTID from the table EMPLOYEE without repetition. |
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Answer» (a) SELECT AVG(SALARY) FROM EMPLOYEE GROUP BY DEPTID; (b) SELECT NAME, DEPTNAME FROM EMPLOYEE, DEPARTMENT WHERE EMPLOYEE.DEPTID= DEPARTMENT.DEPTID AND SALARY>50000; (c) SELECT NAME FROM EMPLOYEE WHERE SALARY IS NULL ORDER BY NAME; (d) SELECT DISTINCT DEPTID FROM EMPLOYEE; |
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| 32. |
(i) A table, ITEM has been created in a database with the following fields: ITEMCODE, ITEMNAME, QTY, PRICE Give the SQL command to add a new field, DISCOUNT (of type Integer) to the ITEM table. (ii) Categorize following commands into DDL and DML commands? INSERT INTO, DROP TABLE, ALTER TABLE, UPDATE...SET |
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Answer» (i) ALTER TABLE Item ADD (Discount INT); (ii ) DDL: DROP TABLE, ALTER TABLE DML: INSERT INTO, UPDATE. ..SET |
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| 33. |
Between the two trees ______. A) a flower garden was B) garden was a flower C) a garden was flower D) was a flower garden |
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Answer» Correct option is D) was a flower garden |
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| 34. |
Between the two mountains ______. A) a river is B) is a river C) the river is there D) along the river |
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Answer» Correct option is B) is a river |
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| 35. |
In which way have microbes played a major role in controlling diseases caused by harmful bacteria? |
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Answer» Several micro-organisms are used for preparing medicines. Antibiotics are medicines produced by certain micro-organisms to kill other disease-causing micro-organisms. These medicines are commonly obtained from bacteria and fungi. They either kill or stop the growth of disease-causing micro-organisms. Streptomycin, tetracycline, and penicillin are common antibiotics. Penicillium notatum produces chemical penicillin, which checks the growth of staphylococci bacteria in the body. Antibiotics are designed to destroy bacteria by weakening their cell walls. As a result of this weakening, certain immune cells such as the white blood cells enter the bacterial cell and cause cell lysis. Cell lysis is the process of destroying cells such as blood cells and bacteria. |
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| 36. |
Write a short note on pollen kitt. |
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Answer» Pollenkitt is contributed by the tapetum and coloured yellow or orange and is chiefly made of carotenoids or flavonoids. It is an oily layer forming a thick viscous coating over the pollen surface. It attracts insects and protects damage from UV radiation. |
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| 37. |
Explain the role of microbes as biofertlizers. |
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Answer» Biofertilizers are organisms which are used to enhance the fertility of the soil and availability of nutrients like nitrogen and phosphorus to the crops. There are three types of bio fertilizers Example 1. Bacteria, (Rhizobium Azotobacter). 2. Cyanobacteria or Blue green algae (Anabaena Nostoc). 3. Fungi (Mycorrhizae like glomus, VAM). 1. Free living nitrogen fixing bacteria They fix atmospheric nitrogen in the soil and made available to plants. Example: The best example is Azotobacter. 2. Symbiotic nitrogen fixing bacteria These bacteria show symbiotic association with the root nodules of leguminous plants. They convert atmospheric nitrogen and made available to plants. Example : Rhizobium the most important symbiotic nitrogen fixing bacteria. Frankia, mycelia bacterium (actinomycetes) shows symbiotic association with the root nodules of several non leguminous plants like casurina, rubus etc. 3. Free living nitrogen fixing cyanobacteria Cyanobacteria are group of autotrophic microbes also called Blue green algae (BGA), they help in nitrogen fixation in paddy fields. These are extremely low cost biofertilizers. Example: Anabaena, Nostoc. 4. Symbiotic nitrogen fixing cyanobacteria. These nitrogen fixing cyanobacteria lead symbiotic mode of life with several plants like cycas roots, lichens, liver worts, Azolla (fern) Example : Anabaena and Nostoc in the corolloid roots of cycas. 5. Mycorrhizae The symbiotic association of fungus with the roots of higher plants is called mycorrhizae. Example : Glomus species fix phosphorus in the soil and made available to plants. |
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| 38. |
What is biocontrol? Name the principle behind biological method of pest control. Mention examples of bio control agents and their function. |
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Answer» It is the use of micro organisms to control or eliminate insect pests. The micro organisms employed in biological control are called bio control agents. Principle It is based on prey – predator relationship. Examples 1. Ladybird and Dragon flies useful to get rid of aphids and mosquitoes. 2. Bad llus thuringiensis (Bt) is used to control butterfly caterpillar. Spores available in sachets are mixed with water and sprayed on plants, eaten by insect larva, toxin released in gut kills larvae. Example: Bt toxin genes are introduced into cotton plants and made resistant to insect pests such as cotton boll worms, stem borer, aphids and beetles. 3. Nucleo polyhedrovirus ( NPV) is a virus suitable for narrow spectrum insecticide applications. It has no negative impacts on plants, mammals, birds, fish or target insects. It is suitable for overall integrated pest Management programme (IPM) in ecologically sensitive areas. |
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| 39. |
What is genetic code? Enumerate the characteristics of genetic code. |
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Answer» Genetic code is a sequence of three nucleotides on DNA or mRNA, codes for a specific amino acids for protein synthesis. Features of Genetic code
Example : valine is coded by 4 different codons GUA, GUC, GUU and GUG
Example : AUG codes for methionine .
Example : AUG in eukaryotas, GUG in prokaryotes
Example: UAA (Ochre), UGA (Amber) and UGA (Opal). |
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| 40. |
What is noise pollution? Mention its causes, effects and preventive measures. |
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Answer» Noise pollution: A loud unpleasant or unwanted sound is called noise. Sources of noise pollution
Effects of Noise Pollution
Prevention of noise pollution
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| 41. |
What is biocontrol? Name the principle behind biological method of pest control. Mention examples of biocontrol agents and their function. |
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Answer» It is the use of micro organisms to control or eliminate insect pests. The micro organisms employed in biological control are called bio control agents. Principle It is based on prey – predator relationship. Examples 1. Ladybird and Dragon flies useful to get rid of aphids and mosquitoes. 2. Bacillus thuringiensis (Bt) is used to control butterfly caterpillar. Spores available in sachets are mixed with water and sprayed on plants, eaten by insect larva, toxin released in gut kills larvae. Example: Bt toxin genes are introduced into cotton plants and made resistant to insect pests such as cotton boll worms, stem borer, aphids and beetles. 3. Nucleo polyhedrovirus ( NPV) is a virus suitable for narrow spectrum insecticide applications. It has no negative impacts on plants, mammals, birds, fish or target insects. It is suitable for overall integrated pest Management programme (IPM) in ecologically sensitive areas. |
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| 42. |
A die is thrown once. Find the probability of getting an even prime number. |
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Answer» A die is thrown once. Therefore, possible outcomes are {1, 2, 3, 4, 5, 6}. Hence, total possible outcomes = n(S) = 6. Let the event E be the event of getting an even prime number. Since, only even prime number is 2. Therefore, number of outcomes favourable to event E is n(E) = 1 Hence, the probability of getting an even prime number = \(\frac{n(E)}{n(s)} = \frac{1}{6}\) |
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| 43. |
The American penny (one cent coin) is ___. |
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Answer» Correct answer is brown |
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| 44. |
Peter has entered a newspaper ________ for the best-dressed man in London. A) exhibition B) contest C) show D) test E) competition |
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Answer» Correct option is B) contest |
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| 45. |
A wooden floor is usually ___. |
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Answer» Correct answer is brown |
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| 46. |
His friend lives ______ on the other side of town. A) near B) here C) somewhere D) anywhere |
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Answer» Correct option is C) somewhere |
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| 47. |
Some people had to escape in boats when the river ______ its banks. A) overthrew B) overflowed C) overcame D) overpowered E) overhung |
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Answer» Correct option is B) overflowed |
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| 48. |
Men going to funerals most often wear ___suits. |
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Answer» Correct answer is black |
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| 49. |
Another word for work or employment is ______ |
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Answer» Correct option is job |
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| 50. |
Is there a telephone ________ anywhere near here, please? A) place B) shop C) box D) compartment E) room |
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Answer» Correct option is C) box |
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