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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.
| 2051. |
Ramesh, Vivek and Sunil started a business by investing capitals in the ratio 4 : 5 : 6. After 3 months Vivek withdrew all his capital and after 6 months Sunil withdrew all his capital from the business. At the end of the year Ramesh received Rs. 6,400 as profit. Find the profit earned by Vivek. |
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Answer» Since Ratio of their capital is 4 : 5 : 6 :. Let Ramesh capital be 4x, Vivek capital be 5x and Sunil capital be 6x :. Ramesh invested Rs. 4x for 12 month Vivek invested Rs. 5x for 3 month Sunil invested Rs. 6x for 6 month :. Profit is distributed in the ratio i.e., 4x x 12 : 5x x 3 : 6x x 6 16x : 5x : 12x 16 : 5 : 12 Also 16 + 5 + 12 = 33 Now given that Ramesh profit is Rs. 6400 :. Ramesh share in the profit = 16/33 x Total profit 6400 = 16/33 xTotal profit Total profit = Rs. 13,200 Now Vivek share in the profit = 5/33 x 13200 = Rs. 2000 and Sunil share in the profit = 12/33 x 13200 = Rs. 4800 |
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| 2052. |
If f : R → R is defined by f(x) = 3x + 2, define f[f(x)]. |
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Answer» Write fog, if f : R → R and g : R →R are given by f(x) = 8x3 and g(x) = x1/3 . |
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| 2053. |
5. If |(x , x) (1 , x)| =|((3 , 4)(1 , 2)| , write the positive value of x. |
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Answer» We have ∵ |(x , x)(1,x)| = |(3,4),(1,2)| => x2 - x = 6 - 4 => x2 - x -2 = 0 => x2 - 2x + x -2 = 0 => x(x -2) +1(x - 2) = 0 |
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| 2054. |
Evaluate :∫(1+log x)2 /x dx |
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Answer» I = ∫(1 + log x )2 / x dx Let 1 + log x = z 1/x dx = dz => I= ∫z2 dz = z3/3 + c = 1/3 (1+logx)3+c |
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| 2055. |
Evaluate :∫dx/1+x2 for x→[1,√3] |
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Answer» I = ∫ (1+logx)2 /x dx Let 1 + log x = z 1/x dx = dz => I = ∫z2dz = Z3 / 3 +C =1/3(1 + logx)3 + c |
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| 2056. |
Cards marked with numbers 1, 3, 5… 49 are placed in a box and mixed thoroughly. One card is drawn from the box. Find the probability that the number on the card is (i) divisible by 3 (ii) a composite number (iii) Not a perfect square (iv) Multiple of 3 and 5. |
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Answer» (i) Cards marked with numbers which are multiples of 3 are 3, 9, 15, 21, 27, 33, 39 and 45. So, P (getting a number divisible by 3) = 8/25 (ii) P (composite number) = 10/25 (iii) P (not a perfect square) = 1 - P P (perfect square) = 1 - 4/25 = 21/25 (iv) P (multiple of 3 and 5) = 2/25 |
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| 2057. |
Although not mandatory, some entrepreneurs may file part of entrepreneurs memorandum District Industries Centre. Why? |
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Answer» This may be necessary for claiming certain incentives / subsidiesand for certain formalities at the state level. |
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| 2058. |
Write the output of the given code:<?php$sum=0;for($a=1; $a<=8; $a +=2)$sum = $sum + $a;echo($sum);echo("<BR>");echo($a);?> |
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Answer» The output is: 16 9 |
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| 2059. |
Write the HTML code to generate a Web Page in the format given below :Consider the following while writing the HTML code1. Background of page is yellow2. Title of the page is “gaming”3. Text of whole document is verdana4. Heading of the page is maroon and arial bold5. Image used is “image1.jpg”6. border of table is green and of size 27. background colour of table is white8. Image used in the table is “war.jpg” and “call.jpg”9. Horizontal line colour is red10. Bottom link is “game.html” |
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Answer» <HTML> <html><HEAD><TITLE> Gaming</TITLE></HEAD> <BODY bgcolor = “yellow”> <basefont face = “verdana” <H2 ALIGN=center><font color =”maroon” face = “arial bold”>Computer Gaming</font> </H2> <IMG SRC="image1.jpg" HEIGHT=150 WIDTH=200 ALIGN="right"> <P><B>A personal computer game(also known as a computer game or PC game) is a game played on a personal computer, rather than on a video game console or arcade machine. Computer games have evolved from the simple graphics and gameplay of early titles like Spacewarl, to a wide range of more visually advanced titles. <P>Basically there are four types of computer games:<BR> <OL><LI>Strategy <LI> First person shooters <LI> 3rd person views <LI> Racing </OL> <TABLE ALIGN=center BORDER=2 bordercolor="green"> <Caption> Top Games</Caption> <TR><td>Warcraft</td> <TD>Strategic game</TD> <TD><img src = war.jpg></TD> <td>Call of Duty</td> <TD>First Person shooter</TD> <TD><img src = call.jpg></TD> </tr> </table> <HR SIZE=2 COLOR=red> <FONT SIZE=2><P ALIGN=center>FOR FURTHER ENQUIRES :<A HREF="game.html"></A> </BODY></HTML> |
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| 2060. |
Name any two technologies which are equivalent to PHP. |
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Answer» Two technologies which are equivalent to PHP are JSP and ASP. |
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| 2061. |
Bimal was working in an enterprise on daily wages basis. It was difficult for him to fulfill the basic needs of his family. His daughter fell ill. He had no money for his daughter’s treatment. To meet the expenses of her treatment, he participated in a cycle race and won the prize money. The cycle company offered him a permanent pensionable job which he happily accepted. (i) By quoting the lines from the above para identify the needs of Bimal that are satisfied by the offer of cycle company. (ii) Also, explain two other needs of Bimal followed by above that are still to be satisfied. |
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Answer» (i) The offer of cycle company satisfied the following two needs of Bimal : (a) Physiological needs. These are basic salary of the job will satisfy this need. (b) Safety of Security needs. These are related to protection from physical and emotional harm. The pension plan in the permanent job will satisfy this need of Bimal. (ii) The other two needs of Bimal that are still to be satisfied are : (a) Affiliation or Belongingness needs. These needs include affection, acceptance and friendship. (b) Esteem needs. These needs relate to self-respect, autonomy, status, recognition and attention |
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| 2062. |
‘Recruitment’ is one of the specialized activities performed by human resource management. Mention any two other specialized activities of human resource management. |
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Answer» Following are the two specialized activities performed by human resource management: (a) Providing for social security and welfare of employees. (b) Developing compensation and incentive plans |
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| 2063. |
Give output of the following statements:(i) echo 10+3*2%3-6(ii) echo ltrim(“Examination”, “Ex”)(iii) echo date(“M-d-Y”, mktime(0,0,0,14,1,2001)) |
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Answer» (i) 4 (ii) amination (iii) Feb-01-2002 |
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| 2064. |
Describe 'Jhumming cultivation' in one sentence. |
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Answer» 'Slash and burn' agriculture in North-Eastern states of India. |
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| 2065. |
Write such reactions and facts about glucose which cannot be explained by open chain structure |
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Answer» The following facts and reactions cannot be explained by open chain structure of glucose. (ii) The penta-acetate of glucose does not react with hydroxylamine indicating the absence of free aldehydic group. |
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| 2066. |
Explain giving reasons:(i) Transition metals and their compounds generally exhibit a paramagnetic behaviour.(ii) The chemistry of actinoids is not as smooth as that of lanthanoids. |
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Answer» (i) This is due to presence of unpaired electrons in the (n–1) d orbitals of transition elements. |
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| 2067. |
Describe the three cropping seasons of India. |
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Answer» Three cropping seasons in India - Rabi, Kharif and Zaid. Rabi season : Rabi crops are sown in winter from October to December and harvested in summer from April to June. Some of the important rabi crops are wheat, barley, peas, gram and mustard. These crops are grown in large parts of India, states from the north and north - western parts such as Punjab, Haryana, Himachal Pradesh, Jammu and Kashmir, Uttarakhand and Uttar Pradesh are important for the production of wheat and other rabi crops. Availability of precipitation during winter months due to the western temperate cyclones helps in the success of these crops. Kharif season: Kharif crops are grown with the onset of monsoon in different parts of the country and these are harvested in September - October. Important crops grown during this season are paddy, maize, jowar, bajra, tur(arhar), moong, urad, cotton, jute, groundnut and soyabean. Zaid season : In between the rabi and the kharif seasons, there is a short season during the summer months known as the Zaid season. Some of the crops produced during 'zaid' are watermelon, muskmelon, cumumber, vegetables and fodder crops. |
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| 2068. |
What are Special Economic Zones? Why have they been set up? |
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Answer» SEZ or special economic zones are export processing zones which have quality infrastructure complemented with minimum possible regulations. Companies which set up production units in the SEZs do not have to pay taxes for an initial period of five years. |
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| 2069. |
One of the following is not a direct tax: (a) VAT (b) Corporate tax (c) Income tax (d) Health tax |
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Answer» One of the following is not a direct tax VAT. |
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| 2070. |
RBI has reduced CRR, SLR & bank rate during the recession period, what values are being promoted by the government? |
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Answer» Reducing CRR, SLR & bank rate will reduce interest rate of the commercial banks. It will make the loans cheaper, so people will be motivated to invest more. It will boost the economic growth Values: Economic growth, providing cheap credit , Fulfilling the requirements. |
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| 2071. |
Out of the Bank rate policy and open market operations, which will you prefer in India? |
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Answer» The bank rate policy should be preferred by the RBI because the policy of open market operations cannot be used effectively in our country. |
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| 2072. |
Why should be the top most role of the Central Bank in a developing economy like India? |
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Answer» To adopt measures like expansion, promotion and strengthen the banking and financial structures. |
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| 2073. |
Explain with reasons whether you 'agree' or 'disagree' with the statements :There are no exceptions to the law of supply |
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Answer» No, I disagree to this statement. Reasons : There are following exception to law of supply. (i) Labour supply : In case of labour, as the wage rate rises, the supply of labour (number of hours of work) would rise. So the supply curve slopes upwards but the supply of labour decreases with a further rise in the wage rate, this is because the worker would prefer leisure to work after receiving higher amount of wages. Thus, after a certain point when wage rate rises the labour supply tends to fall. (ii) Saving : Normally, when the rate of interest rises, saving increase. But some people want to have fixed regular income by the way of interest. They may save less at a higher rate of interest and savings tend to rise as the rate of interest falls. (iii) Need for cash : If a seller is in urgent need of cash, he will supply a large amount of a commodity even at lower price. (iv) Agricultural goods : The law of supply does not apply to agricultural goods as they are produced once a year and their production depends on climatic conditions. Due to unforeseen changes in weather, if the agriculture production is low, then this supply can't be increased even at a higher price. (v) Future expectations about price : If a seller expects a fall in price in the near future, he will be willing to sell more, even at a lower price. (vi) Rare Articles : Antiques artistic articles are exceptions to the law of supply because a change in price can't change their supply. |
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| 2074. |
Explain with reasons whether you 'agree' or 'disagree' with the statements :There are many types of demands. |
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Answer» Yes, I agree to this statement. Types of Demand : (i) Direct Demand : When a commodity is demanded to satisfy human wants directly, it is direct or conventional demand. For example, the demand for food, clothes have direct demand. Consumer goods have direct demand. (ii) Indirect Demand : Indirect demand is also known as derived demand. When goods are demanded indirectly, i.e., to produce consumer goods, it is indirect demand. For example: the demand for factors of production is indirect demand. (iii) Joint Demand : When two or more goods are demanded jointly to satisfy a single need, it is known as joint demand. For example : to make tea, water, sugar, tea powder, milk etc. is jointly demanded. The demand for complementary goods is joint demand. (iv) Composite Demand : The demand for commodities, having alternative uses i.e. which is used for satisfying several want at a time, is composite demand. For example : the demand for electricity is composite demand. (v) Competitive Demand : Competitive demand is when demand for a commodity competes with its substitutes. For example : tea and coffee have competitive demand. |
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| 2075. |
State and explain J.M. Keynes's ‘psychological law of consumption’. |
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Answer» Keynesian psychological law of consumption explains the relationship between consumption (C) and income (Y). According to J. M. Keynes, "as aggregate income increases, the total consumption expenditure in the economy also increases, but in a proportion less than the increase in the income." As income increases, the individual wants are satisfied to a larger and larger extent. So, when income increases further, people do not consume the entire income. So, they save a part of it. Hence there is bound to be a gap between income and consumption. Thus, according to Keynes, with the increase in income, both consumption and savings increases but consumption increases at a diminishing rate and savings increase at an increasing rate. Explanation of the law : According to keynes as income increase, the individual is able to satisfy more and more wants. However, when the income is increased, the entire income is not spent on consumption instead, people save a part of it which results into a gap b/w income and consumption. |
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| 2076. |
Name any two famous bauxite mines of India. |
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Answer» The main Bauxite mines are Koraput, Katni, Amarkanatak and Bilaspur. |
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| 2077. |
What is a digital divide? |
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Answer» Opportunities emerging from the Information and Communication Technology based development is unevenly distributed across the globe. There are wide ranging economic, political and social differences among countries. While developed countries in general have surged forward, the developing countries have lagged behind and this is known as the digital divide. |
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| 2078. |
What are white collar workers? |
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Answer» Workers who are professionals and work manually are referred as white collar workers. |
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| 2079. |
Who are called red collar workers? |
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Answer» People engaged in primary activities are called Red Collar Workers. |
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| 2080. |
Convert commercial unit of energy into S.I. unit of energy. |
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Answer» Commercial unit of energy = 1 Kwh S.I. unit of energy = 1 Joule 1 Kwh = 1000 × 60 × 60 ws = 3.6 × 106 Joules |
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| 2081. |
Differentiate the Gynmosperm and angiosperm. |
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Answer» Angiosperm are flowering plants in which seeds are found inside the fruits. In gymnosperms seeds are naked. |
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| 2082. |
Why Rutherford used gold foil in above said experiment? |
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Answer» Rutherford choose gold foil because they want a very thin layer. Thickness of gold foil is equal to the thickness of 1000 atom put together. |
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| 2083. |
Which method of hand-printing was developed in China ? |
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Answer» Woodblock printing. |
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| 2084. |
Compute cost of goods sold for the year 2016-2017. With the help of the following information.Stock on 01-April-2015 3,00,000Stock on 31-March-2016 4,00,000Purchases during the year 15,00,000Sales during the year 20,00.000wages 1,20,000 |
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Answer» Cost of goods sold = Opening Stock + Net purchase + Direct Expenses – Closing Stock COGS = 3,00,000 + 15,00,000 + 1,20,000 – 4,00,000 4 = 15,20,000 |
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| 2085. |
Which of the following is a physical change?(A) Evaporation of alcohol (B) Melting of ice(C) Rusting of iron (D) Both (A) & (B) |
| Answer» (D) Both (A) & (B) | |
| 2086. |
If f(x) = 27x3 and g(x) =x1/3 , find gof(x). |
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Answer» Given f(x) = 27x3 and g(x) = x1/ 3 |
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| 2087. |
Briefly discuss the misconceptions about physical education. |
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Answer» Misconceptions About Physical Education: Some people think that physical education is a wastage of time as well as money as it doesn't provide any bright future to their children. Parents feel taking part in games & sports take their children away from their studies. Some have the impression that physical education is a body building. But it is very important that we should unite to eliminate these misconception in order that physical education can be spread as a vast activity. Few of the misconceptions are as under: (i) Rest Period : People think that this is a rest period as it does not have any academic value. This opinion is also wrong as this subject is very demanding in coming time and has academic value. It has its curriculum which involves theory as well as practicals in it. Thus, it is not a rest or free period. Its approach improves the health status at individual and community levels. (ii) Wastage of Money : Games and sports require special type of equipment, apparatus, play field, etc. which are costly. These days many facilities are provided by the government in the form of scholarships, awards and stipends to the sports persons. The government has set up various institutions which provide free education, diet, equipment, etc. to good sportsmen. (iii) Leads to Indiscipline : This opinion is totally wrong. A good sportsman always behaves in a disciplined manner and follows rules and regulations on the sports field and in real life. (iv) No Job Career or Profession : Today special attention is given to sports persons for selection in various competitive examinations. There are many jobs for sports persons in various departments. In many professions sportsmen are accepted happily. (v) Poor Social Status : Participation in physical activities is generally considered to be for those who have poor social status and are not given any recognition by society. Whereas, this trend is now changing. Today there are many sports awards like Arjuna award, Rajiv Gandhi Khel Ratna award, Padma Shree award given to sportsmen, that add to their social status. (vi) Participation in Games only : Many people think that it is participation in games and sports. Whereas, physical education enables a person to maintain health and fitness through physical activity. Games and sports are a good medium to achieve its objectives. |
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| 2088. |
Explain creative efforts as an idea field and also list the ways in which these ideas can be generated. |
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Answer» Creativity is an important and key component of the talents and abilities needed for an entrepreneur for spotting and to harness opportunities. It can also be applied to develop new products and services. There are basically five ways in which creative ideas can be generated: 1. Develop a new product or service. 2. Improve an existing product or service 3. Find a new process or resource for manufacturing a product. 4. Find new markets for existing products or services. 5. Find a new use of an existing product or service. |
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| 2089. |
Given that HCF (306,1314) = 18. Find LCM (306, 1314). |
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Answer» Given, HCF (306, 1314) = 18 LCM (306, 1314) = ? Let a = 306, b = 1,314 We know that a × b = LCM (a, b) × HCF (a, b) ⇒ 306 × 1,314 = LCM (a, b) × 18 ⇒ LCM (a, b) = (306 x 1314)/18 = 22, 338 LCM (306, 1314) = 22,338 |
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| 2090. |
Solutions of two electrolytes ‘A’ and ‘B’ are diluted. The limiting molar conductivity of ‘B’ increases to a smaller extent while that of ‘A’ increases to a much larger extent comparatively. Which of the two is a strong electrolyte? |
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Answer» Electrolyte B is a strong electrolyte. Limiting molar conductivity increases only to a smaller extent for a strong electrolyte, as on dilution the interionic interactions are overcome. Limiting molar conductivity increases to alarger extent for a weak electrolyte, as on dilution the degree of dissociation increases, therefore the number of ions in total volume of solution increases. |
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| 2091. |
Write the structures of A and B in the following: |
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Answer» (i) A : CH3CH2CONH2 B : CH3CH2NH2 (ii) A: CH3CH2CH2NH2 B:CH3CH2CH2OH |
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| 2092. |
Describe the cause of the following variations with respect to lanthanoids and actinoids: (i) Greater range of oxidation states of actinoids as compared to lanthanoids.(ii) Greater actinoid contraction as compared to lanthanoid contraction.(iii) Lower ionisation enthalpy of early actinoids as compared to the early lanthanoids. |
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Answer» (i) 5f, 6d and 7s levels in actinoids are of comparable energies. (ii) This is due to poorer shielding by 5f electrons in actinoids as compared to shielding by 4f electrons in lanthanoids. (iii) In actinoids, 5f electrons are more effectively shielded from the nuclear charge than the 4f electrons of the corresponding lanthanoids. Since the outer electrons are less firmly held, they are available for bonding in the actinoids. |
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| 2093. |
When a chromite ore (A) is fused with an aqueous solution of sodium carbonate in free excess of air, a yellow solution of compound (B) is obtained. This solution is filtered and acidified with sulphuric acid to form compound (C). Compound (C) on treatment with solution of KCl gives orange crystals of compound (D). Write the chemical formulae of compounds A to D. |
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Answer» A = FeCr2O4 B = Na2CrO4 C = Na2Cr2O7 D = K2Cr2O7 |
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| 2094. |
How would you account for the following:(i) The following order of increase in strength of acids:PH3 < H2S < HCI(ii) The oxidising power of oxoacids of chlorine follows the order:HClO4 < HClO3 < HClO2 < HClO |
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Answer» (i) Larger the difference in electronegativity greater will be polarity and hence greater will be acidic character. (ii) As HClO4 is most stable and tendency to give oxygen is least while HClO is least-stable and gives oxygen most easily. |
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| 2095. |
Complete the following chemical equations :(i) K2Cr2O7+ H2SO4+FeSO4 →(ii) K2Cr2O7 + H2SO4 + H2S →(iii) KMnO4 + H2SO4 + H2C2O4 → |
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Answer» (i) K2Cr2O7+ H2SO4+FeSO4 → Cr2(SO4) 3 + 3Fe2(SO4) 3 + K2SO4 + 7H2O (ii) K2Cr2O7 + H2SO4 + H2S → K2SO4 + Cr2(SO4) 3 + 3S + 7H2O (iii) KMnO4 + H2SO4 + H2C2O4 → K2SO4 + 2MnSO4 + 8H2O + 10CO2 |
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| 2096. |
Account for the following/Explain why :(i) Transition metals exhibit variable oxidation states,(ii) Zr (Z = 40) and Hf (Z = 72) have almost identical radii,(iii) Transition metals and their compounds act as a catalyst |
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Answer» (i) In transition elements, the energies of (n – 1) d orbitals and ns orbitals are nearly same. Therefore, electrons from both can participate in bond formation and hence show variable oxidation states. (ii) This is because of filling of 4f orbitals which have poor shielding effect (lanthanoid contraction). (iii) Due to the following reasons : (a) Transition metal form unstable intermediate compounds because of their variable oxidation states and give a new path with lower activation energy for the reaction. (b) They provide large surface area with free valencies on which reactants are adsorbed. |
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| 2097. |
(a) Among ionic species Sc+3, Ce+4 and Eu+2, which one is a good oxidizing agent(b)Complete the following reactions: (i) Cr2O7−2 + Sn+2 + H+ →(ii) MnO4- + Fe+2 + H+ → |
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Answer» (a) Ce+4 (b) (i)Cr2O7−2 + 3Sn+2 +14H+ → 2Cr+3 +3Sn+4 + 7H2O (ii)MnO4- +5Fe+2 + 8H+ → Mn+2 + 5Fe+3 +4H2O |
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| 2098. |
Define fuel cell and write its two advantages. |
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Answer» Cells that convert the energy of combustion of fuels (like hydrogen, methane, methanol, etc.) directly into electrical energy are called fuel cells. Advantages : High efficiency, non polluting |
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| 2099. |
Write the IUPAC name of the following compound' |
| Answer» Hex-4-en-3-ol | |
| 2100. |
Why staggered conformation of ethane is more stable than the eclipsed conformation? |
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Answer» Staggered conformation of ethane is more stable than the eclipsed conformation because in staggered form, the electron clouds of carbon – hydrogen bonds are as far apart as possible. So, there are minimum repulsive forces. |
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