Explore topic-wise InterviewSolutions in Current Affairs.

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.

632 g of sodium thiosulphate `(Na_2S_2O_3)` reacts with copper sulphate to form cupric thiosulphate which is reduced sodium thiosulphate to give cupros compound which is dissolved in excess of sodium thiosulphate to form a complex compound sodium cuprothiosulphate `(Na_4[Cu_6(S_2O_3)_5])`. `CuSO_4+Na_2S_2O_3toCuS_2O_3+Na_2SO_4` `2CuS_2O_3+Na_2S_2O_3toCu_2S_2O_3+Na_2S_4O_6` `3Cu_2S_2O_3+2Na_2S_2O_3to underset("Sodium cuprothiosulphate")(Na_4[Cu_6(S_2O_3)_5])` In this process, 0.2 moles of sodium cuprothiosulphate is formed. `(O=16, Na=23, S=32)` The average oxidation states of sulphur in `Na_2S_2O_3 and Na_2S_4O_6` are respectively.A. `+5 & +2`B. `+2 & +2.5`C. `+5 & 2.5`D. `+2 & +4`

Answer» Correct Answer - B
Suppose oxidation number of sulphur in `Na_2S_2O_3` is x
`2+2x+3(-2)=0`
or 2x=6-2
or 2x=4
x=+2
Suppose oxidation number of sulphur in `Na_2S_4O_6` is y
2+4y+3(-2)=0
or 4y =12-2
or 4y=10
y=+2.5
2.

How many models of movement of materials through the Golgi complex exist?(a) 1(b) 2(c) 3(d) 4

Answer» The correct choice is (b) 2

The explanation is: There two models with contrasting views on the movement of materials through the Golgi complex namely  “Cisternal maturation model” and “Vesicular transport model”.
3.

Assertion: Among `Br^(-)`, `O_(2)^(2-)`, `H^(-)` and `NO_(3)^(-)`, the ions that cannot act as oxidising agents are `Br^(-)` and `H^(-)`. Reason: `Br^(-)` and `H^(-)` cannot be reduced.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1C. Statement-1 is True, Statement-2 is False.D. Statement-1 is False, Statement-2 is True.

Answer» Correct Answer - A
`Br^(-)` and `H^(-)` are already in min oxidation state. So they cannot be further reduced and cannot act as oxidising agent.
4.

In plant cells, by-products of the metabolic pathways are stored in _____________(a) vacuole(b) mitochondrion(c) chloroplast(d) nucleus

Answer» The correct choice is (a) vacuole

To explain I would say: Vacuoles store many toxic compounds of the cell including by-products of metabolic pathways. Unlike animal cells, plant cells isolate the toxic by-products (by storing them in the vacuole) from the rest of the cell rather than discharging them.
5.

Ceruloplasmin shows the activity (A) As ferroxidase (B) As reductase (C) As ligase (D) As transferase 

Answer»

(A) As ferroxidase

6.

Give the equation of half-life of radioactive element.

Answer» Radioactive decay is first order reaction so half life =0.693/k

Half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive material to decrease by one-half.

7.

Define: Strain Energy. Write the formula to calculate (i) the strain energy due to axial loads (tension)

Answer»

Strain energy is defined as the energy stored in a body due to deformation. The strain energy per unit volume is known as strain energy density and the area under the stress-strain curve towards the point of deformation. When the applied force is released, the whole system returns to its original shape. It is usually denoted by U.

The strain energy formula is given as,

U = Fδ / 2

Where,

δ = compression,

F = force applied.

8.

Given the characteristic equation,a(s) = S6 + 4S5 + 3S4 + 2S3 + S + 4S + 4Is the system described by this characteristic equation stable?

Answer»

• All the coefficients are positive and nonzero 

• Therefore, the system satisfies the necessary condition for stability 

• We should determine whether any of the coefficients of the first column of the Routh array are negative

S6 :    1     3    1     4 

S5 :    4     2    4    0 

S4 :    2.5    0    4 

S3 :    2    ‐2.4   0 

S2 :    3     4        

S1 :   ‐1.6    0 

S0 :    4

The elements of the 1st column are not all positive. Then the system is unstable.

9.

ii) \( CH _{3} COONa + NaOH \underset{\Delta}{\stackrel{ CaO }{\longrightarrow}} \)

Answer»

COONa+NaOH ----Cao---->  CH4 +Na2CO3 


10.

In an ammeter `5%` of the total current is passing through the galvanometer of resistance `G`. The resistance of shunt (`S`) required will beA. `19G`B. `G//19`C. `20G`D. `G//20`

Answer» Correct Answer - B
`(i_(g))/(i)=(S)/(G+S)`
11.

The capacity of a parallel plate air capacitor is `2 mu F` and voltage beteen the plates is changing at the rate of 3 v/s the displacement current in the capacitor isA. `2 muA`B. `3 mu A`C. `5 muA`D. `6 muA`

Answer» Correct Answer - a
The displacement current can be found as displacement current = conduction current
`I_(d) =(d)/(dt)CV=c(d)/(dt)V`
`I_(D)=2xx10^(-6)xxx3=6muA`
12.

The maximum current in a galvanometer can be 10 mA. Its resistance is `10 Omega`. To convert it into an ammeter of 1 A, what resistance should be connected in parallel with galvanometer (in `10^(-1)Omega)`?

Answer» Correct Answer - A
`I_(G) = 10mA, G = 10Omega`
`S(I-I_(G)) = I_(G)G` where S is hunt in parallel , solve to get `S = 0.1 Omega`.
13.

A range of galvanometer is V when `50 Omega` resistance is connected is connected in series its range gets doubled when `500 Omega` resistance is connected in series galvanometer resistance isA. `100 omega`B. `200 omega`C. `300 omega`D. `400 omega`

Answer» Correct Answer - b
A galvanometer is converted into a voltmeter when ahigh resistance is connected to it in series
If I is maximum current flowing through galvanometer then
`V= (R+G)I=(50+G)I`
where V is the range of galvanometer when R= 50 `omega` is connected in series with it and g is galvanometer resistance
when 500 `omega` resistnce is conncected in series the range becomes double
`2V=(500 +G)I`
or `500 +G =100 +2G rarr G= 400 omega`
14.

The value of x for which `f(x)=(sin.({x})/({x})+cos.({x})/({x}))` is maximum ({x} and [x] denots fractiona part and greatest integer part of x respectively)A. `1+(pi)/(4)`B. `2+(pi)/(4)`C. `1-(pi)/(4)`D. none of these

Answer» Correct Answer - A
Let `({x})/([x])=alpha`
`rArrf(x)= sin alpha + cos alpha`
`" " =sqrt(2)(sin((pi)/(4)+alpha))`
f(x) is maximum at `alpha(pi)/(4)`
`:. ({x})/([x])=(pi)/(4)`
`rArr {x}=(pi)/(4)[x]`
is true at [x]=1
`:. {x}=(pi)/(4)`
So `x=[x]+{x}=1+(pi)/(4)`
15.

In a circuit shown in figure if the internal resistance of the sources are negligible then at what value of resistance `R` will the thermal power generated in it be the maximum. What is its value in ohms ?

Answer» Equivalent emf of the circuit across, `AB` is given by
`E_(eq)(2)/(3) xx 4V`
Equivalnet resistance `rArr (1)/(r_(eq))=(1)/(3)+(1)/(6)rArrr_(eq)=2Omega`
Now, we have
Current `I=(10-4)/(2+R)=(6)/(2+R)`
`:. ` Power dissipated in R
`P=i^(2)R=(36R)/((2+R)^(2))`
for `P` to be maximum.
`(dP)/(dR)=36[((2+R)^(2)-R(2)(2+R))/((2+R)^(2))]=0`
`R=2Omega`
16.

Two circular rings each of radius `a` are joined together such that their planes are perpendicular to each other as shown in the figure. The resistance of each half part of the ring is indicated. A very small loop of mass `m` and radius `r` carrying a current `I_(0)` is placed in the plane of the paper at the common centre of each ring. The loop can freely rotate about any of its diametric axes. If the loop is slightly dispalced, find the time period of its oscillations. (Given `ma=(2pimu_(0)I_(0))/(pi^(2))`

Answer» The equivalent resistance of the circuit is
`(1)/(R_(eq))=3+(1)/(2)`
`rArr R_(eq)=(2)/(7)Omega`
`:. I=`total current `=(E)/(R_(eq))=7"amp"`.
The magnetic field at the centre of the loop is
`B=(mu_(0)(2))/(4a)+(mu_(0)(2))/(4a)-(mu_(0)(2))/(4a)-(mu_(0)(I))/(4a)`
`rArr B=(mu_(0))/(4a)` (inward)
The magnetic moments of the tiny ring is `M=I_(0)A=piI_(0)r^(2)`
If the ring is rotated through angle `theta`, then restoring torque is
`tau=-MB sintheta= -piI_(0)r^(2)(mu_(0))/(4a)theta` (for small angle)
Using `II`nd law of motion
`tau=(mr^(2))/(2)(d^(2)theta)/(dt^(2))= -piI_(0)r^(2)(mu_(0))/(4a)theta`
`:. T=2pisqrt((2ma)/(pimu_(0)I_(0))`
17.

A block `A` of mass `M` kept on a rough horizontal surface is connected to a dielectric slab of mass `M//6` and dielectric constant `k` by means of a light and inextensible string passing over a fixed pulley as shown in the figure. The dielectric can completely fill the space between the parallel plate capacitor of plate area `l xx l` and separation between the plates `d` kept in vertical position. Initially switch `S` is open and length of the dielectric inside the capacitor is `b`. The coefficient of friction between the block `A` and the surface is `mu=1//4`. Igonore any other friction. (Given `(Mgd)/(epsilon_(0)l(k-1))=24`.) Find the minimum value of the emf `= V` of the battery so that after closing the switch the block `A` will move.

Answer» `(a) F_(e)+mg ge mumg`
`F_(e) ge (M)/(4)-(M)/(6)g`
`(1)/(2)(epsilon_(0)l)/(d)(k-1)V^(2) ge (Mg)/(12)`
`:. V_(min)=sqrt((Mg)/(12)xx(2d)/(epsilon_(0)l(k-1)))=sqrt((Mgd)/(6epsilon_(0)l(k-1)))`
18.

The capacitor `C_(1)` in the figure initially carries a charge `q_(0)`. When the switch `S_(1)` and `S_(2)` are shut, capacitor `C_(1)` is connected in series to a resistor `R` and a second capacitor `C_(2)`, which initially does not carry any charge. If the heat lost in the resistor after a long time of closing the switch is `(q_(0)^(2)C_(2))/(kC_(1)(C_(1)+C_(2)))`, then Find the value of `k`.

Answer» Electrostatic energy at `t=0` is
`U(0)=(q_(0)^(2))/(2C_(1))`
Final energy `=U(oo)=(q_(0)^(2))/(2(C_(1)+C_(2)))`
`DeltaU=U(0)-U(oo)=(q_(0)^(2)C_(2))/(2C_(1)(C_(1)+C_(2)))`
19.

Three infinitely long wires, each carrying a current 1A, are placed such that one end of each wire is at the origin, and, one of these wires is along x-axis, the other along y-axis and the third along z-axis. Magnetic induction at point (-2 m, 0, 0) due to the system of these wires can be expressed as A. `(mu_(0))/(4 pi)(hat(j)+hat(k))`B. `(mu_(0))/(4 pi)(hat(j)-hat(k))`C. `(mu_(0))/(8 pi)(-hat(j)+hat(k))`D. `(mu_(0))/(8 pi)(hat(j)+hat(k))`

Answer» Correct Answer - C
The magnetic field due to wire placed along x-axis will be zero. The point under consideration is semifinte position of the wire placed along y-axis and z-axis.
Magnetic field due to wire placed along y-axis `vec(B_y)=(mu_(0)I)/(4 pi r)(hat k)`
Magnetic field due to wire placed along z-axis `vec(B_z)=(muI)/(4 pi r)(hat (-j))`
Hence net magnetic field `vec(B)=(mu_(0)I)/(2 pi r)(hat(k)-hat(j))`
After substituting the values we get
`vec(B) =(mu_(0))/(8 pi)(hat(k)-hat(j))T`.
20.

Which of the following correctly represent the equivalent conductivity `(^^_(N))` and molar conductivity `(^^_(M))` of aluminium sulphate where equivalent conductivities of `Al^(+3)` and `SO_(4)^(-2)` are `lamda_(1)` and `lamda_(2)` respectively?A. .^^_(N)=lamda_(1)+lamda_(2)`B. .^^_(M)=3lamda_(1)+2lamda_(2)`C. .^^_(N)=(lamda_(1))/(3)+(lamda_(2))/(2)`D. .^^_(M)=6lamda_(1)+6lamda_(2)`

Answer» Correct Answer - A::D
21.

The colored liquid inside of a pen is called ______

Answer»

Correct option is ink

22.

Something used in a band that makes sound is called an ______

Answer»

Correct option is instrument

23.

A small moving thing which has six legs and either crawls, jumps, walks or flies is called an ______

Answer»

Correct option is insect

24.

Green revolution is related with-(a) Sugar production(b) Vegetable prodction(c) Energy production(d) Food production. 

Answer»

Green revolution is related with  Food production

25.

Explain ‘Internship training’ and ‘vestibule training’ and classify them as on-the-job and off-the-job methods of training.

Answer»

Internship training- Is a joint programme of training in which educational institutions and business firms cooperate. Selected candidates carry on regular studies for the prescribed period.

Internship training can be classified as On-the-job method of training.

Vestibule training- Employees learn their jobs on the equipment they will be using, but the training is conducted away from the actual work floor. Actual work environments are created in a class room and employees use the same material, files and equipment.

Vestibule training can be classified as off-the-job method of training.

26.

What was the extent of India according to Vishnupurana

Answer»

According to Vishnupurana, the extent of India was the present Afghanistan, Pakistan, Nepal, Bhutan, Myanmar, Bangladesh and Srilanka. Reference to this Indian sub-continent is found in Vishnupurana.

27.

Learning management system

Answer»

A learning management system (LMS) is a software application or web-based technology used to plan, implement and assess a specific learning process. Typically, a learning management system provides an instructor with a way to create and deliver content, monitor student participation and assess student performance.

28.

Explain the treatment of goodwill as per AS26.

Answer»

Goodwill is recorded in the books only when some consideration in money or money's worth has been paid for it. In the case of admission, retirement, death or change in profit sharing ratio among existing partners, Goodwill Account cannot be raised as no consideration is paid for it.

29.

Technological scanning refers to

Answer» Technology scanning refers to the process of identifying technologies in the external business environment.
30.

Discuss three B2C marketing strategies.

Answer»

Marketing campaigns: publicity always helps to reach the target market in terms of awareness of the characteristics and the USP of the products. Successful marketing campaigns also arise some jobs marketing B2C, as a representative of the company that goes directly to the potential consumers and gives to know the products/services offered by the company. This is mainly done in the B2C marketing offline.

Online advertising strategies: strategies of advertising online such as PPC and Podcast are some of the sources more effective and efficient advertising online in various search engines. Other strategies like social marketing, channel marketing etc. are also useful to generate awareness amongst buyers about the respective brands.

31.

With reference to LEAP and ARPIT, consider the following statements I. Annual Refresher Programme in Teaching (ARPIT) is a major and unique initiative of online professional development of 15 lakh higher education faculty. II. The Leadership for Academicians Programme (LEAP) is a two weeks flagship leaderships development training programme for academic functionaries. Which of the statements given above is/are correct ?A. 1 OnlyB. 2 OnlyC. Both 1 and 2D. Neither 1 nor 2

Answer» Correct Answer - A
LEAP is a three weeks (2 weeks domestic and one week foreign training ) flagship leadership development training programme for second level academic functionaries in public funded higher education institutions.
32.

Explain any two advantages of using multimedia files on web pages

Answer»

Two advantages are :

Greater Immersion: Adding multimedia elements to a Web page make it easier to draw in viewers. While video is the most popular multimedia addition,

Enhanced Page Rankings for SEO: it has been observed that websites with videos are many times more likely than text-based websites.

33.

Meetings are organized from time to time in each organization. Prepare notice and agenda for an organization based on a fictional character

Answer»

Indian Oil Limited 

24, Connaught Place, New Delhi-110001

Date : 28th November 2021

NOTICE

It is informed to all that the annual meeting of Indian Oil Limited will be held on 29th November, 2021 i.e. Monday at 3:30 PM in Shah Auditorium, Delhi – 110006. You all are cordially invited.

Secretary

AGENDA

Serial No.ProgrammeTiming
1.Confirmation of the minutes of the last meeting.3:15 PM
2.Declare apologies from Directors3:30 PM
3.Deciding pricing strategy of gas and petrol.3:45 PM
4.Confirmation of appointment of Environmental auditors4:00 PM
5.Annual Report’s presentation and distribution4:15 PM
6.Deciding date of next meeting.5:00 PM
34.

Sunil has written following code to store subjects in an array and display the total number of subjects in the array. His code is not running properly. Identify and underline the syntax errors in the following code and write the corrected code: function countsubs() { Var Subject = [“Eng” , “Math”, “Science” , “Hindi”];Document.write (subject.length)}

Answer»

function countsubs() 

var Subject = [“Eng” , “Math”, “Science” , “Hindi”];

document.write(Subject.length); 

}

35.

Give one online website of B2C (Business to Consumer) segment.

Answer»

One online website of B2C(Business to Consumer) segment is Pepperfry.

36.

________ method of a String Class returns true if the length of this string is 0 i. indexAt() ii. length() iii. isEmpty() iv. indexOf()

Answer»

iii. isEmpty()

isEmpty() method of a String Class returns true if the length of this string is 0.

37.

What are member methods?

Answer»

Methods declared in a class are member methods.

38.

_______ Constraint is used to restrict the values of an attribute within a range.

Answer»

Check Constraint is used to restrict the values of an attribute within a range.

39.

______ constraint is used to restrict the values of an attribute within a range.

Answer»

Check constraint is used to restrict the values of an attribute within a range.

40.

Define Data Redundancy.

Answer»

Same information is stored in more than one file which result in wastage of space.

Data redundancy can be found in a database, which is an organized collection of structured data that’s stored by a computer system or the cloud.

41.

DEITY stands for: a. Department of Electrical and Information Technology b. Department of Electronics and Information Technology c. Department of Electronics and Informatics Technology d. Department of Electrical and Informatics Technology

Answer»

Correct option: b. Department of Electronics and Information Technology

42.

________is a collection of raw facts which have not been processed to reveal useful information.

Answer»

Data is a collection of raw facts which have not been processed to reveal useful information.

43.

Sagun is creating a table SALESMAN with fields Salesman number, Name, Total Sales. She doesn’t want the Total Sales column to be remain unfilled i.e. she wants to make entry in this field mandatory. Which constraint she should use at the time of creating SALESMAN table: a. Check b. Default c. Not null d. Primary key

Answer»

Correct option: c. Not null

44.

________ method test whether this string end with the given suffix

Answer»

endsWith method test whether this string end with the given suffix.

45.

Which SQL keyword is used to display the data based on certain pattern?a. LIKE b. IN c. BETWEEN d. RANGE

Answer»

Correct option: a. LIKE

46.

Which SQL keyword is used to sort the result? a) ORDER BY b) SORT c) ORDER d) SORT BY

Answer»

a) ORDER BY

ORDER BY SQL keyword is used to sort the result.

47.

Match suitably.ABEgovernanceBasic education about internet technologyLokpalUse of electronic technology in administrationE-literacyHear cases of corruption at state levelLokayuktaComplaints in banking sectorOmbudsmanConstituted to prevent corruption at national level

Answer»
AB
EgovernanceUse of electronic technology in administration
LokpalConstituted to prevent corruption at national level
E-literacyBasic education about internet technology
LokayuktaHear cases of corruption at state level
OmbudsmanComplaints in banking sector
48.

Which of the following is an invalid variable declaration? a) my_string_1 b) 1st_string c) my string 1 d) _mystring1

Answer»

b 1st_string

1st_string is an invalid variable declaration.

49.

______ commands deletes the tuples from a Table i. Drop ii. Delete iii. Modify iv. None of the above

Answer»

ii. Delete

Delete commands deletes the tuples from a Table.

50.

Which of the following is not an example of eGovernance a. To file property tax b. To apply for renewal of Passport c. To start an online coding course for 3 months d. To get Voters ID card issued

Answer»

c. To start an online coding course for 3 months

To start an online coding course for 3 months is not an example of eGovernance.