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.

The reason of beta-blockers administration for hypertension treatment is: a) Peripheral vasodilatation b) Diminishing of blood volume c) Decreasing of heart workd) Depression of vasomotor center

Answer»

c) Decreasing of heart work 

2.

What special day is tomorrow?

Answer»

Tomorrow is International Women's Day. 

3.

All of the following statements regarding angiotensin II are true EXCEPT: a) It is a peptide hormone b) It stimulates the secretion of aldosterone c) Angiotensin I is almost as potent as angiotensin II d) It is a potent vasoconstrictor 

Answer»

c) Angiotensin I is almost as potent as angiotensin II 

4.

Tick the diuretic agent having a potent and rapid effect: a) Furosemide b) Spironolactone c) Dichlothiazide d) Indapamide 

Answer»

a) Furosemide

5.

The reason of diuretics administration for hypertension treatment is: a) Block the adrenergic transmission b) Diminishing of blood volume and amount of Na+ ions in the vessels endothelium c) Depression of rennin-angiotensin-aldosterone system d) Depression of the vasomotor center

Answer»

b) Diminishing of blood volume and amount of Na+ ions in the vessels endothelium

6.

All of the following statements regarding vasodilators are true EXCEPT: a) Hydralazine causes tachycardia b) Nifedipine is a dopamine receptor antagonist c) Nitroprusside dilates both arterioles and veins d) Minoxidil can cause hypertrichosis

Answer» b) Nifedipine is a dopamine receptor antagonist
7.

Choose the unwanted effects of clonidine: a) Parkinson’s syndrome b) Sedative and hypnotic effects c) Agranulocytosis and aplastic anemia d) Dry cough and respiratory depression

Answer»

b) Sedative and hypnotic effects 

8.

Define the triplepoint for one component system? chemistry phase rule

Answer»

The point at which the lines representing the boundaries between solid + gas, liquid + gas and solid + liquid phases intersect is the triple point. It is a fixed or invariant point since it is a result of the phase rule that a single component system with three phases has no degrees of freedom.

9.

All of the following statements regarding verapamil are true EXCEPT:a) It blocks L-type calcium channels b) It increases heart rate c) It relaxes coronary artery smooth muscle d) It depresses cardiac contractility  

Answer»

b) It increases heart rate

10.

All of the following statements regarding verapamil are true EXCEPT: a) It blocks L-type calcium channels b) It increases heart rate c) It relaxes coronary artery smooth muscle d) It depresses cardiac contractility

Answer»

b) It increases heart rate

11.

Tick the adverse reactions characteristic for lidocaine: a) Agranulocytosis, leucopenia b) Extrapyramidal disorders c) Hypotension, paresthesias, convulsions d) Bronchospasm, dyspepsia

Answer»

c) Hypotension, paresthesias, convulsions

12.

Verapamil has a significant effect on automaticity in the SA node. It’s:a) True b) False

Answer»

Verapamil has a significant effect on automaticity in the SA node. It’s True.

13.

Verapamil is example of

Answer»

Verapamil is in a class of medications called calcium-channel blockers. It works by relaxing the blood vessels so the heart does not have to pump as hard. It also increases the supply of blood and oxygen to the heart and slows electrical activity in the heart to control the heart rate.

14.

How to bake a chocolate cake?

Answer»

Step 1: Prepare Baking Pans

Step 2: Allow Ingredients to Reach Room Temperature.

Step 3: Preheat the Oven.

Step 4: Stir Together Dry Ingredients.

Step 5: Combine the Butter and Sugar.

Step 6: Add Eggs One at a Time.

Step 7: Alternate Adding Dry and Wet Ingredients.

Step 8: Pour Batter into Pans and Bake

Step 9: Check Cake for Doneness

Step 10: Cool the Cake

Step 11: Assemble the Cake

Step 12: Add the First Coat of Frosting

Step 15: Frost and Decorate

15.

Fill in the blanks with the correct linking words given in brackets: The hope ........... the responsibility for breaking the stalemate rests not only on the money .......... on intellectual resources .............. money is more popular, according to the French proverb, ”Nobody is satisfied with his wealth, everybody is satisfied with his wisdom.” ............, if humanly used, science is their indispensable guardian and caretaker. (though, and, however, but)

Answer»

The hope and the responsibility for breaking the stalemate rests not only on the money but on intellectual resources though money is more popular, according to the French proverb, ”Nobody is satisfied with his wealth, everybody is satisfied with his wisdom.” however, if humanly used, science is their indispensable guardian and caretaker.

16.

Long time ago, why does people stops women to go out from house? Why does people thinks that men have power than women? Why only women have to stay at home? And today's generation also why people don't let women work?

Answer» The reason behind this is that most people think that women aren't capable of doing outside work, or they think that women alone is not independent to do her own work, so they think that women should stay at home rather than going outside. The people think that because generally men are more muscular than women, so they think men have more power than women.  In today's generation because of some unorthodox and conservative beliefs against women, the people don't allow them to work.
17.

Identify the figure given and the part labelled “A”.

Answer»
  • It is a mammalian blastocyst.
  • ‘A’ is trophoblast.
18.

Define in vitro fertilization.

Answer»

In vitro fertilisation refers to the fusion of gametes outside the body in almost similar conditions as that of the body in the laboratory.

19.

What is a monohybrid cross?

Answer»

Monohybrid cross is a cross made between two individuals of a species, considering the inheritance of the contrasting pair of a single character/trait.

20.

Name one respiratory disease that infects the lung alveoli and one that does not infect the lungs.

Answer»

Pneumonia infects lung alveoli. Common cold does not infect the lungs.

21.

A block of mass m slides down an inclined plane which makes an angle `theta` with the horizontal. The coefficient of friction between the block and the plane is `mu`. The force exerted by the block on the plane isA. `mg cos theta`B. `sqrt(mu^(2) + 1) mg cos theta`C. `(mumg cos theta)/(sqrt(mu^(2) + 1))`D. `mumg theta`

Answer» Correct Answer - B
22.

If the base adenine constitutes 30 per cent of an isolated DNA fragment, then what is the expected percentage of the base cytosine in it?

Answer»

20 per cent.

23.

Plates A and B constitute an isolated, charge parallel plate capacitor. The inner surface (I and IV) of A and B have charge +Q and -Q respectively. A third plate C with charge +Q is now introduced midways between A and B. Which of the following statement is not correct? A. The surface I and II will have equal and opposite charges.B. The surfaces III and IV will have equal and oppsite charges.C. The charge of surface III will be greater than Q.D. The potential difference beween A and C will be equal to the potential difference between C and B.

Answer» Correct Answer - B
24.

Plates A and B constitute an isolated, charged parallel-plate capacitor. The inner surfaces (I and IV) of A and B have charges +Q and -Q respectively. A third plate C with charge +Q is now introduced midway between A and B. Which of the following statements is not correct? (a) The surfaces I and II will have equal and opposite charges. (b) The surfaces III and IV will have equal and opposite charges. (c) The charge on surface III will be greater than Q. (d) The potential difference between A and C will be equal to the potential difference between C and B.

Answer»

Correct Answer is: (d)

25.

A square, conducting loop falls from rest in the xy-plane. There is a uniform magnetic field in the z-direction below the x-axis. The velocity v of the loop is plotted against time t. Which of the following best represents the resulting curve?

Answer»

Correct Answer is:  (d)

At every position, the slope of the v–t graph is equal to the acceleration. This will be equal to g, (a) before the coil enters the magnetic field, and (b) after it has entered the field completely. When part of the coil is in the field, the Ampere force will cause an acceleration less than g. Also, during this phase, as v is still increasing, the Ampere force will increase, and hence the acceleration will decrease gradually.

26.

Using properties of determinants, prove that `|(-a^2,ab,ac),(ba,-b^2,bc),(ca,cb,-c^2)|=4a^2 b^2 c^2`

Answer» LHS=
`=[[-a^2,ab,ac],[ba,-b^2,bc],[ca,cb,-c^2]]`
`=abc[[-a,b,c],[a,-b,c],[a,b,-c]]`
`=a^2b^2c^2[[-1,1,1],[1,-1,1],[1,1,-1]]`
`=a^2b^2c^2(2)[[1,-1],[1,1]]`
`=2a^2b^2c^2(1-(-1))`
`4a^2b^2c^2=RHS.
27.

Consider the binary operation `**` on the set `{1, 2, 3, 4, 5}` defined by `a ** b=min. {a, b}`. Write the operation table of the operation `**`.

Answer» operation Table is shown in the video
the binary operation* on the set {1, 2, 3, 4, 5} defined by a * b=min. {a, b}.
28.

Why the core of a transformer is laminated ?

Answer»

The core of a transformer is laminated to reduce the energy loss due to eddy currents. Laminations break the path of eddy currents. The energy loss due to eddy current also results in unnecessary heating of the transformer which may be harmful for the winding of the transformer.

29.

Define the activity of a given radioactive substance. Write its S.I. unit.

Answer»

The total decay rate of a radioactive sample is called the activity of the sample. The S.I. unit of activity is ‘becquerel’. 

30.

Welders wear special goggles or face masks with glass windows to protect their eyes from electromagnetic radiations. Name the radiations and write the range of their wavelength.

Answer»

ultraviolet rays.

The wavelength of UV rays is 400 nm to 1 nm.

31.

A is twice as good a workman as B and he finishes a job in 30 days. In how many days they can do half of the job working together?1. 5 days2. 10 days3. 15 days4. 20 days

Answer» Correct Answer - Option 2 : 10 days

Given:

The efficiency of A = 2 × efficiency of B

Time taken by A to complete the job = 30 days

CONCEPT:

Total work = efficiency × time taken

EXPLANATION:

Let the efficiency of A be 2 unit

So, the efficiency of B = 1 unit

Total work = time taken by A × efficiency of A

⇒ Total work = 30 × 2 = 60 unit

 Time taken by A and B together to complete half the work = 30/(2+1) = 10 days

∴ the answer will be 10 days
32.

Write any two basic properties of charge.

Answer»

1. Like charges repel and unlike charges attract each other. 

2. Electric charge is additive in nature. 

3. The electric charge is conserved. 

4. The electric charge is quantized. 

5. Charges are not affected by the motion of the body.

33.

Two metal spheres of same radius R are placed at a very large distance from each other, and they are connected by a coil of inductance L, as it is shown in the figure. One of the spheres is loaded with electric charge. At what time, after closing the switch S. does the charge on this sphere decreases to half ? A. `(pi)/(2)sqrt(4piepsilon_(0)LR)`B. `(pi)/(4)sqrt(4piepsilon_(0)LR)`C. `(pi)/(2)sqrt(2piepsilon_(0)LR)`D. `(pi)/(4)sqrt(2piepsilon_(0)LR)`

Answer» Correct Answer - C
`C = 2pi epsilon_(0)R`
`T = 2pi sqrtLC = 2pi sqrt(2pi epsilon_(0)RL)`
Required times `= (T)/(4) = (pi)/(2) sqrt(2pi epsilonLR)`
34.

Father of a child is colour blind and mother is carrier for colour blindness, the probability of the child being colour blind is _______. (a) 25% (b) 50% (c) 100% (d) 75%

Answer»

Father of a child is colour blind and mother is carrier for colour blindness, the probability of the child being colour blind is 50%.

35.

A disc of mass m is connected with an ideal spring of spring constant k inside a lift as shown. The left starts moving with constant acceleration `(a hat (i)- a hat (j))`. At the same moment disc starts rolling without sliding on the wall of lift (from rest). If spring is in natural length initially then friction force acting on disc as a function of y is given by : (y is the displacement of the disc with respect to lift) A. `-ky`B. `(2)/(3)(mg + ma-ky)`C. `(1)/(3) (mg +ma-ky)`D. `mg+ma-2ky`

Answer» Correct Answer - C
`((mg + ma - ky)R)/((3)/(2)mR^(2)) = (frR)/((1)/(2)mR^(2))`
`rArr fr = (1)/(3) (mg + ma - ky)`
36.

Interference fringes were produced using light in a doulbe-slit experiment. When a mica sheet of uniform thickness and refractive index 1.6 (relative to air) is placed in the path of light from one of the slits, the central fringe moves through some distance. This distance is equal to the width of 30 interference bands if light of wavelength 4800 is used. The thickness (in `mu m`) of mica isA. 90B. 12C. 14D. 24

Answer» Correct Answer - D
Shift of fringe pattern
`:. (30 D(4800 xx 10^(-10)))/(d) = (0.6) t (D)/(d)`
`30 xx 4800 xx 10^(-10) = 0.6`
`t = (30 xx 4800 xx 10^(-10))/(0.6) = (1.44 xx 10^(-5))/(0.6)`
`= 24 xx 10^(-6)`
37.

In which mode of reproduction variations are seen?(a) Asexual (b) Parthenogenesis (c) Sexual (d) Both a and b

Answer»

Correct Answer is : Sexual

38.

A particle is performing SHM along x-axis such that its acceleration along x-axis is : `a = 2 -x` where a is in `m//s^(2)` and x is in meter. If speed of the particle at x = 1 is zero in INCORRECT statement is :A. time period of oscillation is `pi` secondB. amplitude of oscillation is 1 mC. speed of the particle at `x = 2.5 m` is `(sqrt(3))/(2)` m/sD. speed of particle at x = 3 m is zero

Answer» Correct Answer - A
`a = - [ x - 2]`
mean position `x = 2`, left extreme `x = 1`, right extreme `x = 3`
amplitude `x = 1`
`omega = 1`
`v_("max") = 1, v = omega sqrt(A^(2) - x^(2)) = 1 sqrt(1 - (1)/(2)) = (sqrt3)/(2)`
39.

In Y.D.S.E. if the width of the slits are gradually decreased , then (1) Bright fringe will become brighter and dark fringe become darker (2) Bright fringe become less bright and dark fringe become less dark (3) Bright fringe become brighter and dark fringe become lighter (4 Bright fringe become less bright and dark fringe become darker

Answer»

Answer:(4)

since when you decrease the slit width the intensity of the light will decrease. Hence the bright fringe will become less bright and the dark fringe becomes darker as the intensity reduce the brightness will reduce for the whole system.

40.

How to solve vectors in physics

Answer»
  1. To add vectors, lay the first one on a set of axes with its tail at the origin. ...
  2. To subtract vectors, proceed as if adding the two vectors, but flip the vector to be subtracted across the axes and then join it tail to head as if adding.
  3. Adding or subtracting any number of vectors yields a resultant vector.
41.

Given below are two statements: Statement – I : Susceptibilities of paramagnetic and ferromagnetic substances increase with decrease in temperature. Statement – II: Diamagnetism is a result of orbital motions of electrons developing magnetic moments opposite to the applied magnetic field. Choose the CORRECT answer from the options given below : -(A) Both statement – I and statement -II are true. (B) Both statement – I and Statement – II are false. (C) Statement – I is true but statement – II is false. (D) Statement-I is false but Statement-II is true.

Answer»

(A) Both statement – I and statement -II are true

According to curie's law, magnetic susceptibility is inversely proportional to temperature for a fixed value of external magnetic field i.e. \(\chi\) = C/T.

The same is applicable for ferromagnet & the relation is given as \(\chi=\frac{C}{T-T_C}\)(TC is curie temperature.)

Diamagnetism is due to non-cooperative behaviour of orbiting electrons when exposed to external magnetic field.

42.

A non conducting ring of radius `R_(1)` is charged such that the linear charge density is `lambda_(1)cos^(2)theta` where `theta` is the polar angle. If the radius is increased to `R_(2)` keeping the charge constant, the linear charge density is changed to `lambda_(2)cos^(2)theta`. The relation connecting `R_(1)`, `R_(2)lambda_(1)` and `lambda_(2)` will beA. `lambda_(1)//R_(1)=lambda_(2)//R_(2)`B. `lambda_(1)//R_(2)=lambda_(2)//R_(1)`C. `lambda_(1)lambda_(2)=R_(1)R_(2)`D. `lambda_(1)^(2)R_(1)=lambda_(2)^(2)R_(2)`

Answer» Total charge `Q-int_(0)^(2x)lambdacos^(2)thetaRd theta=pilambdaR`
Hence `pi lambda_(1)R_(1)=pilambda_(2)R_(2)`
`rArr (lambda_(1))/(R_(2))=(lambda_(2))/(R_(1))`
43.

A car starts its journey from the origin with the velocity 20i m/s and moves in x-y plane with acceleration of (2i + 4tj) m/s2. Then the speed of car at t = 2 s will be

Answer» vi is 20 m/s    t is 2 s      

now to find a so draw a right angle triangle taking 2 at base and 4 at perpendicular..by finding hypoteneus which is resultant acceleration which is 4.4

now we have ALL values...putting in equation

Vf=Vi+at

vf =20 + 4.4x 2

vf= 28.2

Given u = 20

a = \(2\hat i+4\hat j\)

|a| = \(\sqrt{4+16}\) 

|a| = \(\sqrt{20}\) 

v = u + at

v = 20 + \(\sqrt{20}\) x 2

v = 20 + 8.82

v = 28.82 m/s

44.

A body starts from rest and covers a distance of \( 10 m \) in first second. The distance covered by it in 4 seconds will be: 1) \( 80 m \) 2) \( 100 m \) 3) \( 160 m \) 4) \( 200 m \)

Answer»

u = 0

s = 10

t = 1

\(\therefore \) s = ut + \(\frac12\)a t2

⇒ 10 = \(\frac12\) x a x 12

⇒ a = 20 m/sec2

Now, 

t = 4

a = 20 

u = 0

 \(\therefore \) s = ut + \(\frac12\)a t2

= 0 + \(\frac12\) x 20 x 16

= 160 m.

Correct option is 3) 160 m

45.

A car is moving on a road with a constant speed of 10m/s. The raindrops are falling towards car with the velocity of 5m/s at an angle 53°with vertical . Find the velocity of raindrops w.r.t car.

Answer» NOTE: tan53°=4/3

tan53°=   velocity of car/velocity of rain

so,

4/3= 10/velocity of rain

velocity of rain = (10×3)/4=30/4

so velocity of rain is 7.5 m/sThe velocity of rain is 7.5 m/s
46.

The length of the wire shown in the figure between the pulleys is 1.5m and its mass is 12.0g. The frequency of vibration with which the wire vibrates in three loops forming antinode at the mid point of the wire is - (Take `g=9.8 m//s^2`) A. 210 HzB. 140 HzC. 70HzD. none of these

Answer» `lambda=1m `
`v=sqrt((9xx9.8xx1.5)/(12xx10^(-3)))=105 m//s`
`f=(105xx1)/1=105 Hz`
47.

A force of `6.4N` streches a vertical spring by `0.1m` The mass that must be supended from the spring so that it oscilation with a time period of `pi//4` secondA. `(pi)/4 kg`B. `4/(pi) kg`C. `1 kg`D. 10 kg

Answer» Correct Answer - C
Spring constant `K= (6.4)/(0.1) =64 N//m`
Now `T=2pisqrt(m/k)` or `pi/4 =2pisqrt(m/64) :. M=1 kg `
48.

The potential on the `Nth` shell due to `N` concentric shells having charges `Q`, `2Q`, `3Q`,……`NQ` and radii `a`, `2a`, `3a`…..`Na` respectively isA. `(Q(N+1))/(8piepsilon_(0)a)`B. `(QN(N+1))/(8piepsilon_(0)a)`C. `(Q)/(2piepsilon_(0)a)`D. none of these

Answer» Correct Answer - D
`V=(1)/(4piepsilon_(0))sum(Q_(i))/(r_(1))`
49.

A solid sphere of radius `R` has a spherical cavity of radius `r` as shown in the figure. If the volume charge density `sigma` is uniformly distributed over the whole volume of the sphere, then electric field strength at the centre of the sphere will be A. `(R^(3)sigma)/(2piepsilon_(0)(R-r)^(2))`B. `(Rsigma)/(3piepsilon_(0))`C. `(1)/(3epsilon_(0))(r^(3)sigma)/((R-r)^(2))`D. `(rsigma)/(3epsilon_(0)(R-r)^(2))`

Answer» `E=(1)/(4piepsilon_(0))((4)/(3)pir^(3)sigma)/((R-r)^(2))`
`=(1)/(3epsilon_(0))(r^(3)sigma)/((R-r)^(2))`
50.

Low frequency signal cannot be transmitted to large distance. Identify incorrect statement (1) It can be transmitted by modulating high frequency signal with it. (2) Antenna size required is very large to directly transmit it(3) power of low-frequency signal gets attenuated part(4) Low frequency signal can be used under space communicate

Answer»

(4) Low frequency signal can be used under space communicate