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.

An object having acceleration of 10 metre second per square starting from rest find distance travelled by an object in 5 seconds

Answer»

Hi friend
--------------
Your answer
----------------------

Acceleration = 10 m/s²

Initial velocity = U = 0 m/s [Because the object is starting from rest .]

TIME = 5 seconds

Distance = s = ?

Now,
---------

Using formula => s = UT + 1/2 × a × t²

=> s = (0 × 5) + 1/2 × 10 × (5)²

=> s = 0 + 5 × 25

=> s = 125 m

HOPE IT HELPS

2.

Determine length width of horn flare angle in pyramidal horn which e-plane aperture is 10 lambda

Answer»

As a RESULT HORN ANTENNAS have WIDER beamwidths when COMPARED to similar-sized plane-wave ..

3.

Why is spoiling of food considered a chemical change?A) In it the food changes from one chemical substance to another B) It is not possible to get original food from spoiled food C) It is a permanent change D) All the above

Answer»

D. All of the above is the CORRECT OPTION

4.

The melting of gold is a physical change becauseA) melted gold is still gold but in different form B) no new substance is formed in it C) on cooling melted gold returns back to its original state D) All the above

Answer»

Because no NEW SUBSTANCE is FORMES

5.

Hi friend solve this question

Answer» HELLO FRIEND.....⭐⭐⭐
F = mv/t
v = s/t = 0.5m/5s = 0.1 m/s
F = 10^(-2) × 0.1 ÷ 10
F = 1/100 × 1/10 × 1/10
F = 1/10000 = 10^(-4) Newton
6.

Consider the following changes and select the option that can be used to classify these. stretching of rubber band cooking of food heating of milk stretching of spring burning of paperA) periodic and non-periodic change B) physical and chemical change C) expansion and contraction D) None of these

Answer»

The CORRECT answer is B PHYSICAL and CHEMICAL change

7.

If Shyam teaches a boy 4hrs and ram teaches a boy 5hrs so who has more work done

Answer»

It DEPENDS on how MUCH they GAIN in LESS TIME or time.

8.

Constructing of houses how does it effect evironment

Answer»

The HOUSE is MADE up of bricks and bricks are baked at high temp. which release large amount of smoke in environment
secondly the labour or workers doing construction also makes the area very messi and unhygienic which also affect the environment
thirdly RICH people want their house BIG so they destroy forest ,trees or animal house for their needs
they also cut huge amount of trees for production of woods

9.

Full explanation on Alluvial soil

Answer» ALLUVIAL soil is the soil which is FOUND in the EASTERN coastal PLAINS of India.
10.

Physical changes are usuallyA) periodic changes B) a change in state of matter C) fast changes D) a change in composition

Answer»

Physical changes are changed in the STATE of matter.
For : melting of ice. ice is in SOLID state, it MELTS to BECOME WATER which is liquid in state.

11.

Which of the following is a chemical change to a piece of paper?A) Colouring B) Burning C) Folding D) Tearing

Answer»

Here is your ANSWER :
B) BURNING

12.

During which of the following changes a new substance is formed?A) Cooking B) Melting C) Freezing D) Crushing

Answer»

During cooking
it will CHANGE into a NEW SUBSTANCE

13.

Choose the correct alternative to complete the given analogy. Change in period in a school: Periodic change::________: Non periodic changeA) Heart beating B) Formation of day and night C) Forest fire D) Change in phases of moon

Answer» FOREST FIRE : non period change.

Mostly unpredictable incidents come under non periodic change.we cannot predict forest fire so it is non periodic. More over it won't happen at regular interval of time.So it is non periodic change.
14.

Q. Two Identical coins having similar charges are placed 4.5 m apart on a table. Force of repulsion between them is 49/9 N. The value of charge on each coin is :-1) 100 mC2) 200 mC3) 300 mC4) 35√10 C

Answer» LET charge on each COIN is q

GIVEN, Force = 49/9 N
Speration between charges , r = 4.5m

∵ Force = KQq/r² [ from Coulombs law]
∴ 49/9 = 9 × 10⁹ × q × q/(4.5)²
⇒ 49/9 = 9 × 10⁹ × q²/(4.5)²
⇒ 49 × (4.5)² × 10⁻⁹/9 × 9 = q²
⇒(7)² × (4.5)² × 10 × 10⁻¹⁰/(9)² = q²
Taking square root both sides,
⇒ 7 × 4.5 × √10/9 × 10⁻⁵ = q
⇒ 3.5√10 × 10⁻⁵ = q
⇒ 35√10 × 10⁻⁶ = q

Hence, charge on each coin is 35√10 μC
It seems you did mistake in typing.
Answer should be 35√10 μC , CORRECT Option is (4) 35√10 μC
15.

According to bis classification the range of silt sized particles is

Answer»

Hey MATE here's your ANSWER.....

According to his CLASSIFICATION the range of silt sized particles is 0.075 mm to 0.002.mm.

Hope it helps ☺️

16.

According to the base method of measurement the order of the sequence is

Answer» PLZ GIVE the MEASUREMENT
17.

What are the calorific value of petrol,diesel,biogas,butane,methane,ethanol,kerosene,cow dung cake,coal,wood and LPG in kj/kg?

Answer»

Here it can HELP you to FIND the ANSWER

18.

Which is an example of chemical change?A) Water freezes B) Wood is cut C) Bread is baked D) Wire is bent

Answer»

A) REVERSIBLE
B) IRREVERSIBLE
C) irreversible
d) reversible

19.

Artificial ripening of fruit is aA) reversible change B) periodic change C) irreversible change D) fast change

Answer»

D) FAST CHANGE is the ANSWER....

20.

Find the odd one out.A) crushing B) pulling C) burning D) tearing

Answer»

Hey...
The ANSWER is C. Burning as it is a chemical change. CRUSHING, pulling and tearing are physical changes
Hope it will HELP you...

21.

2 and 4 plssss ansssssssss

Answer»

This is the answer
i have TOOK MAGNITUDE of VECTOR A EQUAL to 'A'

22.

What is the metal used in the fuse

Answer»

Silver PLATED COPPER is ALSO COMMONLY used..

23.

Point charges 30C, - 20C, and 10C are located at (-1,0,2),(0,0,0) and (1,5,-1) respectively. The total electric flux leaving cube of side 6 m centered at the origin is

Answer»

The Cube is centered at the Origin(0,0,0) so,

You can infer that the CHARGES present INSIDE the Cube are:-
1. 30 C charge (-1,0,2)
2. -20 C charge (0,0,0)

Now, According to Gauss's Law,

Electric Flux = Charged ENCLOSED WITHIN the Surface/ ε₀

=> Flux = (30- 20)/
ε₀
=> Flux = 10/
(8.85 ×10^-12)
=> Flux = 1.12×10^12



24.

Carnot engine efficiency can be increased more effectively by

Answer»

By the PRESENCE of SINK and IDEAL GAS

25.

Which of the following is an example of chemical change?A) Filling up a balloon with hot air. B) Taking a glass of water and freezing it by placing it in the freezer. C) A plant collecting sunlight and turning it into food. D) None of these

Answer» HEY...
The CORRECT ANSWER is C
26.

Is it Snell law and law of refraction are same please explain me

Answer»

For REFRACTION of light,RATIO of sin i/sin R is constant for a pair of MEDIUM,which is law of refraction as well as Snell law.

27.

Q. Two Identical coins having similar charges are placed 4.5 m apart on a table. Force of repulsion between them is 49/9 N. The value of charge on each coin is :-1) 100 mC2) 200 mC3) 300 mC4) 35√10 C[Explain properly with a solution]Plzz answer it aand fast

Answer»

Let CHARGE on each coin is Q

Given, Force = 49/9 N
Speration between charges , r = 4.5m

∵ Force = KQq/r² [ from COULOMBS law]
∴ 49/9 = 9 × 10⁹ × q × q/(4.5)²
⇒ 49/9 = 9 × 10⁹ × q²/(4.5)²
⇒ 49 × (4.5)² × 10⁻⁹/9 × 9 = q²
⇒(7)² × (4.5)² × 10 × 10⁻¹⁰/(9)² = q²
Taking square root both sides,
⇒ 7 × 4.5 × √10/9 × 10⁻⁵ = q
⇒ 3.5√10 × 10⁻⁵ = q
⇒ 35√10 × 10⁻⁶ = q

Hence, charge on each coin is 35√10 μC
It SEEMS you did mistake in typing.
Answer should be 35√10 μC , Correct Option is (4) 35√10 μC

28.

Calculate the electric field strength required just to support a water drop of mass 10^7kg and having a charge 1.6*x10^-19c

Answer»

Let q = 1.6 x 10-19 C and m = 1 x 10-7 kg . Also g = 10 m/s2 .
To just BALANCE the drop , we need EQ = mg  [ E - ELECTRIC field strength ]
so E = mg/q = 10-7 x 10/1.6 x 10-19     = 6.25 x 1012 N/C
Hope that helps.

29.

What happens to the metals on heating:A) They expand B) They contract C) They remains unaffected D) None of these

Answer»

Heya,

The ANSWER of your QUESTION is OPTION A.

The reason behind this is that the molecules of a metal gain energy and move APART from each other and this leads to the expanding of that metal.

•Hope it helps•

30.

How can we find the sum of forces if they are perpendicular to each other?

Answer»

Use the formula F1^2+F2^2+2F1F2costheta
[TEX] \sqrt{f1 { + f2 { + 2f1f2 \COS(theta) }

31.

What isnormal reaction force?

Answer»

The normal REACTION forceThe sum of forces in the body equals the external force acted on it. ... The force on the body due to GRAVITY causes it to exert a force on the ground and the normal reaction acts in the OPPOSITE direction causing the RESULTANT force on the body to be zero.

32.

30bulbs connected in series if one bulb is fused what is the amount of light

Answer»

No BULB will GLOW...as TGE CONNECTION was in SERIES

33.

Bullet from a gun is which type of energy

Answer»

Heyyy
When a bullet is FIRED out of a gun ....it moves DUE to VELOCITY....hence it POSSESSES kinetic ENERGY

34.

By which chatacterization technique we determine the particle size in nanotechnolgy

Answer»

Hffhutdcjkofdrhjgjitdfv766666

35.

I don't understand this problem can anyone help me

Answer»

This is an EXAMPLE for conversion of one FORM of UNIT into another

36.

Choose the correct alternative to complete the given analogy. Physical change : Boiling : : Chemical change: _________A) Melting B) Burning C) Condensing D) Evaporating

Answer»

Hey there !!..

The change which can't be reverse by reversing the condition are said to be chemical change so.....

ACCORDING to ur QUESTION..all CHANGES can be reverse expet that one :- burning..

so chemical change : burning ...

____________________________

Hope it's will help u

37.

What is difference between making of furniture from wood and burning of wood?A) First is irreversible and second is reversible change B) First is physical and second is chemical change C) First is fast and second is slow change D) First is periodic and second is non-periodic change

Answer»

IT IS A BCOZ SEE
FIRST IS REVERSIBLE CHANGE ND SECOND IS IREVERSIBLE CHANGE .
MARK AS A BRAINLIST
HOPE IT HELPS U

38.

Which of the following is a reversible change?A) Ripening of the fruit B) Melting of ice C) Burning of paper D) Converting wood into saw dust

Answer» MELTING of ICE I HOPE it HELPS you
39.

A train of length l moves with a constant speed v.a person at the back of the train fires a bullet at time t=0 towards a target which is at a distance of d from the front of the train ( on the same direction of the motion ) another person at yhe front of the train fires another bullet at time t=t towards the same target .both bullets reach the target at the same time .assuming the speed if the bullet is same.what is thwe length of the train?

Answer»

We may ASSUME that, when the person at the front of the TRAIN FIRES the bullet

the bullet FIRED by the person at the REAR end has just reached this men

therefore;

using concept of relative velocity

T=(lengthof the train)/(Vb-Vt)

40.

A stone dropped from top of tower of height 300 m high splashes into water off. near base of our when is the splash pad at the top given speed of sound in air is 340 m per second

Answer»

Height of the tower, s = 300 m
Initial velocity of the stone, u = 0
Acceleration, a = G = 9.8 m/s2
Speed of sound in air = 340 m/s
The time (t1) TAKEN by the stone to strike the water in the pond can be calculated using the second equation of motion, as:
s = ut1 + 1/2 gt12
300 = 0 + 1/2 × 9.8 × t12
∴ t1 = √300 × 2/9.8  = 7.82 s
Time taken by the sound to reach the TOP of the tower, t2 = 300/340 = 0.88 s
Therefore, the time after which splash is HEARD,  t = t1 + t2
= 7.82 + 0.88 = 8.7 s.

41.

Condensation is a physical change, why?A) Vapour turns into liquid B) No heat is required C) It happens automatically D) No new substance is formed

Answer» Hey mate !!

Here's the ANSWER !!

Condensation is a physical CHANGE. This is because of the following reasons:

1. No new products are formed. Only change of state happens.

2. It is a reversible change.

3. Products are formed are same as the reactants.

Hence OPTIONS ( a ) and ( d ) are correct. To be more precise ( d ) is correct.

Hope my answer helped you !!

Cheers !!
42.

Cooking of an egg in boiling water containing salt is aA) permanent change B) temporary change C) irreversible change D) Both (a) and (c)

Answer»

I THINK so its option d because that can't be reversed and ALSO it's a PERMANENT change

43.

a truck running along a straight line increases its speed uniformly from 30m/s to 60m/s over a time interval 1 min . what is the distance travelled during this interval?

Answer»

V=60m/s
u=30m/s
t=1 min = 60 seconds
To find DISTANCE TRAVELLED (s)
Since v=u+a×t
So 60=30+a×60
60-30=60 a
30=60 a
30÷60=a
0.5=a
a=0.5m/s square

Now, s=ut+1/2a×t×t
s=30×60+1/2×0.5×60×60
s=1800+1/2×0.5×3600
s=1800+0.5×1800
s=1800+900
s=2700 m
s=2.7 KM (1km=1000m)
Hence the TRUCK travelled 2.7km in that TIME interval.

44.

Integration of dx/(a^2-b^2)^1/2

Answer» 0
45.

A round steel bar of overall length 40cm consists of two equal portion of 20cm each habing

Answer»

That's your ANSWER.......

46.

Area wise which is the smallest and which is the largest steel state

Answer» MEANS WHT is ur QUE PLZ ask agi.n
47.

Heating of wax in a pan is aA) reversible change B) irreversible change C) permanent change D) None of these

Answer» HEATING wax in a PAN is a reversible change.


    HOPE this helps U...
48.

Select the one that represents a periodic change.A) Occurrence of tides B) Opening of a morning glory flower C) Both the above D) None of these

Answer»

B) Opening of a morning glory FLOWER. is the ANSWER......

49.

Which type of change takes place when a rolled roti is baked on taw a?A) physical change B) permanent change C) periodic change D) None of these

Answer» PERMANENT CHANGE....
50.

A car moving with a velocity of 20 m per second. the brakes are applied to retrd it's at the rate of 2 metre per second square.what will be its velocity after 5 seconds of applying thebreaks.( with process please )

Answer»

We have,
U (INITIAL velocity) = 20m/s

a (deceleration or retardation) = -2m/s². [when retardation or deceleration is given the acceleration goes to negative)

t (time) = 5sec

So,
v=u+at
v = 20+(-2*5)
v=20+(-10)
v=20-10
v=10m/s


Hope it HELPS!