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.

Convert 10^@C in degree farhenheit

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Solution : From `""^@F = 9/5C +32`
`""^@F = 9/5 XX 10 + 32`
` F = 18 +32 = 50`
Thus `10^@C = 50^@F`
Discussion
2.

Plough which is made up of iron of steel plates is called __________ plough

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Solution :A PLOUGH which is made up of IRON or steel PLATES is called improvised plough
Discussion
3.

Which of the following is the symbol of a battery ?

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ANSWER :B
Discussion
4.

Choose the correct statement: When the same current (i) flows through two circuits as shown in the figures then(assume that all bulbs are identical )

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In circuit (i) BULBS glow with more brightness then circuit (ii)
In circuit (ii) bulbs glow with more brightness then circuit (i)
In both circuits bulbs glow with same brightness
Cannot be determined

SOLUTION :When same currents flows through the circuit, the bulbs in series COMBINATION glow with more bright-ness than the bulbs in parallel combination.
Discussion
5.

The motion of the hand of a perosn while cutting a water pipe by means of a hack-saw is_________

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to and FRO
translatory
rotatory
data insufficient

Answer :A
Discussion
6.

Black surfaces are poor absorbers of heat radiations.

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ANSWER :F
Discussion
7.

A_________ can be used to level the wet field befor tranplanation

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ANSWER :HARROW
Discussion
8.

A ball rolling on the ground possesses

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KINETIC energy
potential energy
no energy
heat energy

Answer :A
Discussion
9.

The velocity of sound is more in vacuum than in any other medium.

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SOLUTION :Sound requires a MEDIUM to propagate from ONE LOCATION to another. Sound does not travel through vacuum.
Discussion
10.

An electric fan converts electrical energy into........ energy.

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SOLUTION :MECHANICAL
Discussion
11.

A coil carrying current behaves like a magnet.

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ANSWER :TRUE
Discussion
12.

Reset and motion are relative . Explain.

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Discussion
13.

Motion of plough in a field is _________

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TRANSLATORY
rotatory
random
oscillatory

Answer :C
Discussion
14.

Electromagnet

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ELECTRIC motor
Electric GENERATOR
Electric bell
Telegraph

Answer :C
Discussion
15.

The to and fro motion of an object is called____.

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ANSWER :A::B
Discussion
16.

Sitar, veena and guitar are some ________ instruments.

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Solution :Sitar, veena and guitar are STRINGED instruments.
Discussion
17.

We use a ...................... for measuring the temperature of a body.

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SOLUTION :THERMOMETER
Discussion
18.

Read the following statements and choose the correctoption. (A) Moon isa luminous source oflight. (B) A glow worm is a natural source of light.

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Only A is true
Only B is true
Both A and B are true
Both A and B are false

Solution :The moon is not a luminous SOURCE of light, it SIMPLY REFLECTS the light which is INCIDENT on it. A glow worm is a natural source of light.
Discussion
19.

In which of the following electrical appliancesthe principle of the magnetic effect of electric current is used?

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ELECTRIC heater
electric motor
electric bell
Both (B) and (C )

ANSWER :D
Discussion
20.

On touching a lump of ice, we feel cold because some heat passes from our body to the ice

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ANSWER :T
Discussion
21.

A thin piece of steel with shapr teeth on one edge is known as __________

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Tincutter
hack SAW blade
drill bit
Hammer

Solution :A thinpiece of steel with sharp TEETH on oe edge is KNOWN as hack-saw blade
Discussion
22.

The angle of deviation of a light ray reflected by a plane mirror is 150^(@). The angle of reflection is _____.

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`30^(@)`
`60^(@)`
`15^(@)`
`10^(@)`

Solution :The ANGLE of DEVIATION d =180-2i=180-2r
150=180-2r
`2r=30^(@)r=15^(@)`
Discussion
23.

Temperature of the human body is 37^@C Convert into ""^@F What will be its temperature in the Kelvin scale?

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Solution :`F =(9/5) xx ""^@C + 32 = 9/5 xx 37 + 32 = 98.6""^@ F`
`K= 273 + 37 = 310 K`
Discussion
24.

An empty beaker weighs 100 g. When filled with 60 ml of salt solution it weighs 172 g. What is the density of the salt solution?

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SOLUTION :`1.2 g//cm^(3)`
Discussion
25.

Fill in the blanks If heat energy is given to a substance and its temperature remains constant then the substance undergoes a change in_______.

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ANSWER :STATE
Discussion
26.

The image of an object placed in front of a concave mirror found to coincide with object itself. The position of the object is ______.

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at C
between C and F
between F and pole
at F

Solution :When the object is PLACE at centre of curvature (C), the image is also FORMED at the same POSITION.
Discussion
27.

What is meant by average speed ? How is it calculated?

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Discussion
28.

The image formed by a pinhole camera is ______.

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real
INVERTED
The nature of image DEPENDS on the shape of pinhole
Both (a) and (b)

Solution :The image formed by a PIN HOLE camera is real, inverted and the nature of the image does not depend on the shape of the pinhole.
Discussion
29.

Which of the following agricultural tools is used to level the surface of the soil ?

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WOODEN plank
Harrow
Leveller
Plough

Solution :A levller is USED to LEVEL the SURFACE of SOIL
Discussion
30.

the velocity of the bob of a simplependulum is minimum at _____

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Discussion
31.

A black paper absorbs light of all the colours and reflects none.

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ANSWER :T
Discussion
32.

What minimum distance is required between the source of sound and the reflecting surface to hear an echo ? Give reason.

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10m
17m
34m
50m

Answer :B
Discussion
33.

Which of the following is modern scientific machine which can perfome multiple tasks in agriculture?

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Bulllock Cart
Improviesed PLOUGH
Tractor
Computer

Solution :The MODERN SCIENTIFIC meachine which can perform MULTIPLE TASKS in agriculture is a tractor.
Discussion
34.

On a piece of paper certain odd number of horizontal lines at equal distances are drawn. An equal number of vertical lines at equal distances are also drawn, forming rectangles. The rectangles are coloured black or white, set alternately. Three coins are put at random in these rectangles. Let p be the probability of having two coins in rectangles of the same colour and the third in a rectangle of the other colour, and p' be the probability of having all the coins in the rectangles of the same colour. If p : p' =16 : 5 then find the number of horizontal lines drawn on the paper.

Answer»

SOLUTION :
In `DeltaABC`
`angleABC=50^(@)`
`angleACB=70^(@)`
But `angleACB+angleABC+angleCAB=180^(@)`
`70+50+angleCAB=180^(@)`
`angleCAB=180-120=60^(@)`
`N=(360^(@))/(theta)-1=(360^(@))/(60^(@))-1=6-1=5`
Discussion
35.

The heating curve of a particular substance in solid state is as shown in the figure .choose the correct alternative The change of state in the graph is represented by ________part.

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ab
bc
de
both b and c

SOLUTION :The HORIZONTAL portion of graph where temperature is constant represents CHANGE of STATE
Discussion
36.

Which of the folllowing can be attached to multipurpose tool?

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POKER
Chisel
Screw driver
Hammer

Solution :Hammercannot be ATTACHED to a MULTIPURPOSE TOOL
Discussion
37.

Which of the following is an example for agriculture tool?

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screwdriver
wooden PLOUGH
divider
Hack-saw black

Solution :Wooden plough is an EXAMPLE for AGRICULTURE tool
Discussion
38.

One lumen = ______ candle power.

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`10.76`
`12.56`
700
None of these

Answer :B
Discussion
39.

_____ helps to convert light energy into chcmical energy.

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Solution :Chlorophyll in the PLANT leves HELPS to convert LIGHT energy into CHEMICAL energy.
Discussion
40.

A physics student proved that, sunlight consists of different colour's and even gives two examples to supprot this. Explain.

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SOLUTION :(i) The rainbow formed due to passage of sunlight (white coloured LIGHT) through water droplets contains seven colours.
(ii) When we blow a soap-bubble we can see different colours.
(iii) When white light (sun light) REFLECTS from the surface of compact disk, we see MANY colours.
(iv) When light is allowed to pass through a prism, we see a band of seven colours.
`:.` From the above facts he concluded that the light from the sun is a MIXTURE of colours.
Discussion
41.

When a light ray is reflected from a wall, the angle of incidence is not equal to the angle of reflection.

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ANSWER :F
Discussion
42.

The range of temperature that can be measured by using a clinical thermometer is

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`35^(@)C` to `43^(@)C`
`35^(@)F` to `43^(@)F`
35 K to 43 K
all the above

SOLUTION :The RANGE of a CLINICAL thermometer is from `35^(@)C` to`43^(@)C`
Discussion
43.

Descirbe an experiment to show that water is a bad conductor of heat

Answer»
Discussion
44.

{:(,"Column A",,"Column B"),("(A)","Liquid displaced by solid" ,"(a)",10^(5)g),("(B)","1 quintal","(b)",10^(9)mg),("(c)","1 tonne","(c)","Unit of pressure"),("(D)", "kgwt "m^(-2) ,"(d)"," Volume of the solid"):}

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`A to a, B to b, C to c, D to d`
`A to d, B to c, C to b, D to a`
`A to d, B to a, C to b, D to c`
`A to d, B to b, C to c, D to a`

Solution :A -d "" When a body with density more than the density ofliquid is immwesed, the volume of the displaced liquid is EQUAL to the volume of the solid.
B- a ""One quintal = 100 kg
But one kg = 1000 g
`:.` One quintal = `100 xx 1000` " g "
One quintal = `10^(5)` " g 'C-b ""One tonne = 1000 kg
But one kg = 1000 " g "
And one g = 1000 mg
`:.` One tonne = `1000xx 1000xx 1000`" mg "
One tonne = `10^(9)` " mg "
D-c ""kgwt `m(-2)` = kgwt // ` m^(2)`
kgwt is unit of force and `m^(2)` is unit of AREA.
Force per unit area is called pressure.
`:.` kgwt `m^(-2)` is unit of pressure.
Discussion
45.

A switch is an on-off device in an electric circuit.

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ANSWER :TRUE
Discussion
46.

The image distance in case of a convex mirror can be

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GREATER than focal length.
less than focal length
equal to focal length
Both (b) and (C)

Solution :(i) The position of an image in CASE of convex mirror is between POLE and the focus of mirror.
(ii) If an OBJECT is at an infinite distance, the image will be formed at focus.
Discussion
47.

Choose the correct statements (s) among the following alternatives for a 'vice'

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To losen the vice, the handle of the SCREW should be rotaed in a clockwise direction
To tightten the vice, the handle of the screw should be roated in an anti-clockwise direction
The vice has only on MOVABLE jaw
Both (a) and (B)

Solution :To LOOSEN the vice, the handle of the screw should be roated in anti-clock wise direction and the vice has one movable and one FIXED jaw.
Discussion
48.

"______" is a major component of an electric bell.

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SOLUTION :An ELECTROMAGNET is a MAJOR COMPONENT of an elec-tric BELL.
Discussion
49.

Convert -40^@F to the celsius scale.

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SOLUTION :`-40^@C`
Discussion
50.

During the day time mid day is hotter than early morining or late evening it is

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due to the sun's rays FALL normally on the surface of earth during MID day
due to sun's rays that fall OBLIQUELY during the early morininng or late eveniing
not concerned with how the light rays fall
both a and b

Solution :During the day time mid day is hotter than early morning or late EVENING it is because the sun 's rays fall normallly on earth surface at mid day and obliquely duirng early morning (or ) late evening .When radiation falls normally maximum absorption of radiation takes places by the earth and hence we feel morehot and due to oblique INCIDENCE less absorption takes place and hence temperature is minimum
Discussion