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Question Bank
Science and Technology Part 1
Que 1: Choose the correct option in the multiple choice answer for the following
questions:-

( 1 mark each)

1) A ……
...

a) force

b) inertia

c) momentum

d) motion

2) The orbit of a planet revolving around a star is ……
a) circular

b) linear

c) towards the focal point d) elliptical

3)The square of its period of revolution around the sun is directly proportional to the
………
...

a) square b) square root c) cube d) cube root
4) The gravitational force between two bodies is directly proportional to the product of
the masses of those bodies and is ………
...

a) inversely proportional to the square
b) directly proportional to the square
c) inversely proportional to the cube
d) inversely proportional to the square root
5) The value of universal gravitational constant (G) in SI unit is…………
a) 6
...
673 × 10

2

Nm / kg

-11

2

11

b) 6
...
673 × 10

-11

2

Nm / kg

2

6) The ……………
...

a) gravitational b) electromagnetic c) nuclear force d) inter molecular
7) The value of gravitational acceleration (g) is ………
...

a) 9
...
832 m/s c)

9
...
67 m/s

2

9) The free fall of an object is possible only in……
...

a) 1/6

b) 1/8

c) 1/2

d) 2/6

11) A person weighs 60N on earth
...
rule
...

a) oxygen b) calcium c) cobalt d) potassium
14) X and Y are two elements having similar properties which obey Newlands’s Law of
Octaves
...
elements were known
...

a) Scandium b) Gallium c) Germanium d) Thorium
17)In Modern Periodic Table the number of columns and periods are respectively
……
...

a) 16,7

b) 6,16

c) 18,7 d)18,6

18)……
...

a) K

b) L

c) M

d) N

19)The groups 1 and 2 constitute the………block
...

Na, Si, Cl, Mg, Al
a) Cl > Si > Al > Mg > Na

b) Na > Mg > Al > Si > Cl

c) Na > Al > Mg > Cl > Si

d) Al > Na > Si > Ca > Mg

24)Which one of the following does not increase while moving down the group of the
Modern periodic table
a) Atomic radius

b) Metallic character c) Valency d) Number of shells

25) On moving from left to right in a periodic table, the size of the atom……
...

b) 7 vertical columns are known as Periods
...


d) 7 horizontal rows are known as Periods
...

a) atomic number b) radius c) number of shells d) atomic mass
29)……
...

a) Atomic radius b) Atomic diameter c) atomic mass d) atomic size
30)Atomic radius is expressed in the unit …
...
character of that element
...

a) Fluorine b) Chlorine c) Bromine d) Iodine
33)While going from top to bottom in a group the atomic radius………
a) increases b) decreases c) remains same d) No change occurs
34) The tendency of an element to form anion is the ………
...

a) non metallic b) basic c) metallic

d) acidic

35)The elements from the zero group are called…
...

a) chemical change b) chemical symbol
c) chemical equation d) chemical reaction
37)When the positive charge on an ion increases or the negative charge on them
decreases it is called as…………
...
reaction
...
are written on the left hand side
...

a) displacement

b) double displacement c) redox d) reduction
...

a) Volt b) Watt c) Joul d) Ampere
42)The ‘live’ and the ‘neutral’ wires have potential difference of ……
a) 110 V b) 202V

c) 201 V

d) 220 V

43) In an electric bulb coil of …………
...

a) copper b) Tungsten c)

aluminium d) iron

44) The electricity bill specifies the usage in ………
...
Hz
a) 20Hz

b) 50Hz

c) 25Hz

d)75Hz

46) These days when current in the circuit suddenly increases……
...

a) MCA

b) MCC

c) MCD

d) MCB

47) A coil of an alloy……………
...

a) Stainless steel b) Nichrome

c) Copper

d) Bronze

48) The right hand thumb rule is also called ……………
...

a) Newton’s law of motion b) Newland’s law of Octave
c) Mendeleev’s periodic law d) Maxwell’s cork- screw
49)……………
...

a) Thermometer

b) Galvanometer

c) Voltmeter d) Electric meter

50)Which of the following scientist invented the rule of electromagnetic induction?
a) Newton

b) Kepler

c) Mendeleev

d) Michael Faraday

51) Which of the following substance contracts on heating?
a)Lukewarm water b) Ice

c) Iron

d) Mercury

52)If pressure increases the melting point of a substance ………
...

a) relative humidity b) dew point c) absolute humidity

d) none of these

54)Humid and dry nature of air depends on the………
a) amount of vapor in the air b) amount of vapor to make the air saturated
c) temperature of the air

d) volume of the air

55) Vapors in air condenses to form……
...

a) decreases b) increases c) remains same d) none of these
0

57) In a region with a cold climate the aquatic animals can survive at 4 C, because……
...

a) copper

b) silver c) iron

d) mercury

59) Ice-ball is prepared from shredded ice again
...

a) Kcal

b) Cal

0

c) Cal/g c

0

d) J/Kg c

61) …………………
...

a) calorimeter b)Joul’s apparatus

c) Hope’s apparatus d) Thermos flask
0

0

62) ……………
...
5 c to 15
...

a) 4180 Joul

b)1 KJoul

c) calorie

d) 4180 calorie

63) due to …………………
...


a) refraction of light

b) dispersion of light

c) internal reflection of light

d) reflection of light

64)In the following diagram if  ∠ i =40, then  ∠ e =
...
Then
the angle of incidence will be………
...

a) refraction of light

b) dispersion of light

c) partial reflection of light

d) reflection of light

67)…………this is the unit of refractive index
...


a) 𝑠𝑖𝑛 𝑖
𝑠𝑖𝑛𝑟

b)

𝑠𝑖𝑛 𝑟
𝑠𝑖𝑛𝑒

c)

sin𝑠𝑖𝑛 𝑒
sin𝑠𝑖𝑛 𝑟

d)

sin𝑠𝑖𝑛 𝑖
sin𝑠𝑖𝑛 𝑟

69)Lights of different colours are used ad signal for safety transport
...

a) 400

b)500

c) 600

d) 700

70)If the refractive index of air with respect to glass is 2/3
...

a) reflection of light

b) refraction of light

c) dispersion of light

d) absorption of light

72)Light changes its direction when going from one transparent medium to another
transparent medium
...

a) once

b)twice

c) thrice d) doesn’t happen

74)The point inside the lens on the principal axis through which light rays pass without
changing their path is called ………………

a) centre of curvature b) optical centre c) principal focus d) axiom point
75) Virtual image is formed if an object is placed …………
...

a) optic nerves b) cornea c)optic disc d)

pupil

79)For a normal human eye the near point is at………
a) 2
...
5cm

c)25cm

d)5cm

80)The image formed by ……
...

a) plane convex b) biconvex

c) biconcave

d) bifocal

81)In a relaxed state , the focal length of healthy eyes is ……
...
5cm

c) 25cmd) 5cm

82)For a specific glass lens f=0
...
This is the only Information given to the student
...
5; concave lens
d) power -0
...

a) cannot see nearby objects distinctly b)cannot see distant objects clearly
c) cannot see nearby as well as distant objects clearly
d) can see nearby as well as distant objects clearly
84) Due to elongation of…………
...

a) eyeball b) pupil c) eyelid d) cornea
85) In hypermetropia human eye ………
...

a) myopia b) hypermetropia

c)

presbyopia

d) none of these

87} ……
...

a) 5 b) 10

c) 20

d) 60

88) ………… is a combination of two convex lenses with small focal length
...

a) copper and tin b) copper and zinc c) copper and iron d) iron and nickel
90)……………
...

a) brass b) bronze c) stainless steel

d) amalgam

91) ……………
...

a) CO2

b)

K2O

c) SO2

d) Al2O3

92)In electrolytic reduction of alumina ……………is used as a cathode
...

a) more reactive than zinc b) more reactive than aluminium
c) less reactive than copper d) less reactive than aluminium
94)If Cu, Fe, Zn, Al elements are arranged in increasing order of their reactivity
Then the correct order would be which of the following?
a) Cu, Fe, Zn, Al     b) Al, Cu, Fe, Zn    c)  Zn, Al, Cu, Fe      d)  Fe, Zn, Al, Cu
95) Which of the following method is used to prevent the accumulation of greenish
layer on brass due to corrosion
a) electroplating

b) anodization

c)

tinning

d) alloying

96)In Wilfley table method to separate particles of gangue ………
...

a) Magnetic b) Froth floatation
97)Aluminium oxide is ………
...


c) Leaching

d) gravitation

a) acidic

b ) basic c) neutral

d) amphoteric

98)Atomic number of aluminium is … and its electronic configuration is……………
a) 13, ( 2, 8, 3)     b) 12  ( 2, 8, 2)     c) 13,  (3, 10)     d) 12, (2, 10)
99) The chemical formula of zinc blend is…
...
method
...
method is used
...
acid are mixed
...

a) Chlorine b) Bromine c) Iodine

d) Fluorine

106)Ionic compounds are electrically …………
...
is good conductor of heat but bad conductor of electricity
...

a) silver b) sodium c) zinc d) gold
109)………
...

a) CuSO4    b) FeSO4  c) NaCl

d) all the above

110)Tin is an alloy of ………
...

a) amalgam b) sodium amalgam c) zinc amalgam d) all the above
112) The minerals from which the metal can be separated economically are called ………
a) minerals b) ores c) gangue d) alloy
113)Generally the melting and boiling point of carbon compounds are found to be less
0

than ……
...

a) 4

b) 5

c) 1

d) 3

115)The bond between two oxygen atoms is …………bond
...

a)10

12

b) 10

14

c) 10

10

d) 10

13

117)The unsaturated hydrocarbons containing a carbon- carbon double bond are
called…
...

a) Alkenes

b) Alkanes

c) Alkynes

d) Alcohol

119)The phenomenon in which compounds having different structural formulae have
the same molecular formula is called …………
a) structural isomerism b) catenation

c)homologous d) functional group

120) From the following hydrocarbon ………………is the cyclic hydrocarbon
...

a) 14 u

b) 15u

c) 16 u

  d) 17u

122) The general molecular formula for the homologous series of alkynes is ………
...
is one of the combustible components of L
...
G
...

a) methanol

b) ethanol c) propanol d) butanol

126)Due to………
...

a) worldwide web b) internet

c) artificial satellite d) natural satellite

127) The first person to step on the moon is ……
...

a) Apollo

b) Chandrayaan c) Sputnik

d) Luna 2

129)If a spacecraft is to be sent to travel to outer space
...
2 km/s

b)11
...
2km/s

d)1
...
through ISRO in
2016

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