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- 1. Multiple Choice
The process of comparing an unknown quantity with known quantity is called :
(a) Load
(b) Effort
(c) Measurement
(d) Weighing
- 2. Multiple Choice
Which basic units are involved in dioptre unit ?
(a) kg, m , sec, A
(b) m
(c) kg , m .N
(d) kg, sec, N
- 3. Multiple Choice
Which one is the unit of intensity of sound ?
(a) Watt
(b) deciball
(c) pascal
(d) Ampere
- 4. Multiple Choice
How many inch in 1 yard?
(a) 20 inch.
(b) ) 25 inch.
(c) ) 36 inch..
(d) ) 39 inch.
- 5. Multiple Choice
The product of 1gm and 1cm/s2 is called
(a) 1 joule
(b) 1 Newton
(c) 1 Pascal
(d) 1 dyne
- 6. Multiple Choice
A force, when acting on an object of 1 kg mass, produces acceleration of 1m/s2 in it is known as:
(a) 1 Watt power
(b) 1 Joule energy
(c) 1 Pascal pressure
(d) 1 Newton force
- 7. Multiple Choice
On which place of earth the value of g is more of the following ?
(a) Equator
(b) Center
(c) pole
(d) Hilly region
- 8. Multiple Choice
An object of mass 30 kg is taken to a height “h” where g = 5m/s2 , there its mass is :
(a) 5 kg
(b) 6 kg
(c) 15 kg
(d) 30kg
- 9. Multiple Choice
Distance of moon from earth is
(a) 3.84 × 108 m
(b) 3.84 × 108 km
(c) 1.5 ×108 km
(d) 6 × 108 m
- 10. Multiple Choice
A cylindrical object of wood weighs 10 N on earth and 1.6 N on moon. Its mass is
(a) 1 kg
(b) 16 kg
(c) 8.4 kg
(d) 6.25 kg
- 11. Multiple Choice
Which one is the right relation between density(D) and volume(V) of an object?
(a) D = V
(b) D ∝ V
(c) D ∝1/v
(d) D ∝1/v2
- 12. Multiple Choice
A device which is used to measure the density of liquid is called?
(a)Thermometer .
(b) Lactometer .
(c) Hydrometer.
(d) Nanometer.
- 13. Multiple Choice
The ratio of density of the substance to the density of water at 40c is called:
(a) Essential density.
(b) Liquid density.
(c) Proper density.
(d) Relative density.
- 14. Multiple Choice
When upthrust is equal to weight of an object, it
(a) floats
(b) sinks
(c) moves
(d) stops
- 15. Multiple Choice
Barometer is invented by
(a) Galileo
(b) Robert Boyle
(c) Charles
(d) Torricelli
- 16. Multiple Choice
Which one is different among them?
(a) mc2
(b) hdg.
(c) 1/2mv2
(d) mgh
- 17. Multiple Choice
Capacity of a body to do work is called
(a) energy
(b) work load
(c) kinetic energy
(d) potential energy
- 18. Multiple Choice
Which of the following is the form of heat?
(a) energy
(b) force
(c) power
(d) resistance
- 19. Multiple Choice
On Fahrenheit scale, upper fixed point is marked as
(a) 32 °F
(b) 212 °F
(c) 100 °F
(d) 0 °F
- 20. Multiple Choice
Melting point of ice at Fahrenheit is
(a) 32 degree
(b) 100 degree
(c) 212 degree
(d) 75 degree
- 21. Multiple Choice
Boiling point of liquid hydrogen is equal to −253 °C, which is equal to
(a) 373 K
(b) 20 K
(c) 273 K
(d) 100 K
- 22. Multiple Choice
Amount of heat energy required to raise temperature of 1 kg of substance by 1 °C is termed as
(a) General Heat capacity
(b) Specific Heat Capacity
(c) Latent Heat
(d) Specific Latent Heat
- 23. Multiple Choice
Between the melting point and boiling point at a substance is a .................. .
(a) Solid
(b) Liquid
(c) Gas
(d) Crystal
- 24. Multiple Choice
Angle of incidence is equal to angle of ...................... .
(a) reflection
(b) refraction
(c) transmission
(d) incident
- 25. Multiple Choice
Angle of reflection lies between reflected ray and ............. .
(a) normal line
(b) incident ray
(c) convergent ray
(d) all of them
- 26. Multiple Choice
Ratio of speed of light in air ( vacuum) and speed of light in a medium is known as
(a) regular reflection
(b) reflective index
(c) refractive index
(d) regular refraction
- 27. Multiple Choice
Power of a lens is defined as reciprocal of its ................... .
(a) focal length in meter
(b) principal axis
(c) optical centre
(d) vertex
- 28. Multiple Choice
Study of light behavior is called
(a) lenses
(b) optics
(c) mechanics
(d) heat
- 29. Multiple Choice
The image which cannot be obtained on the screen is called:
(a) imaginary image
(b) Real image
(c) inverted image
(d) Virtual image
- 30. Multiple Choice
People with long-sightedness are treated by using .................... .
(a) concave lens
(b) convex lens
(c) lens
(d) none of them
- 31. Multiple Choice
If the radius of curvature of a mirror is 20cm then the focal length is
(a) 20cm
(b) 10cm
(c) 40cm
(d) 5cm
- 32. Multiple Choice
Which of the following has longest wavelength ?
(a) radio waves
(b) infrared
(c) ultraviolet
(d) gamma rays
- 33. Multiple Choice
Which of the following is speed of light in vacuum ?
(a) 0.3 × 107 m/s
(b) 3 × 107 m/s
(c) 30 × 107 m/s
(d) 3 × 108 km/s
- 34. Multiple Choice
When a person has hypermetropia, the image is formed
(a) in front of retina
(b) behind retina
(c) on blind spot
(d) none of them
- 35. Multiple Choice
Electric current generates from which part of an atom?
(a) Nucleus
(b) Proton
(c) Electron
(d) Neutron
- 36. Multiple Choice
Which on is converts chemical energy into electric energy?
(a) Solar cell
(b) generator
(c) Battery
(d) Nichrome wire
- 37. Multiple Choice
According to the Ohm’s law, if resistance decreases and voltage stays the same then :
(a) resistance increases
(b) Current increases
(c) Current remains same
(d) Current decreases
- 38. Multiple Choice
Which instrument is used to measure the resistance of electricity?
(a) ammeter
(b) voltmeter
(c) ohmmeter
(d) wattmeter
- 39. Multiple Choice
A current of 2A flows through a 12V bulb then calculate the resistance .
(a) 24 Ohm
(b) 0.165 Ohm
(c) 6 Ohm
(d) 48 Ohm
- 40. Multiple Choice
1 Ampere is equal to :
(a) 1 colb/1sec.
(b) 1 colb ×1sec
(c) 1 sec/1 colb
(d) None of above
- 41. Multiple Choice
By which metal the filament of an electric bulb is made of?
(a) carbon
(b) Nichrome
(c) aluminium
(d) tungsten
- 42. Multiple Choice
Nichrome wire is an alloy of :
(a) copper and silver
(b) nickel and chromium
(c) lead and Zinc
(d) nitrogen and chromium
- 43. Multiple Choice
Which of the following is the source of electricity?
(a) Bulb
(b) Cell
(c) Transformer
(d) Voltmeter
- 44. Multiple Choice
A short thin piece of wire which is heated up and melt by flowing of electric current in it, is called
(a) circuit
(b) fuse
(c) cell
(d) resistor
- 45. Multiple Choice
In Nepal, frequency of alternating current is
(a) 40 Hz
(b) 50 Hz
(c) 60 Hz
(d) 70 Hz
- 46. Multiple Choice
Adding common salt to distilled water makes it
(a) Good conductor
(b) Insulator
(c) Resistor
(d) Both a and b
- 47. Multiple Choice
When water is electrolyzed, then which gas collected at cathode?
(a) sulphur
(b) oxygen
(c) hydrogen
(d) sulphur dioxide
- 48. Multiple Choice
Abbreviation of 'MCB' is for
(a) moving circuit breaker
(b) manual current breaker
(c) manual circuit breaker
(d) miniature circuit breaker
- 49. Multiple Choice
If secondary voltage is smaller than primary voltage, transformer is called as:
(a) positive transformer
(b) step-up transformer
(c) negative transformer
(d) step-down transformer
- 50. Multiple Choice
What is the angle of dip at the magnetic pole of the earth?
(a) 00
(b) 450
(c) 900
(d) 1200
- 51. Multiple Choice
Nichrome is known as
(a) lighting element
(b) heating element
(c) inert element
(d) active element
- 52. Multiple Choice
Which of the following is source of current ?
(a) Ammeter
(b) Voltmeter
(c) Galvanometer
(d) Battery
- 53. Multiple Choice
What is the SI unit of the ratio of quantity of charge “Q” and time “t” ?
(a) Volt
(b) Ampere
(c) Ohm
(d) Watt
- 54. Multiple Choice
The formation of hydrogen layer on copper plate in dry cell is known as:
(a) local action
(b) polarization
(c) anode
(d) amalgamating
- 55. Multiple Choice
What is the power of a lamp, if it is connected to a 12 V battery and draws a current of 0.5 A?
(a) 6 W
(b) 0.5 W
(c) 12W
(d) 24W
- 56. Multiple Choice
Average distance between nucleus and outer shell is called ............. .
(a) atomic size
(b) nuclear size
(c) shielding effect
(d) none of above
- 57. Multiple Choice
Which group of periodic table contains alkaline earth metal?
(a) IA
(b) IIIA
(c) IIA
(d) IVA
- 58. Multiple Choice
Brass is an example of
(a) An alloy
(b) a compound
(c) a mixture
(d) an element
- 59. Multiple Choice
When 4S orbital is complete, the entering electron goes into
(a) 5s
(b)5p
(c) 3d
(d) 4p
- 60. Multiple Choice
Which of the following is the very light and inert gas?
(a) oxygen
(b) hydrogen
(c) helium
(d) neon
- 61. Multiple Choice
How many number of neutrons (n0) in Atom of aluminum (Al)?
(a) 13
(b) 27
(c) 14
(d) 13
- 62. Multiple Choice
A substance whose all atoms have same atomic number is ............. .
(a) molecule
(b) element
(c) atom
(d) ion
- 63. Multiple Choice
All of these radicals have a valency of 2, except ............... .
(a) SO4
(b) CO3
(c) NH4
(d) SiO3
- 64. Multiple Choice
All are covalent compounds except .................... .
(a) CH4
(b) C2H6
(c) CH3Cl
(d) NaCl
- 65. Multiple Choice
Number of proton, neutron and electron in sulfide ion is respectively ....................... .
(a) 16,17 and 18
(b) 17,16 and 18
(c) 18,17 and 16
(d) 16,16 and 18
- 66. Multiple Choice
When state of matter is changed from liquid to gas, we call it
(a) melting
(b) freezing
(c) boiling
(d) condensing
- 67. Multiple Choice
The horizontal rows in a periodic table are called
(a) atomic structure
(b) periods
(c) actinides
(d) groups
- 68. Multiple Choice
Which one is wrong statement?
(a) Number of neutrons = atomic mass – atomic number
(b) Atomic number = number of proton = number of electron
(c) Atomic number = atomic mass – numbers of neutron
(d) atomic mass = numbers of neutrons – atomic number
- 69. Multiple Choice
From left to right in a period of periodic table proton number
(a) decrease
(b) neutral
(c) increase
(d) none
- 70. Multiple Choice
NaOH + HCl →
(a) Na(OH)2 + H2
(b) NaCl + H2
(c) NaCl + H2O
(d) NaCl + H2 + O2
- 71. Multiple Choice
To balance Al(OH)3 + HNO3 → Al(NO3)3 + H2O, number HNO3 molecules will be
(a) 1
(b) 2
(c) 3
(d) 4
- 72. Multiple Choice
In Na2CO3, relative atomic mass of Oxygen is
(a) 12 amu
(b) 24 amu
(c) 36 amu
(d) 48 amu
- 73. Multiple Choice
If atomic weight and proton number of an atom is 24 and 12 respectively, number of electrons and neutron will be
(a) 36,12
(b) 12,12
(c) 24,24
(d) 12,24
- 74. Multiple Choice
If NaOH reacts with HCl, reaction can be known as
(a) combustion
(b) Thermal decomposition
(c) Neutralization
(d) Decomposition
- 75. Multiple Choice
Phosphoric acid has formula .......... .
(a) H2PO3
(b) H2PO4
(c) H3PO4
(d) H3PO3
- 76. Multiple Choice
In pH , the p is stand for :
(a) proton
(b) potential
(c) process
(d) primary
- 77. Multiple Choice
Metal oxides are also called:
(a) acid oxides
(b) basic oxides
(c) neutral oxides
(d) none
- 78. Multiple Choice
When acid reacts with metal carbonate, products are
(a) salt
(b) water
(c) carbon dioxide
(d) all of above
- 79. Multiple Choice
Which one is not a base?
(a) NaOH
(b) HNO3
(c) Ca(OH)2
(d) NH4OH
- 80. Multiple Choice
−78 °C is the….
(a) freezing point of carbon dioxide
(b) boiling point of carbon dioxide
(c) melting point of oxygen gas
(d) Both A and B
- 81. Multiple Choice
Name a gas which is used in making chloroform?
(a) Methane
(b) Propane
(c) Butane
(d) Acetylene
- 82. Multiple Choice
Which gas is produced when metal react with acids
(a) Oxygen
(b) Nitrogen
(c) Hydrogen
(d) Carbon dioxide
- 83. Multiple Choice
What is dry ice?
(a) Solid Oxygen
(b) Solid Carbon Dioxide
(c) Solid Hydrogen
(d) Solid Nitrogen
- 84. Multiple Choice
Ore of iron is ......................... .
(a) Haematite
(b) Chalcopyrite
(c) Bauxite
(d) Halite
- 85. Multiple Choice
Which of the following is represent mercury(ii) ion correctly ?
(a) Hg --
(b) Hg ++
(c) Hg2 ++
(d) Hg2--
- 86. Multiple Choice
Formula of tetra chloromethane is ................. .
(a) CCl4
(b) CH4Cl4
(c) C(HCl)4
(d) C4. HCl4
- 87. Multiple Choice
Chloroform is also called
(a) Chloromethane
(b) Dichloromethane
(c) Trichloromethane
(d) Tetrachloromethane
- 88. Multiple Choice
What is general formula of alkenes?
(a) CnH2n+2
(b) CnH2n
(c) CnH2n-2
(d) None of these
- 89. Multiple Choice
If we remove one hydrogen (H) atom from alkane (saturated hydrocarbon), we get
(a) alkyl group
(b) alkene group
(c) alkyne group
(d) aldehyde group
- 90. Multiple Choice
General formula for alcohol is
(a) R-OH
(b) R-O-R
(c) R-COOH
(d) R-NH2
- 91. Multiple Choice
Ice floats on top of water because
(a) Water expands on freezing
(b) Water contracts on freezing
(c) Ice is lighter than iron
(d) None of these
- 92. Multiple Choice
Insoluble salt is ..................... .
(a) Sodium Chloride
(b) Lead Chloride
(c) Magnesium Chloride
(d) Potassium hydroxide
- 93. Multiple Choice
Solution of mercury with other metals is called
(a) amalgam
(b) sat urated solution
(c) supersaturated solution
(d) unsaturated solution
- 94. Multiple Choice
What is molecular formula of sodamide?
(a) NaOH
(b) NH2CONH2
(c) NaNH2
(d) Ca(OH)2
- 95. Multiple Choice
Oxygen is used in the production of which type of gas for welding and cutting?
(a) Propane
(b) Butane
(c) Acetylene
(d) Methane
- 96. Multiple Choice
Solid solutions of metals are called
(a) alloys
(b) amalgams
(c) saturated solutions
(d) supersaturated solution
- 97. Multiple Choice
What is the chemical equation for the reaction that produces carbon dioxide from vinegar and baking soda?
(a) NaHCO3 + HCl → NaCl + H2O + CO2
(b) NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
(c) NaHCO3 + NaOH → Na2CO3 + H2O + CO2
(d) NaHCO3 + CH3COOH → NaCH3COO + H2O + CO2
- 98. Multiple Choice
What is an example of a second-grade preservative?
(a) Sodium benzoate
(b) Salt
(c) Ascorbic acid
(d) Vinegar
- 99. Multiple Choice
Methane' is an example of
(a) carbohydrates
(b) hydrocarbons
(c) alcohols
(d) alkenes
- 100. Multiple Choice
Acetylene is another name of
(a) Ethyne
(b) Propene
(c) Butene
(d) Pentene
- 101. Multiple Choice
What is physical state of first four alkanes?
(a) Solid
(b) Liquid
(c) Gas
(d) Plasma
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