Q. 1 Communication by touch is called
A) Proxemics communication
B) Haptics communication
C) Chronemics communication
D) Semantics communication
✔ Haptics communication
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Q. 2 The capacity of a stream is directly related to its
A) Gradient
B) Velocity
C) Meandering
D) Discharge
✔ Discharge
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Q. 3 Speed in a given direction is called
A) Torque
B) Velocity
C) Displacement
D) Acceleration
✔ Velocity
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Q. 4 Friction can be reduced by changing from
A) Rolling to Sliding
B) Static to Dynamic
C) Sliding to Rolling
D) Dynamic to Static
✔ Sliding to Rolling
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Q. 5 A doppler effect occurs when a source of sound moves
A) towards you
B) away from you
C) None of the above
D) Both A & B
✔ Both A & B
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Q. 6 A sample of matter must be copper if
A) the sample can conduct electricity
B) atoms in the sample react with oxygen
C) the sample melts at 1768k
D) each atom in the sample has 29 protons
✔ each atom in the sample has 29 protons
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Q. 7 Nuclear Fission is caused by the impact of
A) Neutron
B) Electron
C) Deutron
D) Proton
✔ Neutron
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Q. 8 Which of these relationships is true of an uncharged atom?
A) The number of electrons is equal to the number of neutrons.
B) The atomic mass is equal to the atomic number.
C) The atomic mass is equal to the number of electrons.
D) The number of protons is equal to the number of electrons.
✔ The number of protons is equal to the number of electrons.
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Q. 9 What is unit of Viscosity ?
A) newton second per square meter
B) coulomb
C) joule per kilogram per Kelvin
D) watt per meter per degree celcius
✔ newton second per square meter
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Q. 10 Who expanded the cell theory and suggested that all the cells arise from pre-existing cells?
A) M. Schleiden
B) T. Schwann
C) Rudolf Virchow
D) J. E. Purkinje
✔ Rudolf Virchow
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Q. 11 What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?
A) 11.2 km/sec
B) 18 km/sec
C) 35 km/sec
D) 21 km/sec
✔ 11.2 km/sec
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Q. 12 Electrical burns occur principally because of
A) The heat generated by the flow of electrical current through the body
B) Radiation pulses of the electricity
C) All of the above
D) The high energy of electrons
✔ The heat generated by the flow of electrical current through the body
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Q. 13 The function of nitrogen in air is
A) to maintain the density of air constant
B) to make air a moderate supporter of combustion
C) to reduce the poisonous nature of ozone in air
D) to prevent the hydrogen in air from exploding
✔ to make air a moderate supporter of combustion
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Q. 14 The atoms of the elements which have same number of neutrons are called
A) Isotopes
B) Isobars
C) None
D) Isotones
✔ Isotones
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Q. 15 In a vacuum, all electromagnetic waves have the same
A) Wavelenth
B) Velocity
C) All the above
D) Frequency
✔ Velocity
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Q. 16 What device converts light energy to electrical energy?
A) Photovoltaic cell
B) Photodiode
C) Heliostats
D) Thermocouple
✔ Photovoltaic cell
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Q. 17 ____ is not an example of refraction of light.
A) Mirages
B) Twinkling effect of stars
C) Bending of light while passing through a medium
D) Lateral inversion
✔ Lateral inversion
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Q. 18 What does the Aufbau Principle state
A) Electrons will be added to an atom only if the orbitals are different colors.
B) Electrons will be added to an atom starting from the lowest possible level or sublevel.
C) Electrons will be added to an atom in a symmetrical manner.
D) Electrons will be added to an atom in a random order.
✔ Electrons will be added to an atom starting from the lowest possible level or sublevel.
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Q. 19 Which of the following is not true about Frictional force?
A) The force of friction that acts when a body is moving (sliding) on a surface is called sliding friction
B) Friction is the force which opposes the relative motion of two surfaces in contact
C) Rolling friction is much more than sliding friction, the use of ball bearings in a machine considerably reduces friction
D) Friction in machines wastes energy and also causes wear and tear
✔ Rolling friction is much more than sliding friction, the use of ball bearings in a machine considerably reduces friction
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Q. 20 Gasoline is useful in cars because it has
A) electrical potential energy
B) chemical potential energy
C) kinetic energy
D) gravitational potential energy
✔ chemical potential energy
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