The intermolecular attractive forces between the liquid molecules can be decreased by:
A)
Cooling the liquid
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B)
Heating the liquid
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C)
Turning the liquid into solid
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D)
All of these
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E)
None of these
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The minerals required by a plant in very small quantities are called:
A)
Macronutrients
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B)
micronutrients
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C)
Fertilizers
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D)
manures
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E)
None of these
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In transverse waves, the particles of the medium move _______ to the direction of motion of the wave.
A)
Parallel
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B)
Perpendicular
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C)
Curved
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D)
Both parallel and perpendicular
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E)
None of these
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Evaporation of a liquid occurs at:
A)
Its boiling point
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B)
Room temperature
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C)
All temperatures
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D)
A temperature higher than its boiling point
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E)
None of these
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36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.
A)
25%
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B)
26.47%
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C)
23.5%
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D)
27.23%
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E)
None of these
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Which one of the following is not a property of suspension?
A)
A suspension is not transparent to light
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B)
Suspended particles are visible through naked eye
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C)
Filter paper can be used to separate components of a suspension
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D)
A suspension is homogeneous in nature
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E)
None of these
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Carbon is stored in our planet as:
A)
Organic molecules, in the living and dead organisms found in the biosphere
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B)
Carbon dioxide in atmosphere
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C)
Organic matters in soil
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D)
All of these
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E)
None of these
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Murrah is a high yielding breed of:
A)
Cow
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B)
Hen
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C)
Buffalo
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D)
Sheep
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E)
None of these
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The movement of colloidal particles under the influence of electric field is known as:
A)
Brownian movement
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B)
Electrophoresis
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C)
Tyndall effect
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D)
Coagulation
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E)
None of these
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Which one of the following is a mixture?
A)
Sugar
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B)
Water
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C)
Blood
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D)
Glucose
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E)
None of these
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Which of the following is a degenerative disease?
A)
Osteoporosis
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B)
Kidney failure
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C)
Myopia
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D)
All of these
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E)
None of these
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The electrons present in outermost shell of an atom are called:
A)
Valence electrons
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B)
Core electrons
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C)
Charged electrons
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D)
Free electrons
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E)
None of these
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Which one of the following is a communicable disease?
A)
Diabetes
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B)
Arthritis
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C)
Cancer
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D)
Marasmus
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E)
None of these
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The life-supporting zone of the earth where the atmosphere, the hydrosphere and the lithosphere interact and make life possible, is known as:
A)
Asthenosphere
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B)
Biosphere
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C)
Ionosphere
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D)
Exosphere
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E)
None of these
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Give the name of elements present in the compound of baking soda.
A)
Sodium, hydrogen, carbon, oxygen
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B)
Sodium, hydrogen, oxygen
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C)
Bromine, calcium, oxygen, carbon
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D)
Potassium, sulphur, oxygen
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E)
None of these
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What is the atomicity of the molecule \[Si{{H}_{4}}\]?
A)
1
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B)
2
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C)
3
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D)
4
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E)
None of these
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Calculate the mass percentage of each element present in water.
A)
H = 22.22% and O = 77.78%
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B)
H = 77.78% and O = 22.22%
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C)
H = 11.11% and O = 88.89%
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D)
H = 88.89% and O = 11.11%
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E)
None of these
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Which one of the following is not a characteristic of isotopes?
A)
The isotopes of an element have the same number of protons and electrons but different numbers of neutrons
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B)
The isotopes of an element have same mass numbers
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C)
The isotopes of an element exhibit different physical properties such as density, melting point, boiling point etc.
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D)
The isotopes of an element possess the same electronic configuration and the same number of valence electrons and exhibit same chemical properties
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E)
None of these
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Which one of the following is a scalar quantity?
A)
Force
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B)
Length
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C)
Displacement
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D)
Velocity
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E)
None of these
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Jellyfish belongs to which one of the following phyla?
A)
Cnidaria
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B)
Porifera
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C)
Arthropoda
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D)
Platyhelminthes
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E)
None of these
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Find the odd one out from the following.
A)
Mosses
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B)
Liverworts
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C)
Ferns
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D)
Hornworts
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E)
None of these
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When an object undergoes acceleration:
A)
Its speed always remains constant
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B)
Its speed always decreases
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C)
It always falls towards earth
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D)
A force always acts upon it
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E)
None of these
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An observer standing between two cliffs hears two successive echoes at 2 s and 3 s. Calculate the distance between cliffs (speed of sound in air =\[340\text{ }m/s\]).
A)
340 m
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B)
850 m
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C)
510 m
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D)
790 m
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E)
None of these
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Which one of the following is not a part of animal cell?
A)
Plasma membrane
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B)
Nucleus
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C)
Mitochondria
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D)
Ribosome
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E)
None of these
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Which one of the following statements is incorrect about plasma membrane?
A)
It gives definite shape to the cell
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B)
It provides protection to the internal contents of the cell
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C)
It helps in the storage of proteins, starch and lipids
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D)
All of these
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E)
None of these
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Genes are located on the:
A)
Nuclear membrane
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B)
Chromosomes
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C)
Lysosomes
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D)
Ribosomes
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E)
None of these
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Find the odd one out from the following.
A)
Tracheids
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B)
Xylem parenchyma
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C)
Xylem fibres
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D)
Companion cells
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E)
None of these
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Which one of the following is a type of connective tissue?
A)
Blood
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B)
Bone
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C)
Cartilage
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D)
All of these
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E)
None of these
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The given animal belongs to which one of the following classes?
A)
Pisces
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B)
Amphibia
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C)
Reptilia
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D)
Aves
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E)
None of these
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A car acquires a velocity of 48 km/h in 8 seconds just after the start. Calculate the acceleration of the car.
A)
\[3.15\text{ }m/{{s}^{2}}\]
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B)
\[4.16\text{ }m/{{s}^{2}}\]
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C)
\[1.67\text{ }m/{{s}^{2}}\]
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D)
\[6.18\text{ }m/{{s}^{2}}\]
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E)
None of these
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The velocity-time graph for a car is shown in the figure below.
Using this graph, calculate the average speed of the car.
A)
\[40\,km/h\]
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B)
\[30\text{ }km/h\]
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C)
\[64\text{ }km/h\]
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D)
\[80\text{ }km/h\]
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E)
None of these
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32. Calculate the number of molecules of chloroform \[(CHC{{I}_{3}})\]weighing \[0.0239\text{ }g\text{ }(H=1,C=12,\,Cl=35.5)\].
A)
\[1.2046\times {{10}^{22}}\]
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B)
\[2.2046\times {{10}^{19}}\]
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C)
\[1.4046\times {{10}^{17}}\]
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D)
\[1.2046\times {{10}^{20}}\]
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E)
None of these
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A car weighing 1600 kg moving with a velocity of \[30\text{ }m/s\]retards uniformly coming to rest in 20 s. Calculate the magnitude of the force applied.
A)
\[-600\,\,N\]
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B)
\[-1200\text{ }N\]
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C)
\[-2000\text{ }N\]
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D)
\[-2400\text{ }N\]
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E)
None of these
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Calculate the gravitational force between two bodies A and B having mass 80 kg each and situated at a distance of 100 cm from each other.
A)
\[4.3\times {{10}^{-15}}N\]
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B)
\[2.3\times {{10}^{-7}}N\]
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C)
\[4.3\times {{10}^{-7}}N\]
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D)
\[8.3\times {{10}^{-5}}N\]
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E)
None of these
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How much work is done, when a force of 200 N displaces a body by 30 m in the direction of applied force?
A)
6000 J
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B)
8000 J
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C)
4000 J
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D)
2000 J
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E)
None of these
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What is the work done by the force of gravity on a satellite moving around the earth?
A)
0
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B)
2400 J
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C)
36000 J
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D)
1000 J
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E)
None of these
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A driver accelerates his car first at the rate of \[1.8\text{ }m/{{s}^{2}}\]and then at the rate of\[1.2\text{ }m/{{s}^{2}}\]. The ratio of the two forces exerted by the engine in two cases will be:
A)
1 : 2
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B)
2 : 1
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C)
4 : 3
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D)
3 : 2
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E)
None of these
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What is the work to be done to increase the velocity of a car from 36 km/h to 72 km/h if the mass of the car is 1000 kg?
A)
50000 J
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B)
200000 J
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C)
150000 J
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D)
250000 J
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E)
None of these
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A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02s. If the speed of sound in salt water is\[1531\text{ }m/s\], how far away is the cliff?
A)
648 m
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B)
780.8 m
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C)
1025 m
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D)
2125 m
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E)
None of these
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The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes \[{}_{8}^{16}X\,\,and\,\,{}_{8}^{18}X\] in the sample?
A)
Percentage of \[{}_{8}^{16}X=80\] and percentage of \[{}_{8}^{18}X=20\]
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B)
Percentage of \[{}_{8}^{16}X=70\]and percentage of \[{}_{8}^{18}X=30\]
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C)
Percentage of \[{}_{8}^{16}X=90\]and percentage of \[{}_{8}^{18}X=10\]
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D)
Percentage of \[{}_{8}^{16}X=95\]and percentage of \[{}_{8}^{18}X=5\]
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E)
None of these
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