Which of the following is a force...? Mcqs

PPSC Past Papers

Latest MCQs

Which of the following is a force...?

(A) Heat
(B) Light

(C) Magnetism
(D) Kinetic

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Which reproduction performed by flowers...?

(A) Asexual Reproduction
(B) Binary Fission

(C) Sexual Reproduction
(D) Fragmentation

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Cow milk is a rich source of____________...?

(A) vitamin C
(B) vitamin B

(C) vitamin A
(D) vitamin K

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Carrot is good source of Vitamin _______...?

(A) Vitamin A
(B) Vitamin B

(C) Vitamin C
(D) Vitamin D

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The magnitude of force between two unit positive charges when the distance between them is 1m would be...?

(A) 0N
(B) 1N

(C) 2N
(D) Columbus Constant

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Head to tail rule can be used to add ______ forces....?

(A) Two
(B) Three

(C) Five
(D) Any number of

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The turning effect of force is called_________...?

(A) Moment
(B) Momentum

(C) Torque
(D) None of these

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Spinach leaves are rich source of________...?

(A) Amino acid
(B) Iron

(C) Vitamin E
(D) Carotene

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Hypocotyl hook is formed during the germination of...?

(A) Bean Seed
(B) Maize Seed

(C) Apple Seed
(D) None

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Phloem transport of sucrose can be described as going from “source to sink” which of the following would not normally function as a sink...?

(A) Mature leaf
(B) Storage organ

(C) Growing root
(D) Both B and C

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The source of oxygen in photosynthesis is...?

(A) water
(B) salts

(C) minerals
(D) glucose

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______ is not a renewable source of energy....?

(A) Solar energy
(B) Coal

(C) Wind energy
(D) Geothermal energy

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What force is involved when we rub our hands together to warm them in winter and when we rub a matchstick to ignite it...?

(A) Gravity
(B) Friction

(C) Electromagnetism
(D) Inertia

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The good sources of iodine are_______...?

(A) green leafy vegetables
(B) seeds

(C) fresh vegetables and fruits
(D) sea foods

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The day and night are formed due to 'Earth' rotation on its own axis from...?

(A) North to South
(B) South to North

(C) East to West
(D) West to East

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The weakest of all fundamental forces is the ________________...?

(A) Gravitational force
(B) Electrostatic force

(C) Magnetic force
(D) Nuclear force

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The type of reproduction which is necessary for evolution is _____...?

(A) Vegetative propagation
(B) Fragmentation

(C) Sexual reproduction
(D) Cloning

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Bond formed by mutual sharing of electron is ______...?

(A) Ionic bond
(B) Coordinate covalent bond

(C) Covalent bond
(D) Metallic bond

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When a substance is dissolved in a liquid and no new substance is formed. What will these substances are called...?

(A) Solute
(B) Solution

(C) Compound
(D) None

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The main source of energy in the stars is _____...?

(A) Chemical reaction
(B) Nuclear fission

(C) Nuclear fusion
(D) Mechanical energy

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Each stoma is formed by ______...?

(A) One guard cell
(B) Two guards cells

(C) Three guard cells
(D) Four guard cells

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_________ is the layer wherein most meteors are incinerated before reaching the surface....?

(A) Troposphere
(B) Stratosphere

(C) Mesosphere
(D) Ionosphere

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Which of the following is a rich source of Vitamin B-12...?

(A) Cashew nut
(B) Milk

(C) Apple
(D) Watermelon

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Zika virus was named after the Zika forest of which country...?

(A) Nigeria
(B) Angola

(C) Uganda
(D) Zimbabwe

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The direction of electric force and electric field intensity is ______...?

(A) Parallel to each other
(B) Perpendicular to each other

(C) Opposite to each other
(D) In any direction

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Sunlight is a Great Source of ____________...?

(A) vitamin C
(B) vitamin D

(C) vitamin E
(D) vitamin K

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Weather and climate are driven by what source(s) of energy ...?

(A) Earth’s internal heat
(B) Solar radiation

(C) Gravity
(D) Both (a) and (c)

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The most suitable unit for expressing nuclear radius is_______...?

(A) Angstrom
(B) Micro

(C) Nano meter
(D) Fermi

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If an opaque object is moved further away from the light source, the shadow gets _____...?

(A) Smaller
(B) Bigger

(C) Darker
(D) Lighter

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If force of 6N displaces an object 2m in the direction of force, then work done will be __________...?

(A) 0
(B) 12 Joule

(C) 3 Joule
(D) Both b and c

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The step-up transformer ______...?

(A) Increases the input current
(B) Increases the input voltage

(C) Has more turns in the primary
(D) Has less turns in the secondary coil

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what kind of soil is treated with gypsum to make it suitable for cropping______...?

(A) Alkaline
(B) Acidic

(C) Waterlogged
(D) Soil with excessive clay content

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The _____ is the largest natural source of light...?

(A) Sun
(B) Moon

(C) Star
(D) None of these

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Which statement is true for limiting frictional force...?

(A) It is greater than rolling friction
(B) It is greater than sliding friction

(C) It is greater than kinetic friction
(D) All are true

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The defect in which the image is formed beyond the retina is called...?

(A) Long-sightedness
(B) Blind spotting

(C) Short-sightedness
(D) Image defect

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All are sources of calcium except...?

(A) Red meat
(B) Green leafy vegetables

(C) Broccoli
(D) Nuts

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A pair of unlike parallel forces having different lines of force produce _______...?

(A) Equilibrium
(B) Torque

(C) A couple
(D) Unstable equilibrium

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Law of conservation of momentum defines that the total momentum of a system of two bodies before and after collision ______...?

(A) Remains constant
(B) Retains more momentum

(C) Losses some momentum
(D) None of the above is true

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The process which is essential for continuing and survival of species is _____...?

(A) Digestion
(B) Respiration

(C) Reproduction
(D) Excretion

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The process which is essential for continuing and survival of species is __________...?

(A) Digestion
(B) Respiration

(C) Reproduction
(D) Excretion

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Centrifugal force is always directed _____...?

(A) Towards centre
(B) Away from centre

(C) Along the circular path
(D) All sides

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A transformer works on the principle of _______________...?

(A) Self induction
(B) Mutual induction

(C) Generator
(D) Inverter

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The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________...?

(A) 1120 ft
(B) 120 ft

(C) 56 ft
(D) 100 ft

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All forms of energy that we use are ultimately transformed into__________...?

(A) Electrical Energy
(B) Heat Energy

(C) Light Energy
(D) Chemical Energy

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A force applied on a body through the string is called_________...?

(A) Weight
(B) Momentum

(C) Tension
(D) Torque

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The image formed in a compound microscope is_____________...?

(A) erect
(B) inverted

(C) sometimes erect, sometimes inverted
(D) none

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Common food sources of Vitamin A are:___________...?

(A) Milk, eggs, butter, cheese, cream, and liver
(B) White sugar, honey, and sugar cane

(C) Broccoli, apricots, cantaloupe, carrots, sweet potato, spinach
(D) Both A and C

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The ‘stone’ formed in human kidney consist mostly of_____________...?

(A) Calcium oxalate
(B) Sodium acetate

(C) Magnesium sulphate
(D) Calcium

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Instrument that measure the electric force ________...?

(A) Hygrometer
(B) Hydrometer

(C) Ammeter
(D) Voltmeter

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The good sources of Vitamin-B Complex are...?

(A) green leafy vegetables
(B) seeds

(C) fresh vegetables and fruits
(D) sea foods

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Nucleus is responsible for cell division because it contains nuclear material called...?

(A) Mitochondria
(B) Ribosomes

(C) Lysosomes
(D) Chromosomes

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Which of the following celestial bodies contains abundant quantities of helium-3, a potential source of energy...?

(A) Earth
(B) Venus

(C) Moon
(D) Saturn

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Which one is the world’s largest mangrove forest(s)...?

(A) Changa Manga Forest
(B) Amazon Forest

(C) Sundarbans Forest
(D) None of the above

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Which organelle contains thread-like structures that store chemical instructions for cell growth and function...?

(A) Mitochondria
(B) Ribosomes

(C) Chromosomes
(D) Lysosomes

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The point that lies directly above the source of an earthquake is known as _______________ ...?

(A) Earthquake Center
(B) Epicenter

(C) Gravitational Center
(D) Geological Center

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The only source of energy on earth is ____...?

(A) Moon
(B) Star

(C) Water
(D) Sun

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Force has _____...?

(A) Magnitude and Direction
(B) Velocity and Acceleration

(C) Mass and Volume
(D) Energy and Momentum

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The turn ratios of a transformer is 10. It means ______...?

(A) Is = 10 Ip
(B) Np - 10Ns

(C) Ns = 10 Np
(D) Vs = 10 Vp

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Which of these is NOT an example of a renewable energy source...?

(A) Wind energy
(B) solar

(C) Coal
(D) Hydroelectric power

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A telescope is an instrument that gathers _______ from distant sources....?

(A) Sound
(B) Light

(C) Heat
(D) Water

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Gravitational force is always ______...?

(A) Repulsive
(B) Attractive

(C) Both
(D) None of these

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When light strikes an opaque object, the light is blocked, thus a ________ is formed on the opposite side of the object....?

(A) Reflection
(B) Refraction

(C) Image
(D) Shadow

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A man pulls a crate of mass 25 kg across the leveled ground with a horizontal force of 60 N. A constant force of friction of 20 N acts on the sledge. What is the acceleration of the sledge...?

(A) 0.63 ms^-2
(B) 1.6 ms^-2

(C) 2.4 ms^-2
(D) 3.2 ms^-2

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Oranges are rich source of____________...?

(A) Carbohydrates
(B) Fats

(C) Proteins
(D) Vitamins

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Force per unit area is called _____...?

(A) Volume
(B) Density

(C) Velocity
(D) Pressure

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Liver uses which vitamin for creating new Red Blood cells...?

(A) B12
(B) B6

(C) A
(D) K

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A force that stops things from moving easily is known as:...?

(A) Fraction
(B) Friction

(C) Fission
(D) Flocculation

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If output voltage is greater than input voltage, then transformer is :...?

(A) Step up
(B) Step down

(C) Faulty
(D) None of These

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If the material recovers the original dimensions, when an external force is removed, this deformation is known as ______ deformation....?

(A) Inelastic
(B) Permanent

(C) Elastic
(D) Irreversible

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Particle clouds from where stars are formed are known as____________...?

(A) Stellar nurseries
(B) Star clouds

(C) Event horizons
(D) Singularities

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The natural source of hydrocarbon is:___________...?

(A) Crude oil
(B) Biomass

(C) Coal
(D) Carbohydrates

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Which among the following waves is used for communication by artificial satellites ...?

(A) Micro waves
(B) Radio waves

(C) A. M.
(D) Infra-red waves

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An image formed by a convex lens is called...?

(A) Real and Inverted
(B) Real and Upright

(C) Virtual and Inverted
(D) Virtual and Upright

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The radioactive isotopes are formed by neutrons bombardment on the nucleus, these incident neutrons must have ___ to penetrate in the nucleus....?

(A) Very high velocity
(B) Very low velocity

(C) Intermediate velocity
(D) All of these

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The volume of air remaining in the lungs even after forcible expiration is:...?

(A) total volume
(B) tidal volume

(C) residual volume
(D) none of the above

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The study of forces acting upon bodies in motion in the air is called__________...?

(A) Aeronautics
(B) Aerophysics

(C) Aerodynamics
(D) Aerofraction

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Sedimentary rocks are formed by natural process known as ...?

(A) Lithification
(B) Rejuvenation

(C) Hydration
(D) Peroxidation

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If an Opaque object is moved closer to the light source the shadow gets _______...?

(A) Smaller
(B) Very Smaller

(C) Bigger
(D) Older

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Fraction is a force which always opposes...?

(A) Gravity
(B) Motion

(C) Electromagnetism
(D) Inertia

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Which of these fruits develop from an inflorescence...?

(A) Apple
(B) Guava

(C) Pineapple
(D) Grape

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Which of the following is not the source of carbon dioxide emission...?

(A) Burning of fossil fuels, wood, cool
(B) Solar power

(C) Respiration
(D) Car exhaust smoke

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Fish is one of the best source of ______...?

(A) Protein
(B) Vitamin

(C) Mineral
(D) Carbohydrate

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Atmospheric pressure is the force (per unit-area) perpendicular to a unit-area of planetary surface, as determined by _________....?

(A) Mass of vertical column of atmospheric gases
(B) Mass of horizontal column of atmospheric gases

(C) Weight of vertical column of atmospheric gases
(D) Mass of vertical and weight of horizontal of atmospheric gases

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In which stage of mitosis chromosomes get attached to spindle fibers formed by two the centrioles...?

(A) Metaphase
(B) Anaphase

(C) Telophase
(D) Prophase

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A force is a ________ or a _______ that causes movement....?

(A) Pull, Twist
(B) Push, Pull

(C) Push, Lift
(D) Twist, Turn

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The image formed by a plane mirror is ______ in size to the object....?

(A) Smaller
(B) Larger

(C) Different
(D) Same

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In constructive reaction _____ molecules are formed....?

(A) Small
(B) Medium

(C) Equal
(D) Large

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If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire ______...?

(A) Increases
(B) Decreases

(C) Remains the same
(D) Will be zero

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Which type of bond is formed between H₂O molecules...?

(A) Hydrogen bond
(B) Ionic bond

(C) Covalent bond
(D) All of these

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Which mineral is makes red blood cells and it involved in oxygen transport and storage for energy conversions...?

(A) Magnesium
(B) Sodium

(C) Copper
(D) Iron

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The blurred image is formed in front of eyes due to ______...?

(A) Light focused in front of the retina
(B) Light focused behind the retina

(C) Light focused at a point on retina
(D) Light focused at a point beyond retina

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Deforestation will decrease...?

(A) Soil erosion
(B) Rainfall

(C) Landslides
(D) Soil fertility

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Average salinity or ratio of salt as per kilogram of water of ocean is__________...?

(A) 35 grams
(B) 55 grams

(C) 32 grams
(D) 42 grams

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If the electrostatic force between two electrons is F Newton, then the electrostatic force between two protons at the same distance is _____...?

(A) F
(B) 0N

(C) 2F
(D) 2/3 F

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The good sources of Vitamin-A are...?

(A) green leafy vegetables
(B) seeds

(C) fresh vegetables and fruits
(D) sea foods

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Gravitation force is ______ of the medium between the objects....?

(A) Dependent
(B) Independent

(C) Both 'a' and 'b'
(D) None of these

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What is the Unit of Force...?

(A) Newton
(B) Joule

(C) Watt
(D) Metre

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Which is the renewable source of energy...?

(A) Solar and wind
(B) Coal

(C) Natural gas
(D) Petroleum

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When two identical atoms share electron pairs and exert force on each other than bond form is ______...?

(A) Non-polar covalent bond
(B) Polar covalent bond

(C) Double covalent bond
(D) Coordinate covalent bond

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Which of the following is NOT a renewable energy source...?

(A) Solar energy
(B) Natural gas

(C) Hydro energy
(D) Wind energy

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A force can change all of the following of an object except...?

(A) Direction
(B) Mass

(C) Size
(D) Speed

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Which takes place when sex cells are divided and gametes are formed during the process of reproduction in humans...?

(A) Mitosis
(B) Respiration

(C) Meiosis
(D) Photosynthesis

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Unit of force in (SI) is __________...?

(A) Meter
(B) Newton

(C) Kilogram
(D) None of these

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Gravitation force of earth is___________...?

(A) 9.80 m/s²
(B) 7.21 m/s²

(C) 1.62 m/s²
(D) None of these

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According to Newton's law of universal gravitation force ∝ _______...?

(A) m1 m2
(B) 1/r2

(C) r2
(D) Both (a) and (b)

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What do friction forces between the air and a moving object cause...?

(A) Speed increase
(B) Weight decrease

(C) Resistance
(D) Energy gain

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For every two K⁺ that are actively transported inwards, how many Na⁺ are pumped out of the cell...?

(A) 1
(B) 2

(C) 3
(D) 4

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The major source of quick energy is ___________...?

(A) Carbohydrates
(B) Minerals

(C) vitamins
(D) None of these

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Basidiospores are considered to be a major source of ___________...?

(A) airborne allergens
(B) water borne allergens

(C) animal faeces
(D) bio-weapon

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The good sources of Vitamin-C are________...?

(A) green leafy vegetables
(B) seeds

(C) fresh vegetables and fruits
(D) sea foods

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Which of the following is a non-conventional source of energy:...?

(A) Coal
(B) Biogas

(C) Algae
(D) None of these

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The major source of quick energy for our body is...?

(A) Carbohydrates
(B) Mineral

(C) Vitamin
(D) Protein

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A truck has tyres of area 3 m^2. It puts a pressure of 4000 N/m^2 on the road. What is the weight of the truck (Hint: Weight =Force)...?

(A) 8000 N
(B) 12000 N

(C) 16000 N
(D) 20000 N

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Rainbow is formed due to ______...?

(A) Emission of light
(B) Absorption of light

(C) Refraction of light
(D) Transmission of sound

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If the direction of magnetic field is reversed, the direction of force is _____...?

(A) Reversed
(B) Not reversed

(C) May or may not reversed
(D) None of these

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In the normal human eye, the image is formed ______...?

(A) In from of the retina
(B) On the retina

(C) Behind the retina
(D) In between lens and retina

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Which statement is incorrect about the force...?

(A) Force can change the content of an object
(B) Force can change the shape of an object

(C) Force can change the direction of an object
(D) Force can change the speed of an object

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The day and night are formed due to 'Earth' rotation on its axis from...?

(A) North to south
(B) South to North

(C) West to East
(D) East to West

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Which one is not a renewable energy sources...?

(A) Oil and gas
(B) Solar energy

(C) Nuclear fuel
(D) Wind energy

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Desert, grassland, forest, highland, valley, urban, rural is/are an examples of...?

(A) Water Environments
(B) Land Environments

(C) Both A and B
(D) None

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Medium which sends signal from source to destination is known as ________ ...?

(A) Transmitter
(B) Transmission channel

(C) Receiver
(D) Hardware

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Celestial body that affects tides of Ocean is...?

(A) Sun
(B) Moon

(C) Galaxy
(D) Meteorites

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When oil and gas resources are burnt they kill many forests and lakes by ________________ ...?

(A) deforestation
(B) water pollution

(C) acid rain
(D) forest fire

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Red blood corpuscles are formed in the____________...?

(A) Liver
(B) Bone marrow

(C) Kidneys
(D) Heart

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Which of the following is an example for cantilever beam...?

(A) Diving board
(B) Bridge

(C) See-saw
(D) Common balance

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The light rays used for eliminating bacteria...?

(A) X-rays
(B) infrared rays

(C) microwave radiation
(D) ultra-violet radiation

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Which source contains the highest amount of iodine...?

(A) Milk
(B) Seaweed

(C) Eggs
(D) Fish

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