Science MCQs – List of Most Repeated NTS MCQs with Answers PAST PAPERS

List of Everyday Science MCQs for Test Preparation

Which is the outermost planet in the solar system? Neptune
The SI unit of charge is? Coulomb
Wavelength of very High Frequency (VHF) IS ? shorter
Long-sight defect could be corrected by using __________ lens? vonvex
For a fixed mass of gass at constant temperature, if we decrease volume, the pressure will _________? Increase
The lifespan of Red Blood Cells is __________ days? 20
The density of water is __________? 1 g/cm3
Radioactivity was discovered by __________? Bacquerel
The Sun is a __________? Star
The average adult has a blood volume of about __________ liters? 5
The most abundant element in the universe is __________? Hydrogen
The most abundant element in the Earth’s crust is ______? Oxygen
Each day human body breathe in ____ liters of air ? 15,000 to 20,000
The SI unit of “pressure” is _________? pascal
The most densest substance on the Earth is ________? Osmium
A camera uses a __________ to form an image? convex lens
CNG stands for? Compressed Natural Gas
Which from the following is true for “Sound”? Sound cannot travel through a vaccum
When white light is passed through a prism, it splits into _______ colours? 6
Instrument used for measuring very high temperature is __________.? Pyrometer
Sound waves are _________ waves? Longitudinal
The lifespan of White Blood Cells is __________ day(s)? 1
The fluid part of blood is known as __________? plasma
X-rays were discovered by __________? Rontgen
The speed of light is __________? 300,000 km/s
In a very low temperature which from the following will freeze at last? Sea water
The nearest planet to the Earth is _________? Venus.
The planet that moves round the Sun at the highest speed is? Mercury
In general, Comets have __________ orbits? Highly elliptical
Oxidation is a chemical reaction involving the __________? Loss of Electrons
The interior structure of the Earth is divided into ________ layers? 5
We live on the Earth’s? Crust
The thickest layer of the Earth is? Mantle
The Earth’s crust ranges from ________ km in depth.? 5-70
The anode is the electrode connected to the ________ terminal of a battery? Positive
1 tonne = ________ kg? 1000
The normal temperature of the body is? 4 degree
Weakest bone is? clavicle bone
Hardest bone is? collar bone
The hardest part of the body is? tooth
Most abundant element in the human body is carbon? Oxygen or calcium
Systole is heart? contraction
Eye is filled with ________ liquids? two
The femur is the longest? bone
Head or skull has? 29 bones
Total bones are? 206
Universal donor group is-O group
Life span of red blood cells is? 120 days.
The pH of the normal human body is Arteries? 4.
The Black Mamba is the fastest? Snake
New Zealand is close to Int? Date Line.
Temperature at earth’s core is? 2000 deg: C
Sun is 400 times larger than the? Moon
When are you most likely to see a penumbra? During an Eclipse.
A wind which reverses seasonally is? Wind
Oceans are on average? 4 km deep.
Which electromagnetic wave has the shortest wavelength? Gamma rays
All electromagnetic waves have the same? Speed in vacuum
. The reflection of sound is called? Echo
An instrument used to measure electric current is called? Ammeter
Tibia is a bone found in the____________? Leg
What is the main component of bones and teeth? Calcium phosphate
Which gland in the human body is called the master gland? Pituitary
The main constituent of hemoglobinis___________? Iron
Which is the largest organ in the human body? Skin
Medulla oblongata is a part of human ___________? Brain
Water has maximum density at____________? 4°C
The theory of Expanding Universe was first propounded by____________? Hubble
The biggest species of the cat family is___________? Tiger
Which group of animals hasheterogametic females? Domestic fowl
Who proposed this concept “All motion is relative”? Albert Einstein
Which month of the calendar year can lack a new moon? February
The sunlight can reach a depth of___________meters in the ocean? 100
Geiger-Muller counter is used to detect__________? Protons
The autonomic nervous system innervate all of these except? Skeletal muscles
Vacuum tubes have been replaced by__________? Transistors
The number of electrons of a neutral atom is automatically known if one knows the? Atomic number
_________ is anything that takes up space and has mass.? Matter
What are considered the building blocks of matter? Atoms
The protons and neutrons are found in the center of the atom, which is called the ___of the atom? Nucleus
The speed of light is __________?300,000 km/s
The term ‘Computer’ is derived from__________? Latin
Who is the father of Computer? Charles Babbage
Who is the father of the Internet? Vint Cerf
If a computer has more than one processor then it is known as__________? Multiprocessor
The brain of any computer system is___________? CPU
The computer that process both analog and digital is called_____?Hybrid computer
ALU is____________? Arithmetic Logic Unit
RAM Stands for _____? Random Access Memory
Software is ______? Untouchable Part
The SI unit of thermodynamic temperature is? Kelvin
The shortest distance between crest to crest is called? Wavelength
The speed of sound is fastest in? Gasses
. The branch of science which study the interaction between matter and radian energy is called? Spectroscopy
. The horizontal rows of the periodic table are called? Periods
The vertical columns of the periodic table are called? Groups
Which metallic element is liquid at room temperature? Mercury
Which non-metallic element is liquid at room temperature? Bromine
Battery charger converts electrical energy into ___energy? Chemical
A loudspeaker changes ________ energy into sound energy? Electrical.
The strongest part(s) of a magnet is/are? North and south pole
When gas is ionized, ________ forms. ? Plasma
Wind is caused by? Difference in atmospheric pressure
Wind speed is measured by? Anemometer
The fact that universe is expanding was discovered by? Hubble
X-rays were discovered by? Roentgen
The Nobel prize in physics for the discovery of the law of photoelectric effect was awarded to? Einstein
The symbol of gold is? Au
Plaster of Paris is produced by heating? Gypsum
Which from the following is NOT true about Helium gas? Toxic
Which is the largest excretory organ of the body? skin
The brain is enclosed in a bony case called? cranium
Which is the bone that is present in forelimb? radius
Which one is herbivore? cow
Which structure helps in transport of water in plants ? xylem
The organisms that can make their own food are called ? producers
Bacteria are ? prokaryotes
Bile juice is secreted by? gall bladder
DNA structure was first described by? Watson and Crick
Pollination is best defined as the transfer of pollen from an anther to? stigma
Unit of electricity ―Kilowatt Hour
Excessive burning of fossil fuels causes? acid rains.
Newton is the unit of ? Force
Richter scale measures the severity of? Earthquake
Planet Mars has two? Moon
Our eye is very sensitive to? blue light
Rich source of energy in seimen is? glucose
Sickle cell anemia was discovered by ? Vernon Ingram
Kangaroo has an abdominal pouch known as ? marsupial
The utilization of the products of digestion is called? assimilation
Parabronchi are present in ? birds
The respiratory problem most common in smokers is? emphysema
Water potential of pure water is? zero
Bean-shaped cells in plants are ? guard cells
The normal pH of human blood is ? 4
Shrinkage of protoplast due to exosmosis of water is? plasmolysis
Atherosclerosis is a major condition leading to? heart attack
Villi and microvilli increase ? absorption
Splitting of glucose relates to? glycolysis
. Reptiles hibernate during? winter
Which of the following plants are called arthrophytes? sphenopsids
Radio carbon dating is used to find the age of? Fossils
Seismology is the science of ? Earthquakes
The source of solar energy is ? Nuclear energy
fan object is placed midway between two parallel plane mirrors facing each other, then the number of images that appear in mirrors is? Infinite
In a vacuum , What will be common among X rays visible light, radio waves ? Amplitude
Barometer is used to measure? Atmospheric pressure
If u use a microscope to watch smoke particles in still air, you will see them moving about all the time. This phenomenon is called? Brownian movement
The mass of a neutron is approximate? Equal to the mass of a proton
The spherical shape of raindrops is due to ? Atmospheric friction of air
Galvanometer is an instrument For measuring currents of small? magnitude
Which of the following has highest frequency? Gamma rays
Most important effect of moon on earth is that? Gives light
The term ” Meteor” is applied to an interplanetary body, After it enters the earth? atmosphere
Newton`s rings are Coloured rings observed around the point of contact of a ? convex lens
The heat recieved by earth from the sun is known as? Solar radiation
Constellations referred to as Zodiac are ? Imaginary region that encompasses the path of the planets
The height of a geostationary satellite from the surface of the earth is about ? 3600 km
What are the three basic units of measurement for the metric system? Metre, liter and gram
Clocks, which moves with the velocities comparable with the velocity of light, run? with zero velocity
When a gas turns into a liquid, the process is called? condensation
Electric current is measured by ? Ammeter
Dim-vision in the evening and night results from the deficiency of which one of the following? Vitamin A
Diffusion of light in the atmosphere takes place due to ? Dust particles
Dental caries are due to ? Bacterial infection
The process of digestion begins in? mouth
The planet nearest to sun is ? Mercury
Blood cells are manufactured by _________of the body? bone marrow
If an object gives off its own light, it is said to be? luminous
An electric heater would be most likely to produce? R Radiations
The Kelvin scale of temperature is called the? absolute scale.
The type of radiation that is unaffected by the magnetic field is called? Gamma Rays.
In a normal resting man, the rate of heart beat is? 72 per minute.
The brightest planet is ? Venus.
Gas in children‘s play-balloons going upward is? hydrogen.
A study of the chemical composition of the earth‘s crust is called? Geology
In a heat engine heat energy is changed into ? Mechanical Energy
Frequency of audible sound is ? 20-20KHz.
Cheapest source of producing electricity is? Wind and Solar
The smallest unit of measurement of wavelength is? nanometers (10^-9 m)
Constellation is Configuration of fixed stars? resembling a figure
Which of the following part of the atmosphere is nearest to the earth? Troposphere
To an astronaut in space sky looks ? Black
Water is heated in a kettle. The inside water is heated by convection. A person sitting near the fire receives heat by ?Convection
A time can come when we will be able to design a machine which can go on working for ever without the expenditure of energy. Is it possible ? No
Light year is a unit of ? Distance
Three elements needed for the healthy growth of plants are ? N, P, K
Copper can be converted into gold by ? Artificial Radioactivity
In winter an iron pipe feel colder than a wooden window, This is because wood is ? non-Conductor
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 ? 56fft
It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the? pitch
When a ray of sunlight enters a dark room, its straight path becomes visible because of dust particles hanging in the air. It is because the light is? Visible
A six feet tall lady wants to see her full image in a plane mirror. The minimum length of the mirror will be? 3 feet
The principle used in radar is the same as that of Sonar. In radar we use radio waves whereas in sonar we use? Ultrasonic
a fission nuclear reaction, a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ? Fusion nuclear reaction
Parsec is a unit of ? Distance
German Silver is an alloy of ? Cu + Ni
The Continent Antarctica lies at the? South pole
The temperature of the dead body is? the temperature of the place where it is kept
Lactometer is a type of Hydrometer which is used to measure the specific gravity of ? Milk
The deepest place on earth is ? Mariana Trench
Twinkling of stars is caused by ? refraction of light
Magnifying power of a simple microscope can be increased by ? the increasing focal length of the lens
What is the approxiate mean distance that separates the sun from the earth? 1480,00,000 km
The outer surface of the sun is called ? Photosphere
Which planet has the maximum number of satellites? Jupiter
What is a light year? The distance traveled by light in 1 year.
What are asteroids? Very small planet revolving around the sun
What is the temperature at the center of the sun? 20 million k
The phase of the moon are partially the result of the? Revolution of the moon about the earth
Astronomers cannot be nominated for the? Noble Prize.
Modern Bicycle was invented? by Staley.
Coulomb is the unit of? Electric Charge.
The fat content in buffalo milk is? 10%
The large plates of solar panels are painted? Black.
The major component of honey is? Glucose.
Severe deficiency of Vitamin D results in? rickets
Digestion of food is completed in the? small intestine
Wind energy is the _____energy? Kinetic
One of the countries through which equator passes is____? Kenya
A person with the following blood group are considered to be a universal recipient? AB+
The name of the common mineral salt present in sweat is? Sodium Chloride
Role of biotechnology in the production of food based on_____? Fermentation
The hygrometer is used for measuring the? Humidity of air
The chemical name of vinegar is? Dilute acetic acid
The orbital period of the planet Mercury around the sun is? 88 days
Television signals are converted into light signals by? Photodiode
The number of spark plugs needed in a diesel engine is?
The half-life of a radioactive element is 8-days. How long it takes to reduce it from 10 mg to 5 mg? 8 days
In humans, most nutrient molecules are absorbed by the? stomach
Sedimentary rocks are? Porous
Oasis is associated with? Desert
The Continent Antarctica lies at the__________? South pole
When a ray of sunlight enters a dark room, its straight path becomes visible because of dust particles hanging in the air. It is because light is_________? Visible
The temperature of the dead body is_______________? Temperature of the place where it is kept
A six feet tall lady wants to see her full image in a plane mirror. The minimum length of the mirror will be? 3feet
The principle used in radar is the same as that of Sonar. In radar, we use radio waves; whereas in sonar we use? Ultrasonic
The deepest place on earth is____________? Mariana Trench
A body can escape the gravitational pull of the earth if it is thrown up with a velocity of? 7 miles per sec
Night vision is possible with the help of___________? Infrared Rays
Movement of the cell against concentration gradient is called ? active transport.
One of the following is not a function of bones protein ? synthesis
Plants absorb most part of water needed by them through their ? root hairs
Highly intelligent mammals are ? dolphin
Process of cell division take place by mitosis.
Pulses are a good source of ? proteins
Plants that grow in dry habitat are called ? xerophytes
The simplest amino acid is ? glycine
Accumulation of lipid molecules in brain cells lead to ? mental retardation
The life and activities of a cell is controlled by? nucleus
Flagella are composed of ? microtubules
Tobacco mosaic virus was crystallized by ? Stanely
Non-enveloped naked viruses are known as ? virions
Gram +ve bacteria on treatment with crystal violet dye give colour? purple
Malarial parasite is injected into man as ? sporozoites
The terms procariotique and eucariotique were proposed by ? Chatton
The most common type of asexual reproduction in the fungi is? spore production
Outside the thallus of Marchantia there are special structures called ? rhizoids
The vascular plants are termed as? tracheophytes
In human beings influenza is caused by? virus
In many which phylum the body of organisms is usually divided in? three regions
called head, thorax, and abdomen? arthropods
. Amoeba moves in water with the help of locomotory organs called ? pseudopodia
In all coelenterates, endoderm give rise to? digestive system
Higher vascular plants are also called ? seed plants
The plants which produce embryo but lack vascular tissues and seeds are placed in ? bryophytes
Which bone is called beauty bone in women ? clavicle
Detachment of myosin head and actin in rigor mortis occurs due to ? autolysis in body
Release of the ovum from the ovary is called? ovulation
The foetus is protected from the mechanical damage by the? amniotic fluid
The battery was invented by? Volta
The nearest planet to the Sun is? Venus
Bronze is an alloy of? Copper, Tin
Neutrons were discovered by? James Chadwick
Nucleus was discovered by? Rutherford
Energy can be converted from one form to another, but all energy ends up as? Heat energy
A battery converts ________ into electrical energy? Chemical energy
Current is the flow of? Electrons
Electrons were discovered by? J. Thomson
Between the melting point and boiling point of a substance, the substance is a? Liquid
Urine is produced in __________? Kidneys
Blood is cleaned by __________? Kidneys
The planet which is easily visible from the Earth is? Venus
According to the Big Bang Theory, the Universe began about __________ billion years ago? 10 – 20
The biosensor is used to measure? Blood glucose level
Einstein’s famous equation which states that mass and energy are interchangeable is? E = mc2
The SI unit of electric current is? Ampere
For proper formation of teeth, __________ is essential.? Fluorine
The Carbon Dioxide in the atmosphere, by volume, is? 03%
Diamond is an allotropic form of? Carbon
The SI unit of Heat is? Joule
The gas, commonly known as “laughing gas”, is? Nitrous Oxide
The energy value of food is measured in? Joule
Water covers __________ of the Earth’s surface? 70%
The fourth state of matter is? Plasma
The device used to convert Alternate Current into Direct Current is called? Rectifier
The number of oscillations per second is called? Frequency
Sound waves from a loudspeaker are caused by? Vibrations
There are __________ methods of heat transfer? 3
The unit used to measure ‘magnetic flux’ is? Weber

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