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Everyday Science MCQs Mega Collection 1


When a gas turns into a liquid, the process is called
(a) Condensation ✓
(b) evaporation
(c) deposition
(d) sublimation

Which of the following elements is a metal?
(a) S
(b) Se
(c) I
(d) Ga ✓

Oranges are rich source of
(a) Carbohydrates
(b) Fats
(c) Proteins
(d) Vitamins ✓

Most plant and animal cells are similar in some respects since they both have in common
(a) Cytoplasm and cellulose
(b) Cytoplasm and contractile vacuole
(c) Cytoplasm and nucleus ✓
(d) Membrane and cell wall

Lamarck's theory of inheritance of acquired characters was challenged by
(a) August Weismann ✓
(b) Hugo De Vries
(c) Herbert Spencer
(d) Carl Linnaeus

Iodised salt is useful for men because it
(a) Improves digestion ✓
(b) Increases resistance to diseases
(c) Controls the thyroid gland
(d) Slows down ageing process

In which layer of the atmosphere do most weather phenomena occur?
(a) Exosphere
(b) Stratosphere
(c) Ionosphere
(d) Troposphere- ✓


In the HINI Virus what does the alphabet H and N stands for: I H stands for haemagglutinin II N stands for neuraminidase
(a) Only I is correct
(b) Only II is correct
(c) Both are correct- ✓
(d) Both are incorrect

In the context of genetic disorders, consider the following:
A woman suffers from colour blindness while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probably correct? [UPSC 2009(CS-P)1
(a) Both children suffer from colour blindness.
(b) Daughter suffers from colour blindness while son does not suffer from it.
(c) Both children do not suffer from colour blindness.
(d) Son suffers from colour blindness while daughter does not suffer from it ✓

In the context of CO2 emission and Global Warming, what is the name of a market driven device under the UNFCC that allows developing countries to get funds/incentives from the developed countries to adopt, better technologies that reduce greenhouse gas emissions? [UPSC 2009(CS-P)1
(a) Carbon Footprint
(b) Carbon Credit Rating ✓
(c) Clean Development Mechanism
(d) Emission Reduction Norm


In the context of alternative sources of energy, ethanol as a viable bio-fuel can be obtained from
(a) Potato
(b) Rice
(c) Sugarcane ✓
(d) Wheat

In making the saffron spice, which one of the following parts of the plant is used?
(a) Leaf
(b) Petal
(c) Sepal
(d) Stigma ✓

In higher pair, the relative motion is
(a) Purely turning
(b) Purely sliding
(c) Purely rotary
(d) Combination of sliding and turning ✓

Electric current is measured by
(a) Voltmeter
(b) Anemometer
(c) Commutator
(d) Ammeter ✓

Dim-vision in the evening and night results from the deficiency of which one of the following?
(a) Vitamin A ✓
(b) Vitamin E
(c) Vitamin B12
(d) Vitamin C

Diffusion of light in the atmosphere takes place due to
(a) Carbon dioxide
(b) Dust particles ✓
(c) Helium
(d) Water vapours

Dental caries are due to
(a) Viral infection
(b) Contaminated water
(c) Bacterial infection ✓
(d) Hereditary causes

Consider the following statements:
1. Dinosaurs roamed the earth during the Mesozoic era.
2. All Dinosaurus and other reptiles such as Ichthyosaurus and Pterosaurus. became extinct due to unknown reasons in Triassic period.
Which of the statements above given is / are correct?
(a) 1 only ✓
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

Consider the following statements:
1. Cigarette smoking exposes a person to benzene.
2. Benzene is known carcinogen.
Which of the statements given above is / are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2 ✓
(d) Neither 1 nor 2

Consider the following statements:
1. Sweet orange plant is propagated by grafting technique.
2. Jasmine plant is propagated by layering technique.
Which of the statements given above is/are correct? [UPSC 2009(CS-P)1
(a) 1 only
(b) 2 only
(c) Both 1 and 2 ✓
(d) neither 1 nor 2


Consider the following:
1. Camphor
2. Chicory
3. Vanilla
Which of the above is/are plant product(s)?
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3 ✓

'Bottle neck inflation' means
(a) No rise in prices despite increase in aggregate demand
(b) Rise in prices without increase in the aggregate demand ✓
(c) Decline in prices due to increase in aggregate demand
(d) None of these

Biological Oxygen Demand (BOD) is used as a standard measure of .
(a) Oxygen level in forest system
(b) Oxygen level in animals
(c) Oxygen level in water system ✓
(d) Oxygen level in atmosphere

An eclipse of the Sun takes place
(a) Once in every year
(b) When the moon is full
(c) When the moon passes between the sun and the earth ✓
(d) When earth comes between the sun and the moon

Among the following, the richest source of protein is
(a) Ground Nut ✓
(b) Rice
(c) Potato
(d) Apple

All electioneering campaigns during the time of elections are stopped.
(a) 48 hours before the appointed time of election results
(b) 48 hours before the actual poll
(c) 24 hours before the actual poll
(d) 36 hours before the actual poll ✓

AIDS stands for
(a) Acquired Immune Disease Syndrome
(b) Acquired Immunity Deficient Syndrome
(c) Acquired Immune Deficiency ✓
(d) Acquired Infection Deficiency Syndrome

Activity of brain is recorded by
(a) ECG
(b) EEG ✓
(c) MET
(d) CT

Acquired Immune Deeiciency Syndrome (AIDS) is caused by
(a) bacterium
(b) protozoa
(c) fungus
(d) virus ✓

A term associated with the comparison of processing speed is
(a) FFTS
(b) MPG
(c) MIPS ✓
(d) CPS


Consider the following:
1. Camphor
2. Chicory
3. Vanilla
Which of the above is/are plant product(s)?
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3 ✓

'Bottle neck inflation' means
(a) No rise in prices despite increase in aggregate demand
(b) Rise in prices without increase in the aggregate demand ✓
(c) Decline in prices due to increase in aggregate demand
(d) None of these

Biological Oxygen Demand (BOD) is used as a standard measure of .
(a) Oxygen level in forest system
(b) Oxygen level in animals
(c) Oxygen level in water system ✓
(d) Oxygen level in atmosphere

An eclipse of the Sun takes place
(a) Once in every year
(b) When the moon is full
(c) When the moon passes between the sun and the earth ✓
(d) When earth comes between the sun and the moon

Among the following, the richest source of protein is
(a) Ground Nut ✓
(b) Rice
(c) Potato
(d) Apple

All electioneering campaigns during the time of elections are stopped.
(a) 48 hours before the appointed time of election results
(b) 48 hours before the actual poll
(c) 24 hours before the actual poll
(d) 36 hours before the actual poll ✓

AIDS stands for
(a) Acquired Immune Disease Syndrome
(b) Acquired Immunity Deficient Syndrome
(c) Acquired Immune Deficiency ✓
(d) Acquired Infection Deficiency Syndrome

Activity of brain is recorded by
(a) ECG
(b) EEG ✓
(c) MET
(d) CT

Acquired Immune Deeiciency Syndrome (AIDS) is caused by
(a) bacterium
(b) protozoa
(c) fungus
(d) virus ✓

A term associated with the comparison of processing speed is
(a) FFTS
(b) MPG
(c) MIPS ✓
(d) CPS


A plant leaf appear to green because it
(a) absorbs green light
(b) reflects all but yellow and green light
(c) reflect green light ✓
(d) absorbs red and yellow light

A periscope works by the principle of
(a) Refraction
(b) Total Internal reflection ✓
(c) Diffraction
(d) Reflection and refraction

A mixure of solid Al2O3 and Fe2O3 can be separated by the method of
(a) Forth floatation
(b) Magnetic separation ✓
(c) Gravity separation
(d) Dissolving in Water

A hollow cylindrical rod is filled with air, to make it a resonance column. To produce a
wave of length 48 cm the minimum length of rod should be
(a) 12 cm
(b) 24 cm ✓
(c) 48 cm
(d) 96 cm

Which of the following is most likely to cause a rise in the average temperature of the Earth in the future?
(a) Atomic warfare
(b) CO2 from fossil fuels ✓
(c) Dust clouds from volcanoes
(d) Depletion of the Earth's Ozone layer

A healthy freshwater fish is placed in saltwater. The expected consequence of this would be that
(a) the fish becomes dehydrated and dies ✓
(b) the fish becomes bloated and dies
(c) the fish suffers from fungal or bacterial disease and dies
(d) ther is no observable effect on the fish provided there is sufficient food

A difference of 1 degree in longitude at the Equator is equivalent to nearly
(a) 101 km
(b) 111 km ✓
(c) 121 km
(d) 125 km

A cell cycle consists of
(a) mitosis and meiosis
(b) G1, the S phase, and G2
(c) Prophase, metaphase, anaphase and telophase
(d) Interphase and mitosis ✓

Which of the following poses the greatest safety risk when heated in laboratory?
(a) A mixture of iron and sulfur
(b) mercury(II) oxide ✓
(c) Sodium chloride
(d) Copper(II) sulfate hydrate

A boy has five resistance of 1/5 ohm each. The maximum resistance that can be formed with them is
(a) 0.5 ohm
(b) 1 ohm ✓
(c) 1/25 ohm
(d) 1/5 ohm


A bat is
(a) a mammal ✓
(b) a reptile
(c) an amphibian
(d) an avian

A "clinical death" take place when
(a) there is no pulse
(b) there is no heart beat
(c) pupils are fixed and dilated, and there is no reaction to light
(d) all the three conditions are present together ✓

Vacuoles are bound by a definite membrane in plant cells called
(a) Plasma membrane
(b) Tonoplast ✓
(c) Cell wall
(d) None of the above

Titan is the largest natural satellite of planet
(a) Mercury
(b) Venus
(c) Saturn ✓
(d) Neptune

Thermometer is related to degree in the same way as clock is related to
(a) Wall
(b) Tower
(c) Hour ✓
(d) Cock

There are rings around which of the following?
(a) Uranus
(b) Mars
(c) Jupiter
(d) Saturn ✓

There are how many strains of H & N proteins that cumulatively make up the HN breed of flu virus (eg. being the presently famous H1N1 virus)
(a) 16 & 9 respectively ✓
(b) 9 & 16 respectively
(c) 16 & 16 respectively
(d) 9 & 9 respectively

The wonder pigment chlorophyll is present in
(a) Mitochondria
(b) Centrosomes
(c) Quantosomes ✓
(d) Lysosomes

The vestiges of hind limbs are present in
(a) Cobra
(b) Sea snake
(c) Krait
(d) Python ✓

The use of which of the following devices has given the modern biologist a better insight into the internal structure of cells
(a) Computer
(b) Electron microscope ✓
(c) Spectrophotometer
(d) Ultracentrifuge


The two diseases that most often kill AIDS victims are
(a) Kaposi's sarcoma
(b) Lymphangioma
(c) Pneumocystis carinii pneumonia
(d) Systemic Lupus erythromatosus

The theory which advocates that living beings can arise only from other living beings is termed
(a) Bio-genesis ✓
(b) Abiogenesis
(c) Catastrophism
(d) Cosmozoic

The theory that all animals and plants are made up of cells and they could arise only from pre-existing cells was propounded by
(a) Robert Hooke
(b) Matthias Schneider and Theodore Schwann ✓
(c) Purkinje
(d) Leuwenhoek

The theory of use and disuse was used to explain evolution by
(a) Lamarck ✓
(b) Darwin
(c) De Vries
(d) Wallace

The terms Lubb and Dubb relate to which one of the following?
(a) Heart ✓
(b) Eyes
(c) Teeth
(d) Lungs

The term 'epicentre' is associated with
(a) Earthquakes ✓
(b) Tornadoes
(c) Cyclones
(d) Earth's interior

The speed of light with the rise in the temperature of the medium
(a) Increases
(b) Decreases
(c) Remains unaltered ✓
(d) Drops sharply

The solenocytes of Platyhelminthes, the nephridium of Annelids, and the kidneys of Vertebrates all have a similar function of excretion by differ in origin. They are said to be
(a) Analogous ✓
(b) Homologous
(c) Adaptational
(d) Vestigeal

The solar eclipse occurs when
(a) the sun comes in between the moon and the earth
(b) the earth comes in the between the sun and the moon
(c) the moon comes in between the sun and the earth ✓
(d) None of these

The smallest functional and structural unit of kidney is called as
(a) Neuron
(b) Nephron ✓
(c) Granulocyte
(d) Reticulocyte


The removal of top soil by water or wind is called
(a) Soil wash
(b) Soil erosion ✓
(c) Soil creep
(d) Silting of soil

The power of lens is - 2D. What is its focal length?
(a) 2m
(b) 0.5m
(c) 1.0m
(d) 0.5m ✓

The Panda belongs to the same family as that of [UPSC 2009(CS-P)]
(a) Bear ✓
(b) Cat
(c) Dog
(d) Rabbit

The oxide of Nitrogen used in medicine as anaesthetic is
(a) Nitrogen dioxide
(b) Nitric oxide
(c) Nitrous oxide
(d) Nitrogen pentoxide ✓

The modern synthetic theory of organic evolution is a synthesis of theories proposed by
(a) Lamarck and Darwin
(b) Lamarck and De Vries
(c) Darwin and De Vries ✓
(d) None of the above

The marine animal called dugong which is vulnerable to extinction is a/an[UPSC 2009(CS-P)]
(a) Amphibian
(b) Bony fish
(c) Shark
(d) Mammal ✓

The leaf blight of paddy is caused by
(a) Bacteria ✓
(b) Virus
(c) Nematodes
(d) Fungus

The intencity of Earthquakes is measured on
(a) Richter scale ✓
(b) Secant scale
(c) Mercalli scale
(d) Beaufort scale

The injection of anti-toxin is given to prevent
(a) Tetanus ✓
(b) Tuberculosis
(c) Typhoid
(d) Filariasis

The hardest substance available on earth is
(a) Platinum ✓
(b) Diamond
(c) Quartz
(d) gold


The general direct flow of summer monsoon in India is .
(a) From South to North
(b) From South West to South East ✓
(c) From South East to South West
(d) From South West to North East

The gas predominantly responsible for global warning is
(a) Carbon dioxide ✓
(b) Carbon monoxide
(c) Nitrous oxide
(d) Nitrogen peroxide

The dynamo is a device for converting
(a) Heat energy into electrical energy ✓
(b) Mechanical energy into electrical energy
(c) Magnetic energy into electrical energy
(d) None of these

The disease diphtheria affects
(a) Lungs
(b) Intestine
(c) Throat ✓
(d) Body joints

The concept of carbon credit originated from which one of the following?
(a) Earth Summit, Rio de Janeiro
(b) Kyoto Protocol ✓
(c) Montreal Protocol
(d) G-8 Summit, Hciligendamm

The cell th
at lacks a nucleus is
(a) Flame cell
(b) Spermatozoan
(c) Red blood corpuscles in man ✓
(d) White blood corpuscles

The blue colour of the clear sky is due to
(a) Diffraction of light
(b) Dispersion of light
(c) Reflection of light
(d) Refraction of light ✓

The animal which uses sounds as its 'eyes' is
(a) Dog
(b) Cat
(c) Snake
(d) Bat ✓

Thalassaemia is a hereditary disease affecting .
(a) Blood ✓
(b) Lungs
(c) Heart
(d) Kidney

Stem cuttings are commonly used for re-growing
(a) Cotton
(b) Banana
(c) Jute
(d) Sugar Cane ✓


Stainless steel is an example of
(a) A metallic compound ✓

(b) A homogeneous mixture
(c) A heterogeneous mixture
(d) An inorganic compound

Spontaneous generation signifying the development of living organisms from nonliving has been termed
(a) Biogenesis
(b) Abiogenesis ✓
(c) Cosmozoic
(d) Catastrophism

Spinach leaves are rich source of
(a) Vitamin A
(b) Iron ✓
(c) Carotene
(d) Vitamin E

Small pox is caused by
(a) Bacteria
(b) Fungus
(c) Virus ✓
(d) Algae

Silk is produced by
(a) Egg of silkworm
(b) Pupa of silkworm
(c) Larva of silkworm ✓
(d) Insect itself

Select the one which is not a mixture
(a) Air
(b) Gasoline
(c) LPG
(d) Distilled water-

Researchers from Columbia Initiative in Systems Biology recently discovered two genes, C/EPB and Stat3, responsible for the most aggressive forms of human
(a) Hepatitis B
(b) AIDS
(c) Blood Cancer
(d) Brain cancer ✓

Regarding the atom of a chemical element, the magnetic quantum number refers to
(a) Orientation ✓
(b) shape
(c) size
(d) spin

'Ratti' used by jewellers is obtained from seed of a
(a) Gymnospermous plant
(b) Angiospermous plant ✓
(c) Algae
(d) Fungi

Polythene is industrially prepared by the polymerization of .
(a) Methane
(b) Styrene
(c) Acetylene
(d) Ethylene ✓


Plant cells can usually be distinguished because only plant cells possess
(a) Cell walls and mitochondria
(b) Golgi bodies and central vacuoles
(c) Cell walls and central vacuoles ✓

(d) Chromosomes and mitochondria

Persons with which blood group are called universal donors?
(a) AB
(b) A
(c) O ✓
(d) B

Workers of paint industry are exposed to which one of the following hazards?
(a) Nickel pollution
(b) Cadmium pollution
(c) Strontium pollution
(d) Lead pollution ✓

With reference to the work of human kidney, consider the following statement:
1 After the waste is remove in the kidney, the clear blood is sent back through renal artery.
2. From Bowman's capsule, the filtered liquid passes through tiny tubes where much of the gluclose is reabsorbed and sent back to the blood in the renal vein. Which of the following is/are correct?
(a) Only 1.
(b) Only 2.
(c) Both 1 & 2
(d) Neither 1 nor 2 ✓

With reference to the evolution of living organisms, which one of the following sequences is correct?
(a) Octopus - Dolphin - Shark
(b) Pangolin - Tortoise - Hawk
(c) Salamander - Python – Kangaroo ✓
(d) Frog - Crab - Prawn

With reference to normal human beings consider the following statements:
1. In response to the presence of HCL, secretin is produced from the duodenum.
2. Enterogastrone is produced in the small intestine in response to the presence of fatty acids.
Which of the statements is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 & 2 ✓
(d) Neither 1 nor 2

Winds and air currents differ in the aspect that
(a) air currents blow much faster than winds
(b) air currents are always moisture laden while winds are usually dry
(c) the winds blow on lands while air currents blow over seas and oceans
(d) winds are horizontal movements of air while air currents are the vertical movements of air ✓

WiMAX is related to which one of the following?
(a) Biotechnology
(b) Space technology
(c) Missile technology
(d) Communication technology ✓

Why is it difficult to see through fog?
(a) Rays of light suffer total internal reflection from the fog droplets
(b) Rays of light are scattered by the fog droplets ✓
(c) Fog droplets absorb light
(d) The refractive index of fog is extremely High

Who was the first scientist to use an instrument for biological studies in 1665?
(a) Robert Hooke ✓
(b) Schwann
(c) Schleiden
(d) None of the above


Who of the following scientists proved that the stars with mass less than 1.44 times the mass of the Sun end up as White Dwarfs when they die?
(a) Edwin Hubble
(b) S. Chandrashekhar ✓
(c) Stephen Hawking
(d) Steven Weinberg

Who gave the first evidence of the Big-Bang theory?
(a) Edwin Hubble ✓ 
(b) Albert Einstein
(c) S. Chandrasekhar
(d) Stephen Hawking

Which onr the following is the most effective carrier for communications?
(a) Cables
(b) Microwaves ✓
(c) Optical fibres
(d) Radiowaves

Which one of the following types of waves are used in a night vision apparatus?
(a) Radio waves
(b) Microwaves
(c) Infra-red waves ✓
(d) None of the above

Which one of the following statement is NOT correct?
(a) Milk contains none of the B-vitamins ✓
(b) Vitamin-A (retinal) deficiency leads to dry and scaly skin
(c) One of the symptoms of scurvy is pain in the joints
(d) Vitamin-B, (thiamine) deficiency can lead to heart failure

Which one of the following planets has largest number of natural satellites or moons?
(a) Jupiter ✓
(b) Mars
(c) Saturn
(d) Venus

Which one of the following is used as an explosive?
(a) Phosphorus dichloride
(b) Mercuric oxide
(c) Graphite
(d) Nitroglycerine ✓

Which one of the following is responsible for blue baby syndrome?
(a) Fluoride
(b) Nitrate ✓
(c) Arsenic
(d) Lead

Which one of the following is not a radioactive element?
(a) Uranium
(b) Radium
(c) Thorium
(d) Cadmium ✓

Which one of the following is correct? A concrete wall generally,
(a) only reflects sound
(b) only absorbs sound
(c) only transmits sound
(d) absorbs and transmits sound ✓


Which one of the following is considered as the easily digestible source of protein?
(a) Egg albumin
(b) Soybean ✓
(c) Fish flesh
(d) Red meat

Which one of the following is a water soluble vitamin?
(a) Vitamin A
(b) Vitamin C ✓
(c) Vitamin D
(d) Vitamin K

Which one of the following is a viral disease transmitted to man by the bite or rabid animals particularly dogs?
(a) Cholera
(b) Plague
(c) Malaria
(d) Rabies ✓

Which one of the following groups of animals are primates?
(a) Giraffes and Zebras
(b) Kangaroos and Koalas
(c) Lemurs and Lorises ✓
(d) Rabbits and Hares

Which one of the following glands produces the Growth Hormone (Somatotropin)?
(a) Adrenal
(b) Pancreas
(c) Pituitary ✓
(d) Thyroid

Which one of the following gases is predominant in the atmosphere?
(a) Argon
(b) Nitrogen ✓
(c) Carbon Dioxide
(d) Oxygen

Which one of the following diagrams shows the direction and duration of wind?
(a) Cartogram
(b) Climognim
(c) Ergograph
(d) Star diagram ✓

Which one among the following kinds of organisms resides in the roots of pulse Plants to do nitrogen fixation?.
(a) Bacteria ✓
(b) Fungi
(c) Protozoa
(d) Virus

Which one among the following has the highest energy? [UPSC 2009(CS-✔️P)]
(a) Blue light ✓
(b) Green light
(c) Red light
(d) Yellow light

Which of these is not a mosquito borne disease?
(a) Dengue fever
(b) Malaria
(c) Filariasis
(d) Goitre ✓

Which of the following vitamins helps in the absorption of calcium?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin C
(d) Vitamin D ✓

Which of the following uses non-✔️conventional Source of Energy?
(a) Kerosene lamp
(b) Wax candle
(c) Solar lantern ✓
(d) Torch

Which of the following plant diseases is caused by a virus?
(a) Aster yellows
(b) Barley yellow dwarf
(c) Curly top of sugar beets
(d) All of the above ✓

Which of the following planets rotates clock wise?
(a) Pluto
(b) Jupiter
(c) Venus ✓
(d) Mercury

Which of the following order is given to the plantes of solar system on the basis of their sizes?
(a) Jupiter, Saturn, Earth, Mercury ✓
(b) Saturn, Jupiter, Mercury, Earth
(c) Mercury, Earth, Jupiter, Saturn
(d) Earth, Mercury, Saturn, Jupiter

Which of the following is suitable for growing cotton?
(a) Sandy soil
(b) Clayey soil
(c) Black soil ✓
(d) Alluvial soil

Which of the following is not a natural fibre
(a) Silk
(b) Jute
(c) Coir
(d) Rayon ✓

Which of the following is a water -✔️borne diseases?
(a) Viral hepatitis B
(b) Cholera ✓
(c) Dengu
(d) Influenza

Which of the following has been found useful in keeping cholesterol level down
(a) Tulsi
(b) Serpentina
(c) Turmeric
(d) Garlic ✓

Which of the following crops is of Kharif season?
(a) Soyabean ✓
(b) Linseed
(c) Lentil
(d) Mustard

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