Set - 9 Flashcards by Compitative Exams MCQs

Which natural element has the highest melting point?
0

A. Iron
B. Tungsten
C. Copper
D. Silver

B. Tungsten

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Which is the hardest substance in the human body?
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A. Tooth enamel
B. Skull
C. Knee cap
D. Rib

A. Tooth enamel

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Which of the following is not a mammal?
0

A. Fish
B. Cow
C. Goat
D. Whale

A. Fish

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Which Organ is affected by trachoma?
0

A. Liver
B. Lungs
C. Eyes
D. Brain

C. Eyes

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Which vitamin is available to the human body through sun bathing?
0

A. Vitamin A
B. Vitamin D
C. Vitamin K
D. Vitamin B12

B. Vitamin D

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Who first measured the velocity of light?
0

A. Einstein
B. Newton
C. Ole Roemer
D. Galileo

C. Ole Roemer

The first successful measurement of the speed of light was made by Danish astronomer Ole Rømer in the late 17th century. In 1676, Rømer observed the eclipses of Jupiter’s moons and noted that the time between eclipses varied depending on the position of Earth in its orbit. He realized that this variation was due to the time it took for light to travel across the changing distance between Earth and Jupiter.

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In which part of the Plant does photosynthesis take place?
0

A. Flowers
B. Roots
C. Stem
D. Leaves

D. Leaves

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Which of the following is affected by rickets in the human body?
0

A. Bones
B. Tissues
C. Muscles
D. Blood

A. Bones

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What is the common name for the drug acetyl salicylic acid?
0

A. Paracetamol
B. Analgin
C. Aspirin
D. Penicillin

C. Aspirin

Aspirin is a salicylate used to treat pain, fever, inflammation, migraines, and reducing the risk of major adverse cardiovascular events. Also known as Aspirin, acetylsalicylic acid (ASA) is a commonly used drug for the treatment of pain and fever due to various causes

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The sounds of which frequency are human beings most sensitive?
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A. 400 hertz
B. 20 hertz
C. 20000 hertz
D. 5000 hertz

D. 5000 hertz

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On which disease did Robert Koch work?
0

A. Tuberculosis
B. Cholera
C. Malaria
D. Diabetes

A. Tuberculosis

In 1882, Koch announced his discovery of Mycobacterium tuberculosis, the bacterium responsible for causing TB, which was a major public health concern at the time. He developed a technique for culturing the bacterium, which allowed for the production of a vaccine against TB.

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Which of the following gases do plants and trees give out during photosynthesis?
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A. Hydrogen
B. Nitrogen
C. Oxygen
D. Carbon dioxide

C. Oxygen

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Which of the following is not a waterborne disease?
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A. Cholera
B. Amoebiasis
C. Typhoid
D. Influenza

D. Influenza

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Name the branch of science which deals with the study of sound and sound waves?
2

A. Aeronautics
B. Acoustics
C. Aerostatics
D. Aetiology

B. Acoustics

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Which metal is added to steel to make it stainless steel?
1

A. Chromium
B. Aluminium
C. Carbon
D. Copper

A. Chromium

Stainless steels are steels containing at least 10.5% chromium, less than 1.2% carbon and other alloying elements. Stainless steel’s corrosion resistance and mechanical properties can be further enhanced by adding other elements, such as nickel, molybdenum, titanium, niobium, manganese, etc.

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The average kinetic energy of the molecules of a body determines?
0

A. heat
B. temperature
C. internal energy
D. none

B. temperature

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Which of the following is responsible for largest amount of oxygen on earth?
1

A. Peat bogs
B. Algae
C. Trees
D. None of these

B. Algae

algae is responsible for producing the largest amount of oxygen on Earth through the process of photosynthesis. Algae are simple, aquatic organisms that use sunlight, carbon dioxide, and water to produce energy in the form of sugar, while releasing oxygen into the atmosphere. In fact, it is estimated that algae are responsible for producing about 50-80% of the oxygen in the Earth’s atmosphere, with the remaining amount produced by land-based plants. This makes algae a crucial component of the Earth’s ecosystem and a vital source of oxygen for all living organisms.

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P-waves is a term associated with__________?
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A. Earthquakes
B. Oceans
C. Wind
D. Rivers

A. Earthquakes

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Chemically finger nails are made up of ____________?
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A. Carbohydrate
B. Fats
C. protein
D. Starch

C. protein

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“COTTON” is grown on ___________?
4

A. Black soil
B. Red Soil
C. Regur Soil
D. Alluvial Sea

A. Black soil

Since black soil has a high level of clay, it has good water holding capacity that makes it suitable for the growth of cotton.

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Very small time intervals are accurately measured by the___________?
0

A. Pabsars
B. White dwarfs
C. Atomic Clocks
D. None of these

C. Atomic Clocks

Atomic clocks are the most accurate time and frequency standards known, and are used as primary standards for international time distribution services, to control the wave frequency of television broadcasts, and in global navigation satellite systems such as GPS.

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Who invented the Hot Air Balloon?
0

A. Davy
B. Montgolfier
C. Edison
D. Jarvik

B. Montgolfier

The hot air balloon was invented by the Montgolfier brothers, Joseph-Michel and Jacques-Etienne, in France in the late 18th century.

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Which of the following is a ferromagnetic material ?
0

A. Tungsten
B. Aluminium
C. Copper
D. Nickel

D. Nickel

A ferromagnetic material is a material that exhibits a strong magnetic attraction when subjected to an external magnetic field.

Examples of ferromagnetic materials include iron, nickel, cobalt, and some of their alloys.

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What are the primary colors of Light?
33

A. White, Black, Blue
B. Red, Yellow, Blue
C. Red, Orange, Blue
D. Red, Green, Blue

D. Red, Green, Blue

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What are the primary colors of Pigment? 6 A. White, Black, Blue B. Red, Yellow, Blue C. Red, Orange, Blue D. Red, Green, Blue

B. Red, Yellow, Blue Painters' subtractive primary colors are red, yellow and blue. These three hues are called primary because they cannot be made with mixtures of other pigments."

The post-mortem examination of a body is called __________? 0 A. Etymology B. autopsy C. Anatomy D. None of these

B. autopsy

The luster of diamond is due to_________? 1 A. Reflection B. Total internal reflection C. Refraction D. None of these

B. Total internal reflection

Which statement about sound is true? 0 A. Sound can’t travel through vacuum B. Sound can’t travel through glass C. Sound can’t travel through water D. Non of theses

A. Sound can’t travel through vacuum

Enology is the study of____________? 0 A. Wine B. Digestion C. Kidneys D. None

A. Wine Viticulture is the study of grape cultivation, while enology is the study of wine and winemaking

Nephology is study of_____________? 0 A. Knowledge B. Clouds C. Rain D. None

B. Clouds. Nephology is the study of clouds, their physical and chemical properties, and their formation, classification, and behavior. This field of study is important in weather forecasting, climate modeling, and aviation, among other applications.

The Reason for a Swimming Pool to appear Less Deep than the actual depth is__________? 0 A. Refraction B. Light scattering C. Reflection D. Interference

A. Refraction The reason a swimming pool can appear less deep than its actual depth has to do with the way light is refracted or bent as it passes from water to air. When light passes through a medium like water, it slows down and changes direction, which causes the object viewed through the water to appear closer to the surface than it actually is. This effect is known as refraction, and it is more pronounced when looking at objects at an angle, such as the bottom of a swimming pool. As a result, the bottom of the pool may appear closer to the surface than it actually is, making the pool appear shallower than its true depth.

Ombrophobia is fear of____________? 0 A. Rain B. Snow C. Smog D. None of these

A. Rain

Which creature is the symbol of Medicine? 0 A. Cat B. Lizard C. Snake D. None of these

C. Snake Medical symbol: A staff or rod with a snake curled around it. This is the Rod of Aesculapius (also called Asklepios), the ancient mythical god of medicine. Asklepios may have been a real person who was renowned for his gentle remedies and humane treatment of the mentally ill

A reptile with a four-chambered heart is______________? 0 A. Snake B. Turtle C. Lizard D. Crocodile

D. Crocodile There is only one group of reptiles that have a four-chambered heart, and that is the crocodilians, which includes crocodiles, alligators, caimans, and gharials. A four-chambered heart is a feature of endothermic animals, such as birds and mammals, and is typically associated with a high metabolic rate. The four chambers of the heart allow for the efficient separation of oxygen-rich and oxygen-poor blood, which is essential for supporting the high energy demands of these animals. Crocodilians, despite being ectothermic (cold-blooded), have a four-chambered heart that is functionally similar to that of birds and mammals. This is thought to be an adaptation to their semi-aquatic lifestyle, which requires them to hold their breath for extended periods of time while diving for prey. Having a four-chambered heart also allows crocodilians to shunt blood away from the lungs and directly to the rest of the body when they are underwater, and then quickly redirect blood to the lungs to take in oxygen when they surface to breathe. This helps them conserve energy and prolong their time underwater.

Which Gas is included in Fry Chips Packets for safety? 2 A. Nitrogen gas B. Carbon dioxide C. Oxygen D. Hydrogen

A. Nitrogen gas

Study of Soil is called__________? 0 A. Pedology B. Pedagogy C. sociology D. Demography

A. Pedology

The type of glass used in making lenses and prism is___________? 0 A. Pyrex glass B. jena glass C. Flintglass D. Soft glass

C. Flintglass

What “Enrico Fermi” invented? 2 A. X ray machine B. Betatron C. Cyclotron D. Nuclear reactor

D. Nuclear reactor He was one of very few physicists to excel in both theoretical physics and experimental physics. Fermi was awarded the 1938 Nobel Prize in Physics for his work on induced radioactivity by neutron bombardment and for the discovery of transuranium elements.

The metal, which is a constituent of vitamin B12 is____________? 0 A. Iron B. Magnesium C. Zinc D. Cobalt

D. Cobalt

Tetanus is caused by____________? 0 A. Clostridium B. Virus C. Bacteriophage D. Salmonella

A. Clostridium

The carbon dioxide content in the air that we exhale is about? 0 A. 4% B. 9% C. 15% D. 16%

A. 4%

Which of the part of tongue bears cells for sour taste? 0 A. Front B. Back C. Sides D. Middle

C. Sides

Cell or Tissue death within a living body is called as__________? 0 A. Neutrophilia B. Nephrosis C. Necrosis D. Neoplasia

C. Necrosis

What inspired reflecting road lights to be invented? 0 A. Car door reflecting mirrors B. The light a cat’s eyes gave off on a fence C. Sun light on steel posts on road sides D. The sun light on the windshiel

B. The light a cat’s eyes gave off on a fence

Insufficient blood supply in human body is referred as___________? 0 A. Ischemia B. Hyperemia C. Hemostasia D. Hemorrhage

A. Ischemia

The toxicity of which of the following heavy metals leads to Liver cirrhosis? 0 A. Copper B. Lead C. Mercury D. Zinc

A. Copper The heavy metal that is known to cause liver cirrhosis is copper. Copper is an essential mineral that is required for various physiological processes in the body, including the formation of red blood cells and the maintenance of nerve cells. However, excessive levels of copper in the body can lead to a condition known as Wilson's disease, which can cause liver damage and cirrhosis if left untreated.

EEG records the activity of__________? 0 A. Heart B. Lungs C. Brain D. Muscles

C. Brain EEG stands for electroencephalogram, which is a test that records the electrical activity of the brain. The test measures the electrical impulses produced by neurons in the brain, which are detected by small metal electrodes placed on the scalp.

Animals living in the Tree trunks are known as___________? 7 A. Arboreal B. Volant C. Amphibious D. Aquaticx

A. Arboreal means living in trees. In every habitat in which trees are present, animals have evolved to move in them. animals like Koalas, monkey, bird like wood picker, squirrel etc

What happens to a person who receives the wrong type of blood? 0 A. All the arteries constrict B. All the arteries dialates C. The RBCs agglutinate D. The spleen and lymphnodes deteriorate

C. The RBCs agglutinate The agglutinated red cells can clog blood vessels and stop the circulation of the blood to various parts of the body. The agglutinated red blood cells also crack and its contents leak out in the body. The red blood cells contain hemoglobin which becomes toxic when outside the cell.

The brain of human adult weighs about_________? 0 A. 1200 – 1300 gm B. 1600 – 2000 gm C. 500 – 800 gm D. 100 – 200 gm

A. 1200 – 1300 gm

The ability of the Eye to see in the dark, is due to the production of a purple pigment known as________? 0 A. Carotene B. Rhodopsin C. Iodopsin D. Retinene

D. Retinene

Magnitude of energy released by an earthquake is calculated using ________? 0 A. Earthquake scale B. Seismic scale C. Richter scale D. Temblor scale

C. Richter scale

The point within the Earth where earthquakes originate is _________? 0 A. Comma B. Origin C. Epicenter D. Focus

D. Focus

Place directly above focus on Earth’s surface is known as _________? 0 A. Strike B. Comma C. Epicenter D. Origin

C. Epicenter

In general, the most destructive earthquake waves are the __________ ? 0 A. P waves B. S waves C. Surface waves D. All of the above

C. Surface waves

P Waves are also said to be __________ waves? 0 A. Push-pull B. Side-side C. Up-down D. None of the above

A. Push-pull

Earthquakes occur most frequently at __________? 0 A. Plate boundaries B. Plate surface C. Ocean beds D. All of the above

A. Plate boundaries

Sericulture is the study of which discipline ? 0 A. silk production B. milk Production C. honey production D. forest timber production

A. silk production

Rearing of honey bees for honey production is called? 0 A. Sericulture B. Apiculture C. Viticulture D. Bees culture

B. Apiculture

Silver fish is the name of__________? 0 A. Insect B. Fish C. Bird D. Mammal

A. Insect

Scientific Name of Human is____________? 0 A. Homo sapiens B. Mono sapiens C. Bio sapiens D. Cosmopolitan

A. Homo sapiens

‘Satiety’ is the condition in which patient lacks? 0 A. Talk B. Eat C. Sleep D. Walk

B. Eat

‘Christian Friedrich Schönbein’ discovery is___________? 0 A. Ozone B. Radium C. Cholorine D. Neutron

A. Ozone

What is the chemical formula of Ozone? 0 A. H2O B. C12 C. O3 D. CH4

C. O3

When Pluto was cast out from the list of Planets? 0 A. September 24, 2006 B. April 28, 2004 C. January 26, 2006 D. August 24, 2006

C. January 26, 2006 | D. August 24, 2006

what is anthracite? 0 A. Carbon B. Hard coal C. Ammonia D. None of these

B. Hard coal

The image formed in a compound microscope is_____________? 0 A. erect B. inverted C. sometimes erect, sometimes inverted D. none

B. inverted

The lens used in a simple microscope is____________? 0 A. Concave B. Convex C. Cylindrical D. None

B. Convex

What is the first element in the periodic table? 0 A. Hydrogen B. Helium C. Nitrogen D. Carbon

A. Hydrogen

Who is considered the “father of psychoanalysis? 1 A. Sigmund Frend B. Galileo C. Aristotle D. Fabrica

A. Sigmund Frend

At what temperature are Celsius and Fahrenheit equal? 0 A. -40 degree B. 40 degree C. -10 degree D. 10 degree

A. -40 degree

Diamonds are made up almost entirely of what element? 1 A. Carbon B. Helium C. Methane D. Nitrogen

A. Carbon

Diamonds are made up almost entirely of what element? 1 A. Carbon B. Helium C. Methane D. Nitrogen

A. Carbon

Who came up with three laws of motion? 0 A. Galileo B. Albert Einstein C. Issac Newton D. Hubble

C. Issac Newton

hat has no charge, and is one of the fundamental particles making up an atom’s nucleus? 0 A. Electron B. Neutron C. Proton D. All of Above

B. Neutron

What are the three basic units of measurement for the metric system? 0 A. Metre, litre and gramme B. Centimetre, kilograms and metric C. Kilogram, mass and energy D. Kelvin, cd and mole

A. Metre, litre and gramme

Which are the only two elements on the periodic table that are liquid at room temperature? 0 A. Mercury and Bromine B. Carbon and helium C. Nitrogen and Hydrogen D. Oxygen and Neon

A. Mercury and Bromine

Who invented the first battery? 0 A. Alessandro volta B. Tim Berner C. Rob Stothard D. Georges Leclanche

A. Alessandro volta

Lunar eclipse occurs on__________? 0 A. New Moon B. Full Moon C. Half Moon D. Quarter Moon

B. Full Moon

Tooth decay is caused by? 0 A. Salt B. Sugar C. Calcium D. Formalin

B. Sugar

The protein content in wheat is approximately? 0 A. 8% B. 6% C. 13% D. 17%

C. 13%

What is the medical term for low blood sugar? 0 A. Hypoglycemia B. Lymphoblastic leukemia C. Pulmonary edema D. Diabetes mellitus

A. Hypoglycemia

The average human body contains how many pints of blood? 0 A. 3 to 5 pints B. 5 to 7 pints C. 7 to 8 pints D. 9 to 12 pints

D. 9 to 12 pints

People with what blood type can give blood to anyone and are thus called universal donors? 0 A. O- B. O C. AB+ D. AB-

A. O-

Penicillin is used to fight what type of infections? 0 A. Bacteria B. Viral C. Pneumonia D. Sepsis

A. Bacteria

The olfactory nerves affect what sense in brain? 0 A. Smell B. Feel C. Touch D. Hear

A. Smell

What is the body’s natural or acquired ability to resist certain diseases? 0 A. Immunity B. Endocrine C. Exocrine D. All of above

A. Immunity

What type of Energy does spring have? 0 A. Elastic Potential Energy B. Kinetic Energy C. Potential Energy D. None of the above

A. Elastic Potential Energy

Red + Green + Blue = ________? 0 A. Maroon B. White C. Black D. None of the above

B. White

Soap is ______? 0 A. Acid B. Chemical C. Powder D. Salt

D. Salt

The chemical name of “Acid” (Tezaab) is___________? 2 A. Sulfuric acid B. Sodium chloride C. Citric Acid D. None of these

A. Sulfuric acid

Which human hormone is called love hormone? 0 A. Oxytocin B. Melatonin C. Adrenalin D. Renin

A. Oxytocin Oxytocin is a hormone that's produced in the hypothalamus and released into the bloodstream by the pituitary gland. Its main function is to facilitate childbirth, which is one of the reasons it is called the "love drug" or "love hormone.

How many layers does the earth have? 0 A. 1 B. 2 C. 3 D. 4

C. 3

Earth is divided into following three layers? 0 a. Crust, Mountains, Oceans b. Crust, Mantle, Trenches c. Trenches, Mountains, Core d. Crust, Mantel, Core

d. Crust, Mantel, Core

Which of the following cannot be stored in glass bottle? 0 A. Aqua regia B. HF C. HCL D. HBr

B. HF

Which of the following mixture of gases is required in gas welding? 0 A. Oxygen and ethylene B. Oxygen and hydrogen C. Acetylene and oxygen D. Acetylene and hydrogen

C. Acetylene and oxygen

Dead red blood corpuscles are stored in____________? 0 A. Liver B. Spleen C. Kidney D. Heart

B. Spleen

Who invented “Aspirin” in 1897? 0 A. Barnard B. Newton C. Felix Hoffmann D. McLeod

C. Felix Hoffmann The pain-relieving drug aspirin, also known as acetylsalicylic acid, was first synthesized in 1897 by a German chemist named Felix Hoffmann. Hoffmann worked for the pharmaceutical company Bayer, and was tasked with developing a more effective pain reliever than the salicylic acid that was commonly used at the time.

“Beaufort Scale” is used to measure____________? 0 A. Wind Velocity B. Air Pressure C. Wind Direction D. Humidity

A. Wind Velocity

746 watts are equivalent to_____________? 0 A. 1 Joule B. 1 erg C. 1HP D. 1 poise

C. 1HP

Sunlight is made of__________colours? 0 A. Seven colours B. Five colours C. Three colours D. Non of these

A. Seven colours