Set - 7 Flashcards
The density of Air is_____________?
0
A. 0.225 kg/m3
B. 1.025 kg/m3
C. 1.225 kg/m3
D. 1.425 kg/m3
C. 1.225 kg/m3
Density of Ice is_________?
0
A. 800kg/m3
B. 917kg/m3
C. 930kg/m3
D. 1000kg/m3
B. 917kg/m3
Wind always blows from area of ________?
0
A. Low pressure to high pressure
B. High pressure to low pressure
C. Only low pressure
D. Only high pressure
B. High pressure to low pressure
Freezing point of water is__________?
2
A. 0 °C
B. -2 °C
C. -4 °C
D. None of above
A. 0 °C
The melting point of ice is_________?
0
A. 00C
B. 1000C
C. 40C
D.-40C
For ice, the melting point is 0°C or 273K.
How many Dynes are there in one gram weight?
0
A. 993
B. 981
C. 250
D. 375
B. 981
The dyne is a unit of force in the centimeter-gram-second (CGS) system of units, and it is defined as the force required to accelerate a mass of one gram by one centimeter per second squared (1 g·cm/s²).
“Ornithology” is the study of_____________?
0
A. Birds
B. Insects
C. Sea Plants
D. Sea Animals
A. Birds
‘Bar’ is the unit of___________?
0
A. Temperature
B. Heat
C. Atmospheric pressure
D. Current
C. Atmospheric pressure
One Joule is equal to__________?
3
A. 105 ergs
B. 103 ergs
C. 107 ergs
D. 1011 ergs
C. 107 ergs
Scientist discovered a previously undetected feature of the human Anatomy that could be the largest organ of human body?
A. Brass
B. Pectora
C. Interstitium
D. Otic
C. Interstitium
In 2018, scientists presented evidence suggesting that the interstitium, a fluid-filled space within tissues throughout the body, may qualify as an organ. Previously thought to be a dense connective tissue, recent research using advanced imaging techniques revealed that the interstitium is an interconnected network of fluid-filled compartments supported by collagen and elastin fibers. It is found throughout various organs and tissues, such as the skin, digestive tract, lungs, and urinary system. However, it is important to note that further research is still ongoing to fully establish its classification as an organ.
Which of the following does not pollute the air?
0
A. Nitrogen Dioxide
B. Sulfur dioxide
C. Carbon dioxide
D. none of these
A. Nitrogen Dioxide
kilohertz (kHz) is a unit which measures?
0
A. Power used by a current of one ampere
B. Electromagnetic radio wave frequencies
C. Voltage
D. Electric resistance
B. Electromagnetic radio wave frequencies
The study of heavenly bodies is known as_________?
0
A. Astrology
B. Astronautics
C. Astronomy
D. Astrophysics
C. Astronomy
Jupiter has ________ known moons.
0
A. 62
B. 73
C. 79
D.53
C. 79
Overview Jupiter has 53 named moons. Others are awaiting official names. Combined, scientists now think Jupiter has 79 moons. There are many interesting moons orbiting the planet, but the ones of most scientific interest are the first four moons discovered beyond Earth—the Galilean satellites.
Jupiter is the largest planet in our solar system, and its extensive moon system is one of its notable features. These moons vary in size, shape, and characteristics, with some of the most well-known ones being Io, Europa, Ganymede, and Callisto, often referred to as the Galilean moons. However, please note that new moons may have been discovered since my last update, so the current number may be subject to change.
In 2013, Planck measured the age of the universe at ___________?
0
A. 13.82 billion years
B. 4.53 billion years
C. 4.6 billion years
D. 4.53 billion years
A. 13.82 billion years
In 2013, the Planck satellite mission provided data that allowed scientists to estimate the age of the universe. The measurement obtained by Planck was approximately 13.82 billion years. Therefore, the correct answer is A. 13.82 billion years. This value is in line with the age of the universe as determined by other observations and measurements, such as the study of cosmic microwave background radiation and the measurements of the Hubble constant.
Human beings use _______ liters of pure oxygen per day.
0
A. 550
B. 2500
C. 1,050
D. 10,000
A. 550
The yellow colour in photochemical smog is due to the presence of____________?
0
A. Sulphur dioxide
B. Carbon dioxide
C. Nitrogen dioxide
D. CFC’s
C. Nitrogen dioxide
Why normal rain is slightly acidic?
0
A. due to presence of dust in air
B. carbon dioxide and water in clouds react to form carbonic acid
C. Ozone depletion
D. All of these
B. carbon dioxide and water in clouds react to form carbonic acid
Disolved oxygen (DO) in water should be?
A. 400 to 800 ppm
B. 4000 to 8000 ppm
C. 0.4 to 0.5 ppm
D. 4 to 5 ppm
D. 4 to 5 ppm
Dissolved oxygen (DO) in water is typically measured in parts per million (ppm) or milligrams per liter (mg/L). The appropriate range of dissolved oxygen levels in most aquatic environments to support healthy aquatic life is generally considered to be around 4 to 5 ppm (or mg/L). Therefore, the correct answer is D. 4 to 5 ppm. It’s important for the water to have sufficient dissolved oxygen for aquatic organisms to survive and thrive. However, specific DO requirements may vary for different species and environmental conditions.
Montreal Protocol 1987 was__________?
0
A. Treaty among nations to reduce nuclear arsenals
B. Climate control treaty
C. Treaty to protect ozone layer
D. Trade policy about tarrifs
C. Treaty to protect ozone layer
How many meters are in one mile?
0
How many meters in one mile? A. 1409.34 B. 1509.34 C. 1609.34 D. None of Above
C. 1609.34
As a result of which treaty, ozone hole in Antarctica is slowly healing?
0
A. Koyoto protocol
B. Ottawa treaty
C. Montreal protocol
D. Oslo Accord
C. Montreal protocol
The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect
A. Nitrogen Dioxide (NO2)
B. Chlorofluorocarbons (CFCs)
C. Methane (CH4)
D. High-fructose corn syrup (HFCs)
C. Methane (CH4)
The second element contributing most to the greenhouse effect is C. Methane (CH4). While carbon dioxide (CO2) is the primary greenhouse gas responsible for trapping heat in the Earth’s atmosphere, methane is the second most significant contributor. Methane is produced through natural processes such as the decay of organic matter and the digestive processes of certain animals. It is also released during human activities such as the production and transport of coal, oil, and natural gas, as well as livestock farming and waste management. Methane is a potent greenhouse gas, capable of trapping more heat than carbon dioxide over a shorter period. Reducing methane emissions is an important aspect of mitigating climate change.
Nitrogen Dioxide (NO2), Chlorofluorocarbons (CFCs), and High-fructose corn syrup (HFCs) are not significant contributors to the greenhouse effect. Nitrogen dioxide is a pollutant primarily associated with air pollution and does not have a long atmospheric lifespan. Chlorofluorocarbons (CFCs) are potent greenhouse gases, but their production has been phased out due to their destructive impact on the ozone layer. High-fructose corn syrup (HFCs) is a sweetener used in food and beverages and does not directly contribute to the greenhouse effect.
Chemical Name of Dry Ice?
0
A. Solid Carbon Dioxide
B. Calcium Carbon
C. A&B
D. Sodium Oxide
A. Solid Carbon Dioxide
Moon is a__________?
0
A. Star
B. Planet
C. A & B
D. Satellite
D. Satellite
The scientific study of measurement is known as __________?
0
A. Entomology
B. Metrology
C. Ichthyology
D. Ecology
B. Metrology
The study of organisms and their environment is known as ________?
0
A. Acoustics
B. Ecology
C. Ichthyology
D. None of these
B. Ecology
The scientific study of insects is known as _______?
0
A. Ichthyology
B. Entomology
C. Zoology
D. Botany
B. Entomology
The study of fish is known as ________?
0
A. Entomology
B. Ichthyology
C. Ecology
D. None of these
B. Ichthyology
White bloods cells are also known as________?
0
A. Thrombocytes
B. Leucocytes
C. Erythrocytes
D. None of These
B. Leucocytes
White blood cells, also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All white blood cells are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells.
Frozen dew is also known as________?
0
A. Frost
B. Black ice
C. Frozen ice
D. Black hail
B. Black ice
A body of land that is surrounded by water on three sides is called________?
0
A. Strait
B. Bay
C. Peninsula
D. Gulf
C. Peninsula
When a single month has two full moons, the second moon is called________?
0
A. Super moon
B. Blue moon
C. Super blue moon
D. Red moon
B. Blue moon
The term “blue moon” is commonly used to refer to the second full moon that occurs within a calendar month. It is a relatively rare event, hence the phrase “once in a blue moon” used to describe something that happens infrequently. It’s important to note that the term “blue moon” does not actually refer to the moon’s color, as the moon appears the same during any full moon.
Density of Milk is________?
0
A. 1.024 g/cm3
B. 1.034 g/cm3
C. 1.044 g/cm3
D. 1.054 g/cm3
B. 1.034 g/cm3
Density of Water is_________?
1
A. 897 kg/m³
B. 997 kg/m³
C. 1000 kg/m³
D. 1025 kg/m³
B. 997 kg/m³
How many layers of Atmosphere?
4
A. 2
B. 3
C. 4
D. 5
D. 5
The correct answer is D. 5.
The atmosphere is divided into five main layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
The troposphere is the lowest layer of the atmosphere, and it is where most weather occurs.
The stratosphere is the next layer up, and it is where the ozone layer is located.
The mesosphere is the next layer up, and it is the coldest layer of the atmosphere.
The thermosphere is the next layer up, and it is where the aurora borealis and aurora australis occur.
The exosphere is the outermost layer of the atmosphere, and it is where the atmosphere merges with outer space.
Mass of Earth is___________?
0
A. 5.972 × 1024 kg.
B. 6.972 × 1024 kg
C. 7.972 × 1024 kg
D. 8.972 × 1024 kg
A. 5.972 × 1024 kg.
The Temperature of the surface of Sun is_______?
0
A. 5,778 Kelvin
B. 6,778 Kelvin
C. 7,778 Kelvin
D. 9,778 Kelvin
A. 5,778 Kelvin
A dolphin perceives its environment by the sense of__________?
0
A. Sight
B. Sound
C. Both of these
D. None of these
C. Both of these
Which of the following disease is spread by Fleas?
0
A. Small pox
B. Tetnus
C. Typhus
D. Yellow fever
C. Typhus
According to many, including the Guinness Book of World Record,________is the world’s rarest mineral?
0
A. Painite
B. Benitoite
C. Jadeite
D. Taaffeite
A. Painite
Painite : Not just the rarest gemstone, but also the rarest mineral on earth, Painite holds the Guinness World Record for it. After its discovery in the year 1951, there existed only 2 specimens of Painite for the next many decades. By the year 2004, there were less than 2 dozens known gemstones.
Which stone floats on water?
0
A. Pumice stone
B. Lime stone
C. Basalt stone
D. Quartzite stone
A. Pumice stone
The volcanic rock is called ‘pumice stone’ and is very lightweight, meaning it can float on water. Pumice is made when magma from a volcano cools really quickly in water
Echo is a ___________ of sound?
0
A. Reflection
B. Refraction
C. Interference
D. None
A. Reflection
There is no connection of supernova explosion with___________?
0
A. Cosmic rays
B. Pulsars
C. The formation of heavy elements
D. Quasars
D. Quasars
There is no direct connection between supernova explosions and the formation of quasars. Quasars are extremely bright and distant celestial objects that are believed to be powered by supermassive black holes at the centers of galaxies. They emit intense radiation across various wavelengths, including visible light and radio waves. On the other hand, supernova explosions are the energetic events that occur at the end of the life cycle of massive stars. Supernovae release vast amounts of energy and are responsible for the formation of heavy elements through nucleosynthesis. They can also produce cosmic rays, which are high-energy particles. Pulsars, on the other hand, are highly magnetized, rotating neutron stars that are formed as a result of certain types of supernovae. Therefore, the correct answer is D. Quasars.
According to Einsteins general theory of relativity the universe:________________?
0
A. Must be expanding
B. Must be contracting
C. Must be either expanding or contracting
D. Must be neither expanding nor contracting
C. Must be either expanding or contracting
Which rays are trapped in our galaxy by magnetic waves?
0
A. Alpha rays
B. Gamma rays
C. Cosmic rays
D. None of these
C. Cosmic rays
UPS is now widely use in households. What does UPS stands for ?
0
A. Uniform Power Storage
B. Universal Product Support
C. Under Panel Storage
D. Uninterruptible Power Supply
D. Uninterruptible Power Supply
The Sun is at an average distance of about________ million kilometers away from Earth?
0
A. 100 million
B. 150 million
C. 200 million
D. 250 million
B. 150 million
Telephone was invented by__________?
0
A. Vint Cerf
B. Charles Babbage
C. Edison
D. Alexander Graham Bell
D. Alexander Graham Bell
What is the weight of the average human brain?
0
A. 1.2 to 1.4 Kg
B. 1.4 to 1.8 Kg
C. 2.1 to 2.8 Kg
D. 3.1 to 3.4 Kg
A. 1.2 to 1.4 Kg
While the weight of an individual’s brain can vary based on factors such as age, sex, and overall health, the average weight falls within the range of 1.2 to 1.4 kg. It’s important to note that this is an average value and individual brains may deviate from this range.
In Fishes excretory Product is__________?
0
A. Nitrogen
B. Ammonia
C. Uria
D. Carbon dioxide
B. Ammonia
Which blood cells are called ‘Soldiers’ of the body?
0
A. White Blood Cells
B. Platelets
C. Red Blood Cells
D. None of the above
A. White Blood Cells
The white blood cells are called the soldiers of the body because they are responsible for protecting our bodies from infective pathogens and parasites.
The blood cells that are commonly referred to as the “Soldiers” of the body are A. White Blood Cells (WBCs), also known as leukocytes. White blood cells play a crucial role in the immune system and defense against infections. They are responsible for identifying and attacking foreign invaders such as bacteria, viruses, and other pathogens. White blood cells are involved in the body’s immune response, inflammation, and the removal of damaged cells. Platelets are involved in blood clotting, and red blood cells are responsible for carrying oxygen to the body’s tissues. While both platelets and red blood cells have important functions, they are not typically referred to as the “Soldiers” of the body.
Adult human brain is about_________% of the total body weight.
0
A. 2%
B. 3%
C. 7%
D. 8%
A. 2%
Humans can hear in the range of ______ to _______Hertz (Hz).?
0
A. 10 Hz to 10,000 Hz.
B. 20 Hz to 20,000 Hz.
C. 30 Hz to 30,000 Hz.
D. 40 Hz to 40,000 Hz.
B. 20 Hz to 20,000 Hz.
Pressure is measured by_________?
0
A. barometer
B. Voltmeter
C. Lactometer
D. Ammeter
A. barometer
Which of the following is the hardest substance?
0
A. Copper
B. Diamond
C. Iron
D. Silicon
B. Diamond
Which one of the following is also called Stranger Gas?
0
A. Neon
B. Argon
C. Xenon
D. Nitrous oxide
C. Xenon
Xenon is a noble gas that is commonly used in various applications, including lighting, anesthesia, and in certain scientific research. It is called “Stranger Gas” due to its relatively low abundance in the Earth’s atmosphere compared to other gases, making it less familiar or common to people. Neon, argon, and nitrous oxide are not typically referred to as “Stranger Gas.” Neon is known for its use in neon signs, argon is widely used in various industrial applications, and nitrous oxide is commonly known as “laughing gas” due to its use as an anesthetic.
For which one of the following is the density maximum?
0
A. Ice
B. Water
C. Benzene
D. Chloroform
B. Water
If you have “caries” then which doctor you have consult?
0
A. Dermatologist
B. Orthopaedist
C. Dentist
D. Nurologist
C. Dentist
Caries is tooth decay, commonly called cavities. The symptoms—tender, painful teeth—appear late. Diagnosis is based on inspection, probing of the enamel surface with a fine metal instrument, and dental x-rays. Treatment involves removing affected tooth structure and restoring it with various materials.
What is the average weight of Human Heart?
0
A. 300 gram
B. 350 gram
C. 400 gram
D. 450 gram
A. 300 gram
The average gross weight of the heart was 289.6 g for men at an age of 31-40 years, 284.7 g for women at the same age. At an age of 61-70 years, the average weight was 345.9 g for men and 285.1 g ior women.
CT Scan stand for__________?
0
A. Computed Tomography Scan
B. Computer Topography Scan
C. Computed Topography Scan
D. Computer Tomography Scan
A. Computed Tomography Scan
In human osmoregulation takes place by___________?
0
A. Liver
B. Kidney
C. Spleen
D. Lungs
B. Kidney
In humans, osmoregulation primarily occurs through the actions of the kidneys. The kidneys regulate the concentration of solutes and the volume of water in the body by filtering the blood, reabsorbing needed substances, and excreting waste products as urine. Hormones such as antidiuretic hormone (ADH) and aldosterone play important roles in regulating water reabsorption and ion balance.
Osmoregulation is crucial for maintaining the proper functioning of cells, maintaining blood pressure, regulating body temperature, and supporting overall physiological processes in various organisms.
The average length of the kidney of a man is about?
0
A. 7cm to 8cm
B. 8cm to 10 cm
C. 10cm to 13 cm
D. 13cm to 16cm
C. 10cm to 13 cm
The time taken by Sun to revolve around the center of our galaxy is___________?
0
A. 150 million years
B. 250 million years
C. 300 millon years
D. 350 millon years
B. 250 million years
Primary cosmic rays are composed largely of very fast__________?
0
A. Protons
B. Neutrons
C. Electrons
D. Gamma rays
A. Protons
The Sun produces most of its energy by_____________?
0
A. Nuclear fusion
B. nuclear fission
C. Burning hydrogen
D. None of these
A. Nuclear fusion
It is observed that the total pressure exerted by air on the man of average size is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of__________?
0
A. An equal and opposite pressure acts from inside B. of the height of a man C. of gravity D. Earth pulls the man upward E. None of these
A. An equal and opposite pressure acts from inside
Inhaled air passes through which of the following in the last?
0
A. Bronchiole B. Larynx C. Pharynx D. Trachea E. None of these
A. Bronchiole
In Eye donation, which part of the eye used?
0
A. Retina
B. Iris
C. Cornea
D. Optic nerve
C. Cornea
Who is Considered as Father of Botany?
0
A. Aristotle
B. Gregor Joghn Mandle
C. Theophrastus
D. Corlous Linnaeous
C. Theophrastus
Theophrastus (c. 371–286 BC), known as the ‘father of botany’, wrote many books, including the 10-volume set, Historia Plantarum (‘Enquiry into Plants’).
Which Part of the Brain Regulates Body Temperature?
0
A. cerebellum
B. cerebrum
C. hypothalamus
D. medulla
C. hypothalamus
The hypothalamus helps keep the body’s internal functions in balance. It helps regulate: Appetite and weight. Body temperature
Which of the following is a Non Metal that remains Liquid at room temperature?
0
A. Phosphorous
B. Bromine
C. Chlorine
D. Helium
B. Bromine
Which of the following is used in Pencils?
0
A. Graphite
B. Silicon
C. Charcoal
D. Phosphorous
A. Graphite
Frog Heart has how many chambers?
0
A. 2
B. 3
C. 4
D. 5
B. 3
What do you understand by disease “Insomnia”?
0
A. Color blindness
B. Depression
C. Hypertension
D. Inability to sleep
D. Inability to sleep
How many moons does Uranus have?
0
A. 15
B. 12
C. 27
D. 45
C. 27
Winter Solstice means____________?
0
A. longest night
B. longest day
C. smallest night
D. smallest day
A. longest night
How many moons does Neptune have?
5
A. 63
B. 12
C. 19
D. 14
D. 14
Oncology is the Study of__________?
A. Onions
B. Origins
C. Cancer
D. Diseases
C. Cancer
Summer solstice means__________?
0
A. longest day
B. longest night
C. smallest day
D. none of these
A. longest day
Which one is Natural Satellite?
0
A. Sun
B. Moon
C. Venus
D. Mercury
B. Moon
What are Columns in Periodic table called?
0
A. Period
B. Group
C. Verticals
D. Perpendiculars
B. Group
What are rows in Periodic table called?
0
A. Period
B. Group
C. Verticals
D. Perpendiculars
A. Period
How many rows and columns are in the modern Periodic Table?
0
A. 18 columns and 7 rows
B. 12 columns and 9 rows
C. 7 columns and 18 rows
D. 25 columns and 15 rows
A. 18 columns and 7 rows
When we sleeps blood pressure_____________?
0
A. Increases
B. Decreases
C. Remain constant
D. None of these
B. Decreases
Who is the founder of solar system?
0
A. Copernicus
B. Newton
C. Galileo
D. Kepler
A. Copernicus
What is the rarest blood type in humans?
0
A. O-
B. O+
C. AB+
D. AB-
D. AB-
The psychological test of human emotions and personality, using inkblots, is formally known as what?
0
A. Rorschach B. Nervous C. Renal D. All of above E. None of these
A. Rorschach
What is the name of the biggest part of human brain?
0
A. Cerebellum
B. Cerebrum
C. Brainstem
D. Pituitary
B. Cerebrum
The largest part of the brain, the cerebrum initiates and coordinates movement and regulates temperature. Other areas of the cerebrum enable speech, judgment, thinking and reasoning, problem-solving, emotions and learning.
What is the name of the biggest part of human brain?
0
A. Cerebellum
B. Cerebrum
C. Brainstem
D. Pituitary
B. Cerebrum
The largest part of the brain, the cerebrum initiates and coordinates movement and regulates temperature. Other areas of the cerebrum enable speech, judgment, thinking and reasoning, problem-solving, emotions and learning.
Iodised salts contains the iodine salts of which metal?
A. Iodine
B. Potassium
C. Sodium Chloride
D. Chlorine
B. Potassium
Tocopherol is the chemical name of which vitamin?
0
A. vitamin C
B. vitamin D
C. vitamin A
D. vitamin E
D. vitamin E
What prevents the earth’s atmosphere from drifting away into space?
0
A. Gravity
B. Ozone layer
C. Troposphere
D. Ecosystem
A. Gravity
What melted rock eventually becomes lava?
0
A. Iron
B. Metals
C. Magma
D. Coal
C. Magma
What natural phenomena are measured by the Richter Scale?
0
A. Volcanoes
B. Typhoons
C. Earth quacks
D. Tsunami
C. Earth quacks
How many time zones are there in the world?
0
A. 22
B. 12
C. 16
D. 24
D. 24
The study of the weather is called____________?
0
A. Meteorology
B. Weatherology
C. Ecology
D. Geology
A. Meteorology
The lowest region of the earth’s atmosphere comes between the earth and stratosphere. what is this region’s name?
0
A. Ionosphere
B. Troposphere
C. Stratosphere
D. Mesosphere
B. Troposphere
The outermost layer of the Earth is called ____________?
0
A. Crust
B. Mental
C. Core
D. None of these
A. Crust
What is the name of the branch of the science that studies the ocean?
0
A. Oceanography
B. Algology
C. Phology
D. Orintology
A. Oceanography
