Set-3 Flashcards
When a person enters a dark room from bright light he is not able to see clearly for a little while because the?
0
A. Eye is unable to adjust itself immediately
B. Retina becomes insensitive momentarily
C. Iris is unable to dilate the pupil immediately
D. Distance between the lens and retina take time to adjust
C. Iris is unable to dilate the pupil immediately
What is the average adult pulse rate?
0
A. 140-150
B. 115-125
C. 72-80
D. 60
C. 72-80
The beautiful color patterns exhibited by a peacock in its tail feathers are due to ?
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A. Selective absorption of light
B. Selective re ection of light
C. Sinterference of light
D. Natural colour pattern of feathers
A. Selective absorption of light
A lake starts freezing because of the cold atmosphere. It will first freeze
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A. At the bottom
B. ln the middle pan
C. At the top surface
D. Uniformly throughout the water body
C. At the top surface
The sun appears red at sunrise and sunset while it appears white at noon, because
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A. Of refraction
B. It is cooler at sunrise and at sunset
C. Of diffraction leading to red end of the spectrum reaching the earth.
D. Of Scattering of light due to dust particles and air molecules.
D. Of Scattering of light due to dust particles and air molecules.
An astronaut inside a spacecraft is in a state of weightlessness. This implies that?
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A. The mass of the astronaut is reduced to zero
B. Gravity inside the spacecraft ceases to act
C. The astronaut is outside the influence of the earth’s gravitational force
D. The astronaut and the spacecraft are both in a free-failing state
D. The astronaut and the spacecraft are both in a free-failing state
An astronaut in a spacecraft is in a state of weightlessness because both the astronaut and the spacecraft are in a state of free fall. This means that the only force acting on them is gravity, and they are both accelerating at the same rate. As a result, the astronaut does not feel the force of gravity, and they experience a feeling of weightlessness.
An iceberg is floating in sea. How much of its mass will remain above the surface of water?
0
A. One tenth
B. One fifth
C. One fourth
D. One third
A. One tenth
Most of the ozone in the atmosphere is concentrated in the _____________?
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A. Mesosphere
B. Troposphere
C. Stratosphere
D. ionosphere
C. Stratosphere
The cow’s milk contains how much amount of water in terms of percentage?
0
A. 60%
B. 65%
C. 72%
D. 80%
D. 80%
T.V. transmission cannot cover a very large area because
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A. the strength of T.V. waves is very limited
B. picture cannot be transmitted clearly after a specific distance
C. the shape of the earth is spherical
D. the air is not a good conductor of light and sound/waves
C. the shape of the earth is spherical
The Green House Effect is caused by an excess of ?
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A. Carbon dioxide
B. Carbon monoxide
C. Carbon tetrachloride
D. None of the above
A. Carbon dioxide
Bats can also fly in dark because they are capable of taking the help of _________?
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A. Ultraviolet Waves
B. Ultrasonic Waves
C. Electromagnetic Waves
D. Special Retina
B. Ultrasonic Waves
What is ‘Stealth Technology‘?
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A. A device which when attached to an aircraft makes it invisible on the radar
B. A coating which reduces the visibility of an aircraft on radar
C. A Technology by which it is possible for the aircraft’s to spy in the enemy air-space
D. A technology by using which paratroopers can be dropped stealthily behind the enemy columns.
B. A coating which reduces the visibility of an aircraft on radar
The primary function of the feathers in birds is to _________?
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A. Provide insulation for preserving body heat
B. Provide striking surface to the wings for flying
C. Make the body surface waterproof
D. impart coloration for species as well as sex recognition
B. Provide striking surface to the wings for flying
The rear view mirror of a motor vehicle is ________?
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A. Concave
B. Plane
C. Convex
D. Biconcave
C. Convex
Lead ball falls through water more slowly than through air because __________?
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A. The value of ‘g’ is less in water
B. Density of air is less than that of water
C. Of the viscous force in water
D. Of The surface tension of water
C. Of the viscous force in water
A Fahrenheit thermometer indicates a temperature of ‘ 14°F. its corresponding reading on the Celsius scale will be _________?
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A. – 2O°C
B. – 10°C
C. + 10°C
D. + 20°C
B. – 10°C
Which one of the following sets of color combinations is added in color vision in TV’?
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A. Red, green and blue
B. Orange, back and violet
C. White. red and yellow
D. Yellow, green and blue
A. Red, green and blue
A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to __________?
1
A. Remain unaffected
B. Fall away from the train
C. Fall towards the train
D. Fall away from or towards the train depending upon the speed
C. Fall towards the train
Water is a highly effective coolant for a car engine because _________?
4
A. Water is good conductor of heat
B. Water has very high specific heat capacity
C. Water boils at a comparatively high temperature
D. Evaporation of water produces lot of cooling
B. Water has very high specific heat capacity
Scalding with steam is more severe than scalding by boiling water because_______?
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A. Steam can penetrate the skin
B. Steam is at a higher temperature
C. Steam contains more energy than boiling water
D. Steam is at a higher pressure
C. Steam contains more energy than boiling water
In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed as____________?
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A. Electroplating
B. Annealing
C. Galvanization
D. Vulcanization
C. Galvanization
The cracking sound heard when dry hair is combed with a hard rubber comb is due to_________?
8
A. The hair barging against the charged comb
B. Small electric sparks
C. The rubbing of the comb with the hair
D. None of the above
B. Small electric sparks
Detergents dissolved in water help in cleaning clothes by_________?
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A. Increasing the temperature of water
B. Reacting chemically with dirt
C. Reducing the surface tension of water
D. Dissolving dirt
C. Reducing the surface tension of water
The absorption of ink by blotting paper involves__________?
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A. Viscosity of ink
B. Capillary action phenomenon
C. Diffusion of ink through the blotting
D. Siphon action
B. Capillary action phenomenon
Materials for rain-proof coats and tents owe their water proof properties to________?
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A. Surface tension
B. Viscosity
C. Specific gravity
D. Elasticity
A. Surface tension
A satellite moving round the earth with a uniform speed has____________?
10
A. An accelerated motion
B. No acceleration at all
C. Uniform acceleration
D. Uneven acceleration
C. Uniform acceleration
For being able to see three-dimensional pictures we have to use_________?
3
A. A binocular
B. A camera
C. An epidiascope
D. A stereoscope
D. A stereoscope
A stereoscope is a device that allows us to see three-dimensional images. It does this by presenting two slightly different images to each eye. Our brains then combine these images to create the illusion of depth.
Binoculars are used to see objects that are far away, but they do not create the illusion of depth. A camera is used to take pictures, but it does not allow us to see three-dimensional images. An epidiascope is a device that projects images onto a screen, but it does not create the illusion of depth.
Water has maximum density at____________?
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A. 0°C
B. 4°C
C. 4° K
D. 4.8°C
B. 4°C
The theory of Expanding Universe was first propounded by____________?
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A. Einstein
B. Newton
C. Gahleo
D. Hubble
D. Hubble
Edwin Hubble was an American astronomer who made the first observations that showed that the universe is expanding. In 1929, he published a paper that showed that the light from distant galaxies was shifted to the red end of the spectrum. This shift, called redshift, is caused by the expansion of the universe. Hubble’s discovery showed that the universe is not static, as had been thought previously, but is instead expanding.
Hubble’s discovery has had a profound impact on our understanding of the universe. It has led to the development of the Big Bang theory, which is the current prevailing model for the evolution of the universe. The Big Bang theory states that the universe began with a very hot, dense state and has been expanding and cooling ever since. Hubble’s discovery is one of the most important observations in the history of astronomy.
An instrument to detect the purity of milk is____________?
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A. Lactometer
B. Hygrometer
C. Manometer
D. Sonometer
A. Lactometer
Coulomb is the scientific unit to measure?
3
A. Velocity
B. Temperature
C. Mass
D. None OF These
D. None OF These
The correct answer is D. None of these.
A coulomb is the International System of Units (SI) unit of electric charge. It is the charge (symbol: Q or q) transported by a constant current of one ampere in one second. It is named after Charles-Augustin de Coulomb. One coulomb is equal to the charge of approximately 6.241509×1018 protons.
Velocity is measured in meters per second. Temperature is measured in degrees Celsius, Fahrenheit, or Kelvin. Mass is measured in kilograms.
Who proposed this concept “All motion is relative”?
2
A. Albert Einstein
B. John Kepler
C. Galileo Galilie
D. None
A. Albert Einstein
The field of specialization of famous Muslim scientist Abu Usman Aljahiz was?
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A. Botany
B. Zoology
C. Astronomy
D. None
B. Zoology
Albatros is__________?
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A. A sea bird
B. A beetle
C. A fruit
D. None
A. A sea bird
If you describe something or someone as an albatross around your neck, you mean that they cause you great problems from which you cannot escape, or they prevent you from doing what you want to do.
The sunlight can reach a depth of___________meters in the ocean
7
A. 80
B. 200
C. 120
D. None
B. 200
The biggest planet in our solar system is___________?
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A. Venus
B. Pluto
C. Jupiter
D. None
C. Jupiter
The biggest species of the cat family is___________?
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A. Tiger
B. Lion
C. Leopard
D. None
A. Tiger
Which group of animals has heterogametic females?
2
A. Domestic fowl
B. Earthworm
C. Rabbit
D. None
B. Earthworm
The dominant phase of life cycle in these organism is haploid?
4
A. Mosses
B. Bacteria
C. Protozoa
D. None
A. Mosses
Mosses are a type of plant that have a haploid dominant life cycle. This means that the majority of the moss plant is haploid, with only the zygote being diploid. The haploid phase of the moss life cycle begins with the germination of a spore. The spore develops into a gametophyte, which is the haploid plant. The gametophyte produces gametes, which are haploid sex cells. The gametes fuse to form a zygote, which is the only diploid cell in the moss life cycle. The zygote develops into a sporophyte, which is the diploid plant. The sporophyte produces spores, which are haploid cells. The spores are released and germinate, starting the life cycle over again.
Bacteria are prokaryotes, which means that they do not have a nucleus or other membrane-bound organelles. Bacteria have a haploid life cycle, but they do not have a dominant phase. Protozoa are eukaryotes, which means that they have a nucleus and other membrane-bound organelles. Protozoa have a haploid life cycle, but they do not have a dominant phase.
The atmosphere of moon consists of______________?
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A. 90% Hydrogen, 10% Nitrogen
B. 80%Nitrogen, 20% Hydrogen
C. 60% Nitrogen, 40%inert gases
D. None
C. 60% Nitrogen, 40%inert gases
Several elements have been detected in the lunar atmosphere. Detectors left by Apollo astronauts have detected argon-40, helium-4, oxygen, methane, nitrogen, carbon monoxide and carbon dioxide
The chemical name of quartz is:
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A. Silicon Dioxide
B. Stannous Oxide
C. Aluminium Oxide
D. None
A. Silicon Dioxide
Which month of calendar year can lack a new moon?
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A. December
B. February
C. May
D. None
B. February
Deuterium differs from Hydrogen in having:
0
A. Different atomic number but same atomic weight
B. Different atomic number and different atomic weight
C. Same atomic number and different atomic weight
D. None
C. Same atomic number and different atomic weight
One of the following is a water soluble vitamin?
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A. Vitamin A
B. Vitamin D
C. Vitamin K
D. None
D. None
Vitamins are organic compounds that are essential to human health. They are classified into two groups: water-soluble vitamins and fat-soluble vitamins. Water-soluble vitamins dissolve in water and are not stored in the body. They are excreted in the urine and must be replaced daily. Fat-soluble vitamins dissolve in fat and are stored in the body. They are not excreted in the urine and can be stored for long periods of time.
Vitamin A, Vitamin D, and Vitamin K are all fat-soluble vitamins. Vitamin A is essential for vision, skin, and bone health. Vitamin D is essential for bone health and immune function. Vitamin K is essential for blood clotting.
Water-soluble vitamins include Vitamin C, Vitamin B1 (thiamine), Vitamin B2 (riboflavin), Vitamin B3 (niacin), Vitamin B5 (pantothenic acid), Vitamin B6 (pyridoxine), Vitamin B7 (biotin), Vitamin B9 (folate), and Vitamin B12 (cobalamin). Vitamin C is essential for the immune system and collagen production. Vitamin B1 is essential for energy metabolism. Vitamin B2 is essential for energy metabolism and cell function. Vitamin B3 is essential for energy metabolism and skin health. Vitamin B5 is essential for energy metabolism and hormone production. Vitamin B6 is essential for energy metabolism and nerve function. Vitamin B7 is essential for energy metabolism and hair, skin, and nail health. Vitamin B9 is essential for DNA synthesis and cell division. Vitamin B12 is essential for DNA synthesis and nerve function.
Equator passes through one of these countries___________?
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A. Saudi Arabia
B. Italy
C. Japan
D. None
D. None
The Equator passes through 13 countries: Ecuador, Colombia, Brazil, Sao Tome & Principe, Gabon, Republic of the Congo, Democratic Republic of the Congo, Uganda, Kenya, Somalia, Maldives, Indonesia and Kiribati. At least half of these countries rank among the poorest in the world.
Anti Diuretic hormone is secreted by one of the following glands?
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A. Pituitary
B. Pancreas
C. Thyroid
D. None
A. Pituitary
Basha Dam is to be constructed on___________?
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A. River Sutlaj
B. River Jhelum
C. River Chenab
D. None
D. None (On Indus River in Gilgit-Baltistan)
UV light falls in the category of___________?
3
A. Ionizing Radiations
B. Non Ionizing Radiation
C. Visible light
D. None
A. Ionizing Radiations
The earth’s ___________ is divided into 15 major plates of various sizes
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A. Mesosphere
B. Stratosphere
C. Lithosphere
D. None
C. Lithosphere
One of these scientists formulated basic laws of Geometry?
5
A. Pythagorus
B. Archimedes
C. Aristotle
D. None
A. Pythagorus
Pythagoras was an ancient Greek philosopher and mathematician who lived from c. 570 to c. 495 BC. He is best known for his work in geometry, including the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. Pythagoras also made important contributions to the study of numbers, music, and astronomy.
Phosphorus is an essential component of one of the following biological molecules:
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A. Amino acids
B. Nucleic acids
C. Carbohydrates
D. None
B. Nucleic acids
He was the first scientist to prove that Planets move around the sun?
3
A. Archimedes
B. Galileo Galilei
C. John Kepler
D. None
B. Galileo Galilei
Atom is made up of____________different kinds of subatomic particles:
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A. Three
B. Two
C. Four
D. None
A. Three
An atom is the smallest unit of matter that makes up a chemical element. It is made up of three subatomic particles: protons, neutrons, and electrons. Protons and neutrons are found in the nucleus of the atom, while electrons orbit around the nucleus. The number of protons in an atom determines its atomic number, while the number of protons and neutrons in an atom determines its atomic mass. The number of electrons in an atom determines its chemical properties.
The alpha particles are compact clusters of______________?
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A. Electron and Proton
B. Two Protons and two Neutrons
C. Three protons and three Neutrons
D. None
B. Two Protons and two Neutrons
The Beta particles are fast moving___________?
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A. Protons
B. Electrons
C. Neutrons
D. None
B. Electrons
One of the following countries produces maximum energy from atomic reactors?
2
A. France
B. USA
C. UK
D. none
B. USA
The unit to measure the quantity of Ozone in atmosphere is?
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A. Dobson
B. Dalton
C. Cuolomb
D. none
A. Dobson
The severity of 2005 earthquake in Pakistan on Richter scale was ?
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A. 6.9
B. 7.6
C. 7.1
D. none
B. 7.6
Geiger-Muller counter is used to detect__________?
1
A. Protons
B. Neutrons
C. Photons
D. none
A. Protons
Vacuum tubes have been replaced by__________?
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A. Conductors
B. Diodes
C. Transistors
D. None of these
C. Transistors
It is a secondary plant nutrient?
1
A. Nitrogen
B. Phosphorus
C. Sulphur
D. none
C. Sulphur
An area of microbiology that is concerned with the occurence of disease in human population is?
2
A. Immunology
B. Paracitology
C. Epidemiology
D. none
C. Epidemiology
The number of electrons of a neutral atom is automatically known if one knows the?
0
A. Atomic number
B. Atomic weight
C. Number of orbitals
D. none
A. Atomic number
Which of the following is not an enzyme?
0
A. Chemotrypsin
B. Secretin
C. Pepsin
D. none
B. Secretin
Secretin is a hormone that is secreted by the small intestine in response to the presence of food. It stimulates the pancreas to secrete bicarbonate and digestive enzymes, and it also inhibits gastric acid secretion. Secretin is a peptide hormone, which means that it is made up of a chain of amino acids.
Chymotrypsin and pepsin are both enzymes that are involved in the digestion of protein. Chymotrypsin is secreted by the pancreas, while pepsin is secreted by the stomach. Both enzymes break down protein into smaller peptides and amino acids.
Enzymes are proteins that catalyze chemical reactions. They are essential for life, as they speed up the rate of chemical reactions that would otherwise be too slow to sustain life. Enzymes are found in all living things, and they are responsible for a wide variety of biological processes.
It is impossible for a type of O+ baby to have a type of____________mother:
1
A. AB-
B. O-
C. O+
D. none
A. AB-
Serum if blood plasma minus its?
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A. Calcium ions
B. Clotting proteins
C. Globulins
D. none
B. Clotting proteins
Serum is the liquid part of blood that remains after blood has clotted. It is composed of water, electrolytes, and proteins. Clotting proteins are removed from serum during the clotting process.
Serum is used in a variety of medical tests, including blood typing, blood sugar testing, and cholesterol testing. It is also used to make vaccines and other medications.
Serum is a valuable resource that is used to improve the health of people around the world.
The autonomic nervous system innervates all of these except?
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A. Cardiac muscles
B. Skeletal muscles
C. Smooth muscles
D. none
B. Skeletal muscles
The damage to the_________nerve could result in the defect of the eye movement:
1
A. Optic
B. Trigeminal
C. Abducens
D. none
C. Abducens
Which of these is not a region of the spinal cord?
1
A. Thoracic
B. Pelvic
C. Lumbar
D. none
B. Pelvic
The shape of the external ear is due to____________?
0
A. Elastic cartilage
B. Fibrocartilage
C. Articular cartilage
D. none
A. Elastic cartilage
When a patient’s immune system becomes reactive to a drug, this is an example of?
0
A. Super infection
B. Drug resistance
C. Allergy
D. none
C. Allergy
What is the smallest unit of heredity?
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A. Chromosomes
B. Gene
C. Nucleotides
D. none
B. Gene
The approximate intensity level of the sound which can cause damage to the ear drum is?
0
A. 20 dB
B. 60 dB
C. 100 dB
D. 160 dB
C. 100 dB
Fuse wire is made of_____________?
3
A. 63% tin and 37% lead
B. 63% lead and 37% tin
C. 63% tin and 37% aluminum
D. 63% lead and 37% aluminum
A. 63% tin and 37% lead
Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere?
10
A. Carbon dioxide
B. Chlorofluorocarbons
C. Nitrogen oxides
D. Methane
B. Chlorofluorocarbons
Steering of a car involves?
0
A. A single force
B. Two forces acting in the same direction
C. Two forces acting along different lines and in opposite direction.
D. A pair of forces acting along the same line and in opposite direction
D. A pair of forces acting along the same line and in opposite direction
The property by virtue of which metals can be beaten into thin sheets is known as?
0
A. Ductility
B. Malleability
C. Conductivity
D. Density
B. Malleability
The sky appears blue because the earth’s atmosphere __________?
2
A. Scatters blue light
B. Reflects blue light
C. Transmits blue light
D. Has actual blue cover
A. Scatters blue light
The sky appears blue because of a phenomenon called Rayleigh scattering. This scattering occurs when sunlight hits the atmosphere and is scattered in all directions by the tiny molecules of air. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
When the Sun is low in the sky, its light has to travel through more of the atmosphere to reach us. The longer journey through the atmosphere allows for more of the blue light to be scattered, leaving behind the warmer colors like red and orange. This is why sunrises and sunsets are often so colorful.
The sky is not actually blue, but it appears blue because of the way that sunlight interacts with the atmosphere.
A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to__________?
0
A. Prop him up if he falls
B. Spread out his weight and reduce the pressure on the rope
C. Add extra weight to keep the rope tightly stretched
D. To keep the Center of gravity always above vertically above the rope
D. To keep the Center of gravity always above vertically above the rope
When water is filled in a bottle and is allowed to freeze, the bottle breaks because
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A. Water expands on freezing
B. Bottle contracts at freezing point
C. temperature outside the bottle is less than that inside the bottle.
D. None of the above
A. Water expands on freezing
People living in high altitudes (like mountains) usually have a _________?
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A. smaller number of Red Blood Cells
B. larger number of Red Blood Cells
C. smaller number of White Blood Cells
D. larger number of White Blood Cells
B. larger number of Red Blood Cells
Copper is used in the production of___________?
0
A. Brick kilns
B. Children toys
C. Kitchen utilities
D. Electric wires
D. Electric wires
The blue colour of clear sky is due to_______________?
0
A. Reflection of light
B. Refraction of light
C. Diffraction of light
D. Dispersion of light
D. Dispersion of light
A device that converts mechanical energy into electric energy is called_______?
0
A. Motor.
B. Transformer.
C. Coil.
D. Generator.
D. Generator.
_________ is anything that takes up space and has mass.
0
A. Matter
B. Gravity
C. Energy
D. Plasma
A. Matter
All matter is made of ___________?
0
A. Air
B. Water
C. Vibrations
D. Atoms
D. Atoms
What are considered the building blocks of matter?
0
A. Molecules
B. Protons
C. Elements
D. Atoms
D. Atoms
What are the three subatomic particles of an atom?
0
A. Protons,Neutrons & Electrons
B. Protons,Nucleus & Electrons
C. Protons,Nucleus & Elements.
D. Elements,Nucleus & Protons
A. Protons,Neutrons & Electrons
The protons and neutrons are found in the center of the atom, which is called the _________of the atom?
0
A. Nucleus
B. Headquarters
C. Hub
D. None of These
A. Nucleus
_____________ are positively (+) charged particles?
4
A. Neutrons
B. Electrons
C. Protons
D. None of These
C. Protons
\_\_\_\_\_\_\_\_\_\_\_are negatively (-) charged particles of an atom? 0
A. Protons
B. Neutrons
C. Electrons
D. None of These
C. Electrons
____________ have no charge?
0
A. Neutrons
B. Protons
C. Electrons
D. None of These
A. Neutrons
Elements are made of _________?
0
A. Atoms
B. Molecules
C. H2O
D. Compounds
A. Atoms
SI unit of time is_________?
0
A. second
B. kilo gram
C. meter
D. volt
A. second
The speed of light is __________?
0
A. 280,000 km/s
B. 300,000 km/s
C. 320,000 km/s
D. none of these
B. 300,000 km/s
The soul of chemistry is dealing with___________?
2
A. Internal structural changes in matter
B. Composition of matter
C. Properties of matter
D. Composition and properties of matter
D. Composition and properties of matter
which one is the most common disease?
0
A. Dental
B. Leprosy
C. Headache
D. Migraine
A. Dental
Orange belongs to the family
0
a. Malvaceae
b. Rotaceae
c. Rutaceae
d. Composite
c. Rutaceae
Oranges belong to the genus Citrus, which is in the family Rutaceae. This family includes a wide variety of plants, including citrus fruits, herbs, and trees. Some other common members of the Rutaceae family include lemons, limes, grapefruits, and citrons.
Vertebral Column in human beings consists of how many vertebrae?
0
A. 5
B. 10
C. 12
D. 33
D. 33
