Q. 1.Producers, consumers and decomposers are dependent on each other for their?
1. growth
2. reproduction
3. breathing
*4. survival.*
Q. 2.The Latin name of sodium:
1. Argentum
*2. Natrium*
3. Aurum
4. Ferrum.
Q. 3.The Latin name of Iron:
1. Argentum
2. Natrium
3. Aurum
*4. Ferrum.*
Q. 4.The Latin name of Tin:.
1. Argentum
*2. Stannum*
3. Aurum
4. Ferrum.
Q. 5.The Latin name of Lead:
*1. Plumbum*
2. Stannum
3. Aurum
4. Ferrum.
Q. 6.Percentage of Carbon dioxide in atmosphere is:
1. .003%
*2. 0.03%*
3. 00.03%
4. 0.3%.
Q. 7.Rocks are made up of
1. soil
2. core
3. mantle
*4. crust*
Q. 8. Vitamin E is important for
1. protecting cells
2. vital tissues protection *3. both a and b*
4. development of bones.
Q. 9.A disease Kwashiorkor is caused by deficiency of
1. vitamins
*2. proteins*
3. carbohydrates
4. fats.
Q. 10.Digestive enzymes includes
1. lipase
2. proteases
3. carbohydrates
*4. all of them*
Q. 11.Compounds which are needed in very small amount but their deficiency lead to scurvy and rickets are
*1. vitamins*
2. proteins
3. carbohydrates
4. fats.
Q. 12.Energy which is stored in food that we eat is only released in cells of body by process of.
*1. respiration*
2. digestion
3. excretion
4. elimination
Q. 13.Chloride ion has number of protons
*1. 17*
2. 18
3. 24
4. 34.
Q. 14.Smaller particles in an atom are called
1. atomic particles
*2. subatomic particles*
3. smaller particles
4. neutral particles.
Q. 15.Chemical symbol represents
*1. chemical formula*
2. molecular formula
3. structural formula
4. atomic formula.
Q. 16.Number of protons in a 'carbon' atom is
*1. 6*
2. 11
3. 12
4. 10
Q. 17.A modern model of an atom shows that electrons are present outside nucleus in region of high
*1. probability*
2. velocity
3. speed
4. energy level.
Q. 18."03" is a chemical formula of
1. oxygen
2. oxides
*3. ozone*
4. acid rain
Q. 19.Ammonia molecule contains one nitrogen atom and three atoms of *1. hydrogen*
2. helium
3. nitrogen
4. carbon.
Q. 20.As compare to hydrogen atom, helium atom is
1. very small
*2. very massive*
3. medium in mass fraction
4. same in volume.
Q. 21.Major part of an atom is
*1. empty*
2. filled
3. charged
4. covered
Q. 22.Rutherford's Model explains that atom has a nucleus which is surrounded by
1. protons
*2. electrons*
3. neutrons
4. nuclear energy
Q. 23.Dalton's model of atom states that an atom is
1. very small
2. hard sphere
3. indivisible.
*4. all of above*
Q. 24.Number of protons and electrons in an atom is
1. different
*2. same.*
3. average
4. constant
Q. 25.Electrons orbiting around nucleus bear
1. positive charge
*2. negative charge*
3. no charge
4. neutral charge
Q. 26. An atom's model that atom is composed of electrons surrounded by a group of positive charge to balance electrons' negative charges is called
*1. Thomson's Model*
2. Rutherford's Model
3. Dalton's Model
4. Bohr's Model.
Q. 27.Positively charged particles of an atom are called
*1. protons*
2. neutrons
3. electrons
4. charges
Q. 28.Many helium atoms join together to form
1. ammonia gas
*2. helium gas*
3. oxygen gas
4. neon gas
Q. 29.Neutrons carry
1. positive charge
2. negative charge
3. neutral charge
*4. no charge.*
Q. 30.Each 'ozone' molecule is made up of three.
*1. oxygen atoms*
2. phosphors atoms
3. carbon dioxide atoms.
4. nitrogen atoms.
Q. 31.An atom is itself an entity and by charge it is.
*1. neutral*
2. positive
3. negative
4. retrograde.
Q. 32.A silver pendant is made up of atoms of
*1. silver*
2. gold
3. platinum
4. metals
Q. 33.Size of a single atom is
1. 1nm
*2. 0.1nm*
3. 0.11nm
4. 1.0nm
Q. 34.Number of atoms which a molecule of sulphur contains, is.
1. 3
*2. 8*
3. 4
4. 5
Q. 35.Under STM, atoms can be.
1. observed
2. manipulate
*3. transferred*
4. both a and b
Q. 36. Number of oxygen atoms in glucose molecule is 6 and in hydrogen molecules is
1. 6
*2. 12*
3. 18
4. 8
Q. 37.0ne carbon atom and one oxygen atom are combined together to form a molecule of
1. oxygen
2. water
3. carbon dioxide
4. carbon monoxide.
Q. 38.Diameter of a 'nucleus' is
*1. 0.00001nm*
2. Inm
3. 0.1nm
4. 0.01nm
Q. 39.Total number of protons in atom of each element is called its
*1. atomic number*
2. atomic mass
3. molecular mass
4. atomic scale.
Q. 40.Smallest particle of an atom which exists, is called
1. matter
*2. atom*
3. proton
4. electron.
Q. 41.Nucleus in an atom consists of
1. protons
2. neutrons
3. electrons
*4. both a and b*
Q. 42.Molecules which contain fixed number of same type of atoms are molecules or
*1. elements*
2. compounds
3. mixtures
4. all of them
Q. 43.Two or more atoms chemically combined together form a
1. atom
*2. molecule*
3. nucleus
4. atomic number
Q. 44. An electrically charged particle which is formed when an atom gains or loses electron is called
*1. ion*
2. charge
3. formula
4. neutron
Q. 45.Number and types of atoms a molecule contain, are shown byits
*1. chemical formula*
2. molecular formula
3. structural formula
4. atomic formula
Q. 46.Fossil fuels are rich in carbon and
1. nitrogen
*2. hydrogen*
3. nitrogen
4. oxygen
Q. 47.Thousands of mirrors or curved metals are used to focus solar energy to make it very hot, in
1. solar cells
2. solar heater
*3. solar furnace*
4. solar battery
Q. 48.Wind is beneficial resource of energy as it doesn't cause
*1. pollution*
2. echo
3. noise
4. sound
Q. 49.Fossils fuel is an important source of energy for
1. transport
2. homes
3. industries
*4. all of them*
Q. 50.To date, most common type of galaxies found in universe, are
1. spiral galaxy
*2. elliptical galaxy*
3. peculiar galaxy
4. none of above
Q. 51.In space besides stars, there is also a huge capacity of dust and
1. asteroids
2. meteoroids
*3. gases*
4. vacuum
Q. 52.Comets and other objects circling around sun is known as
1. galaxy
*2. solar system*
3. milky way
4. cluster
Q. 53.Spinning movement of earth is called
1. revolution
*2. rotation*
3. spinning
4. orbiting.
Q. 54.A greenhouse gas that absorbs energy and maintains earth's temperature is ?
*1. carbon dioxide*
2. oxygen
3. nitrogen
4. argon.
Q. 55.Main constituent in air is
*1. nitrogen*
2. oxygen
3. argon
4. water vapor
Q. 56.In desert areas, water vapor content is
1. different
2. higher
*3. low*
4. constant.
Q. 57.In humid areas, water vapor content is
*1.higher*
2.lower
3.constant
4.none of them
Q. 58.Water vapor is less dense than
1. temperature
*2. air*
3. dust
4. space.
Q. 59.Percentage composition of oxygen in exhaled air is
*1. 16%*
2. 20%
3. 22%
4. 32%
Q. 60.Percentage composition of carbon dioxide in exhaled air is?
1. 8%
*2. 4%*
3. 6%
4. 10%
Q. 61.How many types of teeth:
1. 2
2. 5
*3. 4*
4. 3
Q. 62.Canine teeth help food:
*1. Tear*
2. Grind
3. Chew
4. Chop
Q. 63.Molars help food:
1. Tear
*2. Grind*
3. Chew
4. Chop
Q. 64.Premolars help food:
1. Tear
2. Grind
*3. Chew*
4. Chop.
Q. 65.Incisors help food:
*1. Tear*
2. Grind
3. Chew
4. Cut & chop.
Q. 66.Cold is caused by
1. bacteria
*2. viruses*
3. insects
4. dust.
Q. 67.Number of viruses which an average sneeze can spread in 10 meters area, is
1. 1000
2. 10000
*3. 100000*
4. 1000000
Q. 68.A technique which is used to desalinate water, is
*1. reverse osmosis*
2. distillation
3. filtration
4. heating
Q. 69.Processes that do not require energy for movement of particles are
1. diffusion and free transport
2. osmosis and active transport
*3. diffusion and osmosis*
4. diffusion and active transport
Q. 70.Percentage of transpiration by stomata is
1. 0.2
2. 0.5
3. 0.75
*4. 0.9*
Q. 71.Contents that a plant uses to make food, are
1. water and mineral salts
2. mineral salts and oxygen
*3. water, mineral salts and carbon dioxide*
4. water and oxygen.
Q. 72.Rate of transpiration slows down when plant
1. withers
*2. wilts*
3. dies
4. grows.
Q. 73.To keep fish floating in water, it requires
1. fins
2. tail
*3. swim bladder*
4. feathers.
Q. 74.To swim through water easily, fish have
1. feathers.
2. wings
3. propellers
*4. fins*
Q. 75.A collection of multiple food chains is known as
1. food connection
*2. food web*
3. food tie
4. food cover
Q. 76.How many neuron makes a human brain:
1. 10 millions
*2. 100 millions*
3. 1000 millions
4. 10,000 millions
Q 77.How many layers does the Earth have:
1. 2
2. 3
3. 4
*4. 5*
Q. 78.The moving air is called:
1. Mixed air
2. Compound air
*3. Wind*
4. Breeze
Q. 79.Which of the following gases is used in fire extinguisher:
1. Nitrogen
2. Oxygen
3. Helium
*4. Carbon dioxide.*
Q. 80.Fish have mucus on their overlapping scales to
1. prevent predators
*2. slide through water*
3. absorb oxygen
4. release carbon dioxide
Q. 81.Due to scarce supply of food, in winter animals
1. sleep
2. die
*3. hibernate*
4. migrate.
Q. 82.To keep fish floating in water, it requires
*1. fins*
2. tail
3. swim bladder
4. feathers.
Q. 83.To swim through water easily, fish have
*1. feathers*
2. wings
3. propellers
4. fins
Q. 84.A collection of multiple food chains is known as
1. food connection
2. food web
*3. food tie*
4. food cover.
Q. 85.Fish have mucus on their overlapping scales to
1. prevent predators
*2. slide through water*
3. absorb oxygen
4. release carbon dioxide
Q. 86.Due to scarce supply of food, in winter animals
1. sleep
2. die
3. hibernate
*4. migrate*
Q. 87.'Moles' feed on
1. roundworms
*2. earthworms*
3. mice
4. birds
Q. 88.Leaves of cactus are like small spines to
*1. prevent excess water loss by evaporation*
2. prevent predators from eating
3. prevent excess sunlight to be absorbed
4. None of these
Q. 89.When plants and animals die, they are decomposed by
1. scavengers
*2. detritivores*
3. primary consumers
4. primary producers.
Q. 90.Fur of 'moles' is
1. Hard
*2. spiky*
3. smooth but sticky
4. short and velvet.
Q. 91.Bears have strong legs so that they can
*1. walk long distances in search of food*
2. climb mountains
3. take down preys
4. swim easily
Q. 92. 'Moles' feed on 1. roundworms
2. earthworms
*3. mice*
4. birds.
Q. 93.Leaves of cactus are like small spines to
1. prevent excess water loss by evaporation
2. prevent predators from eating
*3. prevent excess sunlight to be absorbed.*
Q. 94.When plants and animals die, they are decomposed by
*1. scavengers*
2. detritivores
3. primary consumers
4. primary producers.
Q. 95.Tail of fish is important to control its
1. movement
*2. direction*
3. speed
4. sight
Q. 96.Underneath hair of polar bear, color of his skin is
1. pink
2. black
3. brown
4. white.
Q. 97.Bears have sharp teeth to kill
1. birds
2. penguins
3. walrus
4. seals.
Q. 98.Deciduous trees are trees that shed
1. excess water
2. stems
3. roots
4. leaves.
Q. 99.Process in which food substances are moved to rest of plant by 'phloem' is known as
1. transpiration
2. translocation
3. respiration
4. photosynthesis.
Q. 100.Phloem' is a vessel in plants which carries
1. food and minerals to leaves from roots
2. food and minerals to roots from leaves
3. prepared food to other parts from roots
4. prepared food to other parts from leaves.
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