General Science.
Mcqs For Job preparation
Q. 1.Water evaporates from tiny pores on lower part of leaf. These pores are known as.
1. cuticles
2. lenticels
3. epidermis
*4. stomata*
Q. 2.In roots, vascular bundles are
1. at left
2. at right
*3. in center*
4. at the top
Q. 3.Carbon dioxide and oxygen move in plants by.
1. xylem
2. phloem
*3. diffusion*
4. active transport
Q. 4.Most of mineral salts in soil enter roots by process of
1. diffusion
2. osmosis.
*3. active transport*
4. respiration.
Q. 5.lf an ink drop is dropped in water and it spreads equally in water. It is called
*1. diffusion*
2. osmosis
3. active transport
4. respiration
Q. 6. In plants roots take up water by process of
1. diffusion
*2. osmosis*
3. active
4. respiration.
Q. 7. Food is carried away from leaves to other parts of plant by
1. dead cells of xylem
*2. sieve tubes of phloem*
3. companion cells of phloem
4. root pressure in xylem.
Q. 8 .Process in which water and mineral salts are moved from roots to leaves by xylem is generally known as
*1. transpiration*
2. translocation
3. respiration
4. photosynthesis.
Q. 9.Process that requires energy to move particles from one region to other is
1. osmosis
*2. active transport*
3. transpiration
4. translocation.
Q. 10.Some amount of mineral salts enter roots by process of
*1. diffusion*
2. osmosis
3. active transport
4. respiration.
Q. 11.More force is required to pull water and minerals up to leaves of
1. small stems of growing plants
*2. tree trunks*
3. herbs
4. ferns.
Q. 12.As wind blows, it takes water vapors away from plant and decreases humidity. This process
*1. increases the rate of transpiration*
2. decreases the rate of transpiration
3. keeps the rate of transpiration same
4. may increase or decrease the rate of transpiration.
Q. 13.Root cells contain a large amount of
1. food only
2. food and minerals
*3. minerals and sugar*
4. food and sugar.
Q. 14.Most of oxygen from soil is dissolved in.
1. minerals
*2. water*
3. mineral salts
4. roots hair.
Q. 15.Flow of water and mineral salts from roots to leaves by xylem is known as
*1. translocation stream*
2. transpiration stream
3. respiration stream
4. photo stream.
Q. 16.Xylem is a vessel in plants which takes
*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
Q .17.When temperature of surroundings increases, speed of transpiration is also
*1. increased*
2. decreased
3. remained same
4. remained unchanged.
Q. 18.Movement of food in phloem depends on
*1. living processes in phloem*
2. sieve plates of phloem
3. companion cells of phloem
4. dead cells of phloem.
Q. 19.When photosynthesis is faster than rate of respiration
1. is also increased
2. is decreased
*3. is reversed*
4. is remain unchanged.
Q. 20.0xygen in water is absorbed by roots through
1. stomata
2. lenticels
*3. root hairs*
4. cuticles.
Q. 21.A membrane that lets some particles to pass through is known as
1. total permeable membrane
*2. semi permeable membrane*
3. cell wall
4. tonoplast.
Q. 22.For transportation of food and minerals, plants have
1. one transport systems
*2. two transport system*
3. three transport systems
4. four transport systems
Q. 23.Xylem' and 'phloem' vessels are found in
1. leaves only
2. stem only
*3. roots only*
4. whole plant
Q. 24.Transportation of food and mineral salts from leaves to all other parts of plant by phloem is known as
*1. translocation*
2. transpiration
3. respiration
4. photosynthesis.
Q. 25.Humus can also be used by plants as a source of
1. oxygen gas
2. carbon dioxide gas
*3. fertilizers*
4. nitrogen gas.
Q. 26.Birds and animals that feed on dead decaying organisms are called
*1. scavengers*
2. primary producers
3. primary consumers
4. secondary consumers.
Q. 27.A place where organisms can take shelter and reproduce is known as
1. ecosystem
*2. habitat*
3. community
4. both b and c
Q. 28.Animals which depend on primary consumers are known as 1. producers
rs primary consumers
*3. secondary consumers*
4. tertiary consumer
Q. 29.Polar bears have thick fur so that they can.
1. camouflage
*2. keep themselves warm* 3. dry faster
4. stay alive and healthy.
Q. 30.Dissolved minerals and water is taken from roots to leaves by vascular bundle named.
*1. xylem*
2. phloem
3. vein
4. stem
Q. 31.'Phloem' vessels contain
*1. living cells*
2. dead cells
3. arranged but dead cells
4. disorganized but living cells.
Q. 32.Xylem' vessels contain
1. living cells
*2. dead cells*
3. arranged cells but dead
4. disorganized cells but living.
Q. 33.Main force that pulls water and dissolved mineral salts from roots to leaves is due to process of
1. translocation
*2. transpiration*
3. respiration
4. photosynthesis.
Q. 34.Stem strong due to
1. dead cells in the xylem 2. living cells in the phloem
*3. fibres in the vessels*
4. hardness of the vascular bundles.
Q. 35.During respiration, oxygen is
1. given out
*2. taken in*
3. exchanged
4. transferred to roots.
Q. 36.Stems kept on ground due to the
*1. strength of roots*
2. strength of leaves
3. strength of soil
4. strength of flowers.
Q. 37.Phenomenon of movement of particles from higher concentration to lower concentration without use of energy is known as
*1. diffusion*
2. osmosis
3. active transport
4. respiration.
Q. 38.Several layers of cells at tip of root form
1. small roots
*2. root caps*
3. root hairs
4. all of them.
Q. 39.During respiration, carbon dioxide is
1. exchanged
2. taken in
*3. given out*
4. transferred to roots.
Q. 40.Smallpenings in pits of bark is known as
1. cuticles
*2. lenticels*
3. hard stomata
4. hard pores.
Q. 41.Tremendous force which pulls water and mineral salts up to leaves can pull these contents to height of
1. 20 meters
2. 30 meters
3. 40 meters
*4. 50 meters.*
Q. 42.Other link in a food chain besides producer is known as
*1. consumer*
2. scavenger
3. decomposer
4. all of them
Q.43.Small creatures that breakdown decayed matter into further smaller pieces are called 1. scavengers
*2. detritivores*
3. primary consumers
4. primary producers.
Q. 44.Two correct examples of a habitat are
*1. streams and caves*
2. Ponds and deserts
3. Water and air
4. Grass and den.
Q. 45.White coat of polar bears helps them to
*1. camouflage*
2. look big
3. dry faster
4. stay healthy.
Q. 46.To make sure that animals could get enough of what they need to survive, they have to
*1. compete*
2. survive
3. reproduce
4. grow bigger.
Q. 47.All food chains begin with
1. primary consumers
2. producers
3. secondary consumers
*4. all of them*
Q. 48.Basic need for survival is
1. food
*2. water*
3. shelter
4. reproduction
Q. 49.Polar bears have sharp claws and hairy soles for
*1. awesome grip*
2. quick sprinting
3. climbing mountains
4. none of the above.
Q. 50.Energy which is absorbed by green plants, is about
1. 20 percent of sunlight
2. 30 percent of sunlight
3. 40 percent of sunlight
*4. 50 percent of sunlight*
Q. 51.Animals that depend on each other for living are called
1. dependent producers
2. dependent consumers
3. producers
*4. consumers*
Q. 52.Carnivores are always
1. producers
2. primary consumers
*3. secondary consumers*
4. tertiary consumers
Q. 53.Transfer of energy in a food chain is shown by
1. double arrow
2. inverse arrow
*3. straight arrow*
4. curved arrow.
Q. 54.Flow of energy from producers to consumers forms a
1. food ring
*2. food chain*
3. food tie
4. food transfer
Q. 55.Skin keeps itself warm through
1. piece of blanket
2. insulated wool layer
*3. insulated fat layer*
4. insulated protein layer.
Q. 56.During winter, dormant condition of insects is termed as
1. pause
*2. diapause*
3. interrupt
4. respite.
Q. 57.Animals that depend on producers are known as
1. producers
*2. primary consumers*
3. secondary consumers
4. tertiary consumers.
Q. 58.Some predators prey at night like
*1. bears*
2. antelopes
3. owis
4. eagles
Q. 59.To make food, plants need
1. oxygen and water
2. oxygen and glucose
3. carbon dioxide and glucose
*4. carbon dioxide, water and sunlight.*
Q. 60.Main source of energy for a food chain is 1. Producers
2. Soil
3. Fertilizers
*4. Sun*
Q. 61.Right sequence of a food chain is
1. grass, cheetah and rabbit
2. rabbit, grass and cheetah
3. cheetah, rabbit and grass
*4. grass, rabbit and cheetah.*
Q. 62.Herbivores are always
1. producers
2. primary consumers
*3. secondary consumers*
4. tertiary consumers
Q. 63.Swollen stem of cactus is important to
1. absorb more oxygen
2. absorb more carbon dioxide
*3. absorb more water*
4. absorb more sunlight.
Q. 64.Plants growing in drier conditions tend to have small numbers of stomata on their lower leaf surface to save
*1. water loss*
2. stored sunlight
3. to prevent itself from consumers
4. energy loss.
Q. 65.Fish have gills to absorb
1. water
2. carbon dioxide
3. aquatic plant waste
*4. oxygen.*
Q. 66.Plants can make their own food so they are called
1. primary consumers
2. secondary consumers
*3. producers*
4. heterotrophs.
Q. 67.To find water, cactus plants have
1. thick roots
2. hairy roots
*3. long roots*
4. thÃck shoots.
Q. 68.Body of a fish is
1. flat
*2. streamlined*
3. curved
4. bi-muscular
Q. 69.Balloons are filled with
1. carbon dioxide
2. oxygen
*3. helium*
4. nitrogen
Q. 70.Nitrogen helps in preparation of nitrogen based
1. plants
*2. fertilizers*
3. seeds
4. trees.
Q. 71.For purification water is passed through.
1. colander
2. watch glass
*3. Sand*
4. strainer
Q. 72.A process in which liquid changes into vapor or gas by boiling, is called
1. distillation
2. filtration
*3. evaporation*
4. fractional distillation.
Q. 73.Convex lens is also known as
*1. converging lens*
2. diverging lens
3. dispersing lens
4. conducting lens.
Q. 74.Crystals of dry ice that keep things cold are a solid state of
*1. carbon dioxide*
2. oxygen
3. helium
4. nitrogen
Q. 75.Breakdown or formation of compound involves
1. chemical reaction
2. heating
3. passing electricity through
*4. all of above.*
Q. 76.A separation technique which is used to obtain liquid from a solution by heating, is called
1. fractional distillation.
2. filtration
3. evaporation
*4. distillation.*
Q. 77. Alloys are impure and they make elements more
1. strong
2. hard
*3. soft*
4. both a and b.
Q. 78.When different gases are mixed together to form air, there is
1. chemical reaction
*2. no chemical reaction.*
3. no physical reaction
4. both chemical and physical reaction.
Q. 79.Mixtures are not
1. pure
2. single element.
3. chemical combination
*4. both a and b*
Q. 80.Oxygen rich air is used for
1. scuba diving
2. patients with breathing problems
3. cancer treatment
*4. both a and b*
Q. 81.A substance which is made by mixing two elements without being chemically combined is called a
1. solute
2. compound
*3. mixture*
4. solution.
Q. 82.Water can be separated from mud by help of
1. distillation
*2. filtration*
3. evaporation
4. fractional distillation.
Q. 83.White light is a mixture of
*1. seven colors*
2. nine colors
3. fourteen colors
4. fifteen colors.
Q. 84.Lens in a human eye is
1. convex
2. concave
3. biconcave
*4. biconvex*
Q. 85.lf red, green and blue are mixed together, formed color of light will be ?
1. blue
2. violet
3. indigo
*4. white*
Q. 86. Like sound, light travels as a
*1. wave*
2. heat
3. radiation
4. volume.
Q. 87.lf an object is extremely dense, light
1. passes through it
2. never passes through it
3. leaves it at once
*4. never leaves it.*
Q. 88.An example of a device in which convex lens is used, is
1. mirror
*2. telescope*
3. spectacles
4. contact lenses.
Q. 89.Disk spun on rainbow to join its seven colors in order to make effect of white light is known as
1. Rainbow disk
2. Newton disk
*3. Newton's color disk*
4. Rainbow color disk
Q. 90.Heart is also called
*1. muscular pump*
2. pumping device
3. pumping machine
4. pumping muscle.
Q. 91.Walls of left ventricle are thicker than walls of right ventricle because
*1. it has to pump blood to the whole body*
2. it has to pump the blood to lungs
3. blood reaches this ventricle in huge amount
4. blood reaches this ventricle with extra pressure.
Q. 92.Vessel which takes blood from heart to lungs, is known as
1. renal artery
*2. pulmonary artery*
3. renal vein
4. pulmonary vein.
Q. 93.Tiny vessels link up and form a
1. artery
*2. vein*
3. capillary
4. nerve.
Q. 94.Clot of blood formed in blood vessel is known as.
1. haemophilia
2. anaemia
*3. thrombosis*
4. varicose vein
Q. 95 .'Oxygen' is taken from
1. cells to lungs
2. heart to lungs
*3. lungs to cells*
4. cells to heart
Q. 96.Cells generally known "the army of human body" are
*1. white blood cells*
2. platelets
3. red blood cells
4. antigens.
Q. 97.Artery that carries deoxygenated blood is
1. renal artery
2. hepatic artery
3. mesenteric artery
*4. pulmonary artery.*
Q. 98.Elasticity of red blood cells helps them to 1. pass through capillaries easily
*2. absorb oxygen easily*
3. release carbon dioxide easily
4. move in the veins easily.
Q. 99 .Beating of pulse is due to
*1. energy*
2. flow of blood
3. flow of water
4. oxygen.
Q. 100.Light travels fastest through
*1. vacuum*
2. air
3. solids
4. liquids
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