1098 + Mcqs in Science McqOptions

1.	The tiny opening surrounded by guard cells under the leaf is known as
A.	stigma
B.	stomata
C.	leaves
D.	pollen grain
Answer» C. leaves

Discussion

2.	The process for metabolism, energy and reproduction is generally known as
A.	photosynthesis
B.	respiration
C.	transpiration
D.	organism
Answer» C. transpiration

Discussion

3.	Gaseous exchange in plants take place through
A.	epidermis
B.	cuticle
C.	lenticel
D.	stomata
Answer» E.

Discussion

4.	Air is important on earth because it has necessary components essential for the life of
A.	plants
B.	animals
C.	organism
D.	plants, animals and other organisms
Answer» E.

Discussion

5.	The percentage composition of oxygen in air is
A.	21%
B.	31%
C.	41%
D.	51%
Answer» B. 31%

Discussion

6.	In humid areas, the water vapor content is
A.	higher
B.	lower
C.	constant
D.	none of them
Answer» B. lower

Discussion

7.	The sphere that prevent the ultraviolet rays from sun is known as
A.	exosphere
B.	troposphere
C.	atmosphere
D.	stratosphere
Answer» D. stratosphere

Discussion

8.	The left over gas after the process of combustion is generally
A.	oxygen
B.	argon
C.	nitrogen
D.	carbon dioxide
Answer» D. carbon dioxide

Discussion

9.	The sharp vision of close objects but blur vision of distant objects is known as
A.	blur vision
B.	farsighted
C.	nearsighted
D.	refractive error
Answer» D. refractive error

Discussion

10.	Our sense of smell also helps us recognize the
A.	tastes
B.	temperature
C.	environment
D.	time
Answer» B. temperature

Discussion

11.	Optic nerves carry impulses to the brain to help us in good
A.	waves
B.	volume
C.	vision
D.	smell
Answer» D. smell

Discussion

12.	The organs that process the impulses and send them to the brain for a suitable response are known as
A.	nervous system
B.	sense organ
C.	Circulatory system
D.	endocrine glands
Answer» C. Circulatory system

Discussion

13.	The bad affect of blur vision of distant objects is known as
A.	nearsighted
B.	refractive error
C.	blur vision
D.	farsightedness
Answer» B. refractive error

Discussion

14.	The major use of nitrogen is production of
A.	acid
B.	ammonia
C.	nitrate
D.	sulphate
Answer» C. nitrate

Discussion

15.	Nitrogen gas and nitrogen compounds, both have very important
A.	industrial uses
B.	domestic uses
C.	space uses
D.	none of them
Answer» B. domestic uses

Discussion

16.	The most abundant element is oxygen within the
A.	Earth's crust
B.	moon
C.	mars
D.	none of them
Answer» B. moon

Discussion

17.	The process in which energy is released by the combination of glucose and oxygen is known as
A.	digestion
B.	photosynthesis
C.	respiration
D.	rusting
Answer» D. rusting

Discussion

18.	Both gas and liquids are fluids. Fluids are substances which don't have fixed
A.	shape
B.	color
C.	style
D.	size
Answer» B. color

Discussion

19.	Milk and curry left over can be turned into sour n spoiled at
A.	high temperature
B.	very low temperature
C.	room temperature
D.	constant temperature
Answer» D. constant temperature

Discussion

20.	Microbes can live in
A.	living things
B.	non-living things
C.	both a and b
D.	dead bodies
Answer» D. dead bodies

Discussion

21.	Bacteria which is present in raw or undercooked meat, eggs, sea food and unpasteurized milk is
A.	E.coli
B.	salmonella
C.	staphylococcus
D.	cyano bacteria
Answer» C. staphylococcus

Discussion

22.	Plant of tobacco is attacked by virus
A.	tobacco virus
B.	tobacco mosaic virus
C.	tobacco mosaic
D.	mosaic virus
Answer» C. tobacco mosaic

Discussion

23.	Agents in infectious diseases responsible are called
A.	germs
B.	cells
C.	virus
D.	bacteria
Answer» B. cells

Discussion

24.	AIDS, Rubella, influenza, mumps and hepatitis is caused by
A.	virus
B.	bacteria
C.	fungi
D.	poison
Answer» B. bacteria

Discussion

25.	Other name for living things is
A.	man
B.	animal
C.	organism
D.	micro-organism
Answer» D. micro-organism

Discussion

26.	Microorganisms are
A.	tiny
B.	big
C.	medium
D.	larger
Answer» B. big

Discussion

27.	Medicines are used to
A.	prevent diseases
B.	treat diseases
C.	both a and b
D.	kill people
Answer» D. kill people

Discussion

28.	The dead organic waste matter is known as
A.	carne
B.	food
C.	plant
D.	detritus
Answer» E.

Discussion

29.	A bird which remove ticks and other skin parasites from skin of any mammal like zebra is known as
A.	woodpecker
B.	oxpecker
C.	eagle
D.	crow
Answer» C. eagle

Discussion

30.	Source of water are sparse and may be found after a hundred miles in
A.	desert
B.	mountains
C.	tropical rainforest
D.	plains
Answer» B. mountains

Discussion

31.	The physical environments facing organisms living in aquatic and land habitats are very
A.	same
B.	different
C.	common
D.	none of them
Answer» C. common

Discussion

32.	Organism that eats another organism is known as
A.	Prey
B.	Predator
C.	animal
D.	organism
Answer» C. animal

Discussion

33.	Respiratory system contains organs necessary for the process of
A.	photosynthesis
B.	respiration
C.	rusting
D.	combustion
Answer» C. rusting

Discussion

34.	Oxygen is used in the manufacture of
A.	glass
B.	medicine
C.	metal
D.	chemical
Answer» D. chemical

Discussion

35.	People having respiratory problems like asthma, are dosed medically with
A.	calcium
B.	oxygen
C.	nitrogen
D.	magnesium
Answer» C. nitrogen

Discussion

36.	The process of trapping some of the heat from the sun to maintain the life on earth is known as
A.	equilibrium
B.	greenhouse effect
C.	none of them
D.	global warming
Answer» C. none of them

Discussion

37.	In respiration glucose and oxygen combine together to form
A.	carbon dioxide & water
B.	oxygen & water
C.	many gases
D.	nitrogen & oxygen
Answer» B. oxygen & water

Discussion

38.	Hydrogen is also used in
A.	paint industries
B.	fertilizer
C.	rocket fuel
D.	all of them
Answer» E.

Discussion

39.	A common method of separating an insoluble solid from a liquid is known as
A.	distillation
B.	filtration
C.	evaporation
D.	sublimation
Answer» C. evaporation

Discussion

40.	When a gas is condensed below its boiling point, its state changes into
A.	mineral
B.	solid
C.	gas
D.	liquid
Answer» E.

Discussion

41.	Simple chromatography is carried out on
A.	napkin
B.	book
C.	paper
D.	tissue paper
Answer» D. tissue paper

Discussion

42.	The shiny appearance is found in a
A.	metal
B.	transparent
C.	non-metal
D.	solid
Answer» B. transparent

Discussion

43.	Laser surgery changes the shape of the eye by the use of
A.	glasses
B.	lens
C.	medicine
D.	laser beam
Answer» E.

Discussion

44.	A thin, semi-transparent, flexible membrane is known as
A.	ear lobe
B.	ear canal
C.	ear drum
D.	pinna
Answer» D. pinna

Discussion

45.	Something that causes a response is known as
A.	senses
B.	stimuli
C.	sensor
D.	reflex
Answer» C. sensor

Discussion

46.	Contact lenses are soft, transparent lenses that float on
A.	cornea
B.	pupil
C.	sclera
D.	retina
Answer» B. pupil

Discussion

47.	Part of eye that refracts light towards the retina and changes the shape according to the distance of object is known as
A.	retina
B.	lens
C.	iris
D.	cornea
Answer» C. iris

Discussion

48.	A group of organs that works together to convert food into basic components for assimilation is known as
A.	skeletal system
B.	respiratory system
C.	nervous system
D.	digestive system
Answer» E.

Discussion

49.	Tissues that provide movement of body are known as
A.	nerve tissue
B.	epidermal tissues
C.	muscle tissue
D.	epithelial tissue
Answer» D. epithelial tissue

Discussion

50.	Blood can be examined by an automated machine known as
A.	telescope
B.	microscope
C.	microphone
D.	Polari meter
Answer» C. microphone

Discussion

Explore topic-wise MCQs in Testing Subject.

The tiny opening surrounded by guard cells under the leaf is known as

The process for metabolism, energy and reproduction is generally known as

Gaseous exchange in plants take place through

Air is important on earth because it has necessary components essential for the life of

The percentage composition of oxygen in air is

In humid areas, the water vapor content is

The sphere that prevent the ultraviolet rays from sun is known as

The left over gas after the process of combustion is generally

The sharp vision of close objects but blur vision of distant objects is known as

Our sense of smell also helps us recognize the

Optic nerves carry impulses to the brain to help us in good

The organs that process the impulses and send them to the brain for a suitable response are known as

The bad affect of blur vision of distant objects is known as

The major use of nitrogen is production of

Nitrogen gas and nitrogen compounds, both have very important

The most abundant element is oxygen within the

The process in which energy is released by the combination of glucose and oxygen is known as

Both gas and liquids are fluids. Fluids are substances which don't have fixed

Milk and curry left over can be turned into sour n spoiled at

Microbes can live in

Bacteria which is present in raw or undercooked meat, eggs, sea food and unpasteurized milk is

Plant of tobacco is attacked by virus

Agents in infectious diseases responsible are called

AIDS, Rubella, influenza, mumps and hepatitis is caused by

Other name for living things is

Microorganisms are

Medicines are used to

The dead organic waste matter is known as

A bird which remove ticks and other skin parasites from skin of any mammal like zebra is known as

Source of water are sparse and may be found after a hundred miles in

The physical environments facing organisms living in aquatic and land habitats are very

Organism that eats another organism is known as

Respiratory system contains organs necessary for the process of

Oxygen is used in the manufacture of

People having respiratory problems like asthma, are dosed medically with

The process of trapping some of the heat from the sun to maintain the life on earth is known as

In respiration glucose and oxygen combine together to form

Hydrogen is also used in

A common method of separating an insoluble solid from a liquid is known as

When a gas is condensed below its boiling point, its state changes into

Simple chromatography is carried out on

The shiny appearance is found in a

Laser surgery changes the shape of the eye by the use of

A thin, semi-transparent, flexible membrane is known as

Something that causes a response is known as

Contact lenses are soft, transparent lenses that float on

Part of eye that refracts light towards the retina and changes the shape according to the distance of object is known as

A group of organs that works together to convert food into basic components for assimilation is known as

Tissues that provide movement of body are known as

Blood can be examined by an automated machine known as