CBSE Class 7 Science Multiple Choice Questions (MCQs) & Answers

CBSE Class 7 Science Multiple Choice Questions(MCQs) & Answers CBSE Class 7 Science QUESTIONS

CBSE Class 7 Science Multiple Choice Questions(MCQs)& Answers

1 When wind speed increases, air pressures
A decreases
B increases
C remains constant
D none of these

Answer: decreases
2 Soil formation is a
A slow process
B fast process
C rapid process
D none of these

Answer: slow process
3 Which soil horizon contains humus?
A A-Horizon
B B-Horizon
C C-horizon
D Bedrock

Answer: A-Horizon
4 Which topsoil is best suited for growing plants
A Sandy soil
B Loamy Soil
C Clayey Soil
D None of these

Answer: Loamy Soil
5 Soil profile refers to an arrangement within a soil of
A its horizontal layout
B vertical layout
C Size of soil particles
D None of these

Answer: its horizontal layout
6 The water holding capacity is the highest in
A sandy soil
B clayey soil
C loamy soil
D mixture of sand and loam

Answer: clayey soil
7 In earthworm, the exchange of gases occurs through ________.
A moist skin
B lungs
C gills
D tracheae

Answer: moist skin
8 Plants breathe through tiny pores in the leaves called ________.
A stomata
B pores
C leaf blade
D trachea

Answer: stomata
9 Organisms which respire in absence of air are called _________.
A microbes
B anaerobes
C aerobes
D none of these

Answer: anaerobes
10 Breathing is a ________ process while respiration is a _______ process.
A physical, chemical
B chemical, physical
C physical, physical
D chemical, chemical

Answer: physical, chemical
11 What is the heart rate of a normal adult human?
A 90-120 times per minute
B 70-80 times per minute
C 40-50 times per minute
D 10-20 times per minute

Answer: 70-80 times per minute
12 Phloem helps in the transport of _________ in plants.
A food
B water
C minerals
D carbon dioxide

Answer: food
13 Vascular tissues that transport water and nutrients in plants are called _________.
A Veins
B Phloem
C Xylem
D Root Hairs

Answer: Xylem
14 The major excretory product in humans is ________
A uric acid
B ammonia
C feaces
D urea

Answer: urea
15 Name the scientist who discovered blood circulation?
A William Harvey
B Isaac Newton
C Christiaan Barnard
D William Thomson

Answer: William Harvey
16 The filtering of blood through an artificial kidney is called ________
A dialysis
B diffusion
C circulation
D transportation

Answer: dialysis
17 Upper chambers of a human heart are called?
A atria
B ventricles
C pulmunory vein
D vena cava

Answer: atria
18 Which component of blood in mammals build up defense against harmful germs enter in the body?
A WBCs
B Platelets
C RBCs
D Plasma

Answer: WBCs
19 The fluid part of the blood is called _______
A Plasma
B Haemoglobin
C RBCs
D WBCs

Answer: Plasma
20 Name the pigment which gives red colour to the blood in mammals.
A Haemoglobin
B Globulin
C Plasma
D Platelets

Answer: Haemoglobin
21 The meter that is used to measure the distance moved by the vehicle is known as _____
A Speedometer
B Odometer
C Chronometer
D Ammeter

Answer: Odometer
22 Amylase enzyme is present in
A bile juice
B saliva
C gastric juice
D pancreatic juice

Answer: saliva
23 Grass is rich in ________ a special kind of carbohydrate which can only be digested by ruminants.
A Glucose
B Cellulose
C Sucrose
D Fructose

Answer: Cellulose
24 An amoeba ingests food with the help of
A Cilia
B Tentacles
C Pseudopedia
D Buccal Cavity

Answer: Pseudopedia
25 Which of the following is not a part of nutrition?
A digestion
B absorption
C assimilation
D excretion

Answer: excretion
26 Which of the following is a ruminant?
A buffalo
B camel
C goat
D all of these

Answer: all of these
27 The inner walls of the small intestine have millions of small finger like projections called
A villi
B trachae
C appendix
D oesophagus

Answer: villi
28 Which of the following MIGHT NOT tell a chemical change has taken place?
A Converting liquid into gas
B Production of heat
C Evolution of gas.
D Light is generated

Answer: Converting liquid into gas
29 Which of the following is NOT a physical property of a substance?
A density
B flammability
C shape
D color

Answer: flammability
30 Which of the following is a chemical change?
A Cooking a vegetable
B Freezing water into ice
C Boiling of Water
D Tearing of Newspaper

Answer: Cooking a vegetable
31 Which of the following is a physical change?
A Heating of Iron
B Burning of Wood
C Rusting of Iron
D Ripening of a fruit

Answer: Heating of Iron
32 Camouflage shown in polar bears is due to
A white fur
B thick fur
C padded feet
D two layers of fat

Answer: white fur
33 Water vapours present in the atmosphere is called
A humidity
B precipitation
C climate
D rain fall

Answer: humidity
34 In India, rainforests are found in which of the following state?
A Assam
B Andhra Pradesh
C Madhya Pradesh
D Kerala

Answer: Assam
35 Birds are adapted to fly because of ___________,
A streamlined body
B light bones
C feathers and wings
D all of these

Answer: all of these
36 Long Inactivity and metabolic depression of animals during winters is known as:
A aestivation
B migration
C evolution
D hibernation

Answer: hibernation
37 In Western Ghats Of India, the Long tailed macaque is also known as _______
A Indian Parrot
B Beard Ape
C Monkey
D Lemurs

Answer: Beard Ape
38 The special features and habits that help an animal survive in its environment are known as _______
A evolutions
B adaptations
C polymorphisms
D hibernation

Answer: adaptations
39 Which of these is specifically an adaptation for cold climates?
A thick fur
B long ears
C sweating glands
D light bones

Answer: thick fur
40 In addition to the rock particles, the soil contains
A air and water
B water and plants
C minerals, organic matter, air and water
D water, air and plants

Answer: minerals, organic matter, air and water
41 Which soil layer is made up of small lumps of rocks?
A A-horizon
B B-horizon
C C-horizon
D Bedrock

Answer: C-horizon
42 Toys, pots, and statues are made up of which soil type?
A Sandy Soil
B Clayey Soil
C Loamy Soil
D None of these

Answer: Clayey Soil
43 Lentils (masoor) and other pulses are grown in which of the following soil type?
A Sandy Soil
B Clayey Soil
C Loamy Soil
D None of these

Answer: Loamy Soil
44 Percolation rate of water is the least in ___________?
A Sandy Soil
B Clayey Soil
C Loamy Soil
D None of these

Answer: Clayey Soil
45 Which of the following soil type is loosely packed with large air spaces?
A Sandy Soil
B Clayey Soil
C Loamy Soil
D None of these

Answer: Sandy Soil
46 Find the odd one out.
A Nasal Cavity
B Nostrils
C Pharynx
D Trachea

Answer: Pharynx
47 Tiny air sacs of lungs are called ______.
A alveoli
B trachea
C bronchi
D larynx

Answer: alveoli
48 Which of the following animal can breathe through skin as well through lungs?
A frog
B cockroach
C fish
D mammal

Answer: frog
49 Which of the following is a scalar quantity?
A Distance
B Displacement
C Velocity
D Force

Answer: Distance
50 Which of the following relations is correct?
A Speed = Distance × Time
B Speed = Distance ÷ Time
C Speed = Time ÷ Distance
D Speed = 1/(Distance × Time)

Answer: Speed = Distance ÷ Time
51 The metallic ball in a pendulum is called as _______
A Bob
B Rod
C Gong
D Fork

Answer: Bob
52 The plant which traps and feeds on insects is:
A cuscuta
B china rose
C pitcher plant
D rose

Answer: pitcher plant
53 Amarbel (Cuscuta) is an example of:
A autotroph
B parasite
C saprotroph
D host

Answer: parasite
54 Iodine used to detect presence of starch. It gives starch
A red colour
B green colour
C blue-black colour
D colourless appearance

Answer: blue-black colour
55 Which part of the plant gets carbon dioxide from the air for photosynthesis?
A root hair
B stomata
C leaf veins
D sepals

Answer: stomata
56 Rhizobium is an example of
A Symbiosis
B Parasites
C Insectivorous
D None of these

Answer: Symbiosis
57 The tiny pores present in the leaves of the plants for exchange of gases are called _____
A Stomata
B Tracheae
C Chloroplast
D Spiracles

Answer: Stomata
58 Green plants are:
A herbivores
B autotrophs
C hetrotrophs
D omnivores

Answer: autotrophs
59 Which of the following do not have teeth (a) (b) (c) snakes (d) elephants
A rats
B Donkey
C birds
D Goat

Answer: birds
60 The walls of large intestine absorb
A water
B proteins
C cellulose
D roughage

Answer: water
61 Bile juice is stored in
A liver
B pancreas
C gall bladder
D stomach

Answer: gall bladder
62 The pointed teeth in the buccal cavity are called:
A incisors
B canines
C premolars
D molars

Answer: canines
63 Which of the following is NOT an element of weather?
A Humidity
B Temperature
C Soil
D Rain

Answer: Soil
64 The eye of a cyclone is
A cloudy and highly stormy.
B full of strong winds.
C calm and cloudless.
D site with high atmospheric pressure.

Answer: calm and cloudless.
65 Equator is a region of _______ pressure while poles are regions of ______ pressure.
A high, low
B low, high
C low, low
D high, high

Answer: high, low
66 Which one of the following is NOT recommended during Lightening or thunderstorm?
A Take Shelter in a bus or car.
B In a forest, seek shelter in a low area under a thick growth of small trees.
C Take shelter under isolated tree.
D Get away from tractors and other metal farm equipment.

Answer: Take shelter under isolated tree.
67 With increase in temperature, atmospheric pressure ___________.
A increases
B decreases
C remains constant
D can decrease or increase

Answer: decreases
68 Which one of the following statement is INCORRECT?
A When air gets heated, it expands.
B when air gets cooled, it contracts.
C The warm air is heavier than cold air.
D Air moves from high pressure region to low pressure region.

Answer: The warm air is heavier than cold air.
69 What is the name given to the wind blowing from sea to land?
A Thunderstorm
B Land breeze
C Sea breeze
D cyclone

Answer: Sea breeze
70 When we breathe out, exhaled air turns lime water into _______ due to presence of ________.
A orange, oxygen
B milky, oxygen
C milky, carbon dioxide
D milky, carbon monoxide

Answer: milky, carbon dioxide
71 Which of the following statements is NOT true?
A Workers in wool industry generally suffer from Sorter’s disease.
B Bakhrwal is an Indian breed of sheep.
C Rayon is a natural fibre.
D Shearing is usually done in summer season.

Answer: Rayon is a natural fibre.
72 Sericulture is ________________.
A rearing of silk worms
B rearing of sheep
C cotton plantation
D rearing of honey bees

Answer: rearing of silk worms
73 Removal of wool from a sheep is known as __________.
A Rearing
B Sorting
C Shearing
D Scouring

Answer: Shearing
74 Which of the following process is NOT part of wool extraction?
A Shearing
B Scouring
C Sorting
D Reeling

Answer: Reeling
75 Animal Fibres are made up of
A cellulose
B protein
C nylon
D rayon

Answer: protein
76 Vegetable fibres are made up of
A cellulose
B nylon
C protein
D rayon

Answer: cellulose
77 Which of the following is NOT a Vegetable fibre?
A flax
B silk
C hemp
D jute

Answer: silk
78 Device used for measuring temperatures is called a
A Barometer
B Odometer
C Thermometer
D Speedometer

Answer: Thermometer
79 A polished silvery surface is
A good absorber of heat
B good reflector of heat
C poor reflector of heat
D None of these

Answer: good reflector of heat
80 Sea breeze is caused due to
A conduction
B convection
C radiation
D all of these

Answer: convection
81 A wooden spoon is dipped in a cup of ice cream. Its other end
A becomes cold by the process of conduction.
B becomes cold by the process of convection.
C becomes cold by the process of radiation.
D does not become cold.

Answer: does not become cold.
82 Which of the following instrument measures time with the most accuracy?
A mechanical clock with gears
B quartz clock
C sun dial
D sand clock

Answer: quartz clock
83 Compact fluorescent lamps (CFLs) are considered better than ordinary electric bulbs because?
A CFLs reduce wastage
B CFLs can be fixed in the ordinary bulb holders.
C both (a) and (b)
D none of the above

Answer: both (a) and (b)
84 Which of the following is the best option while considering the safety of household electric appliances?
A We should use wire strip as fuses.
B We should use non-ISI marked MCBs
C We should use ISI marked MCBs
D We should use conductors with high melting point in fuses.

Answer: We should use ISI marked MCBs
85 The strength of the magnetic field due to a solenoid can be increased by
A decreasing the current strength in the solenoid
B increasing the number of turns in the solenoid
C by winding solenoid around a plastic rod
D all of the above

Answer: increasing the number of turns in the solenoid
86 The magnetic effect of the current was discovered by ________?
A Oersted
B Ohm
C Newton
D Joule

Answer: Oersted
87 Which of the following does not use magnetic effect of electric current?
A electric fan
B electric bulb
C electric motor
D refrigerator

Answer: electric bulb
88 Which of the following acts as safety device in electric appliances?
A fuse
B connecting wires
C resistors
D battery

Answer: fuse
89 Which of the following is an essential element in an electric circuit?
A switch
B connecting wires
C voltmeter
D ammeter

Answer: connecting wires
90 When an electric current passes through a solenoid, it acts as a/an
A insulator
B electric bell
C resistor
D bar magnet

Answer: bar magnet
91 The device used to make or break an electric circuit is:
A Switch
B Ammeter
C Resistor
D Battery

Answer: Switch
92 Primary colours (as per modern colorimetry) consists of
A Cyan, Magenta, Yellow
B Red, Green, Blue
C Black, Yellow, White
D Red, Yellow, Blue

Answer: Red, Green, Blue
93 When matter gets warmer, the atoms and molecules in that matter __________________
A stand still
B move faster
C move slower
D can’t say

Answer: move faster
94 Chemical name of Oil of Vitriol is __________
A Nitric acid
B Acetic acid
C Sulphuric acid
D Sodium Hydroxide

Answer: Sulphuric acid
95 Sodium hydroxide is found in
A Lemon
B Soap
C Oil of Vitriol
D Table Salt

Answer: Soap
96 Lactic acid is found in
A Curd
B Apple
C Soap
D Lime

Answer: Curd
97 Acetic acid is found in
A Curd
B Spinach
C Vinegar
D Citrus fruits

Answer: Curd
98 Which of the following colours is given by phenolphthalein in a basic salt solution.
A yellow
B pink
C orange red
D colourless

Answer: pink
99 The most commonly used natural indicator’ Litmus’ is extracted from
A Lichens
B Turmeric
C Beet Root
D China rose

Answer: Lichens
100 Which of the following is a strong acid?
A acetic acid
B nitric acid
C lactic acid
D citric acid

Answer: nitric acid