07/03/2021
General Science
Class FOUR (Complete)
Chapter 1. Our Body
1. Which is central control system of the
body?
Brain
2. A headache is not a pain of?
Brain
3. Most headaches happen in the?
Nerves
4. Which part of body stores the food?
Stomach
5. Stomach passes liquid mixture to which
part of body?
Small Intestine
6. Which part absorbs all nutrients of the
food?
Small Intestine
7. How many primary teeth are there?
20
8. How many permanent teeth do adults
have?
32
9. Which part of body helps elephants to
control their temperature?
Ears
10. Which elephants have larger ears than
Asian elephants?
African
11. The part of ear which is visible called?
External Ear
12. Which are the breathing centers of
body?
Lungs
13. Where lungs of humans are located?
Chest Cavity
14. Lungs are protected by?
Ribcage
15. Where does the inhaled air enter?
Lungs
16. Wind pipe where clean air enters is
known as?
Trachea
17. In how many small tubes Trachea is
divided?
Two (Bronchial Tube)
18. Each Bronchial tube is joined with?
Lungs
19. Asthma is main disorder of?
Lungs
20. Which is the pumping station of the
body?
Heart
21. The average human heart beats about
how many times in a minute?
72
22. How many bones are there in human
body?
206
23. Places where two bones meet are
called?
Joints
24. Outer layer of the body is called?
Skin
25. Largest outer part of body is?
Skin
26. What is thickness of human skin?
2 millimeters
27. The part of body that gives you shape
is?
Skelton
Chapter 2. Characteristics and
Needs of Living Things
28. The characteristics that an organism
inherits from its parents are called?
Traits
29. Life cycle of butterfly is?
Eggs-larva-pupa-adult
30. Larva of butterfly is also called?
Caterpillar
31. Pupa of butterfly is also called?
Chrysalis
32. Life cycle of frog is?
Spawn-Tadpole-froglet
33. Frog eggs are also called?
Spawn
33. Spawn of frog develops into?
Tadpole
34. Tadpole develops into?
Froglet
Chapter. 3 Food and Health
35. Which are the major source of quick
energy for body?
Carbohydrates
36. Which are main source of body
growth?
Minerals
37. Which main sources protect body
from diseases?
Vitamins
38. Vitamins are mainly found in?
Fruits and vegetables
38. Minerals are mainly found in?
Sea food
39. What do Milk, meat, eggs and pulses
provide?
Protein
40. Fats are found in?
Oil, Butter and margarine
41. Vitamin A prevents disease called?
Night Blindness
42. Vitamin B complex prevent disease
called?
Beriberi
43. Which vitamin strengths immune
system?
Vitamin C
44. Vitamin C prevents a disease called?
Scurvy
45. Which Vitamin strengths bones and
teeth?
Vitamin D
46. Vitamin D prevents disease called?
Rickets
47. Which are the building blocks of body?
Proteins
48. Flash of body is made up of?
Protein
49. What makes the red blood cells?
Iron
50. Which disease is caused by deficiency
of iron?
Anaemia
51. Deficiency of calcium causes?
Rickets
52. Deficiency of copper causes?
Kidney problems
53. Deficiency of magnesium causes?
Osteoporosis
54. Deficiency of protein causes?
Marasmus
55. Weight loss of children is due to?
Marasmus
56. Marasmus develop due to lack of?
Nutrients
57. Kwashiorkor disease is caused by
deficiency of?
Iron
58. Keeping oneself clean is called?
Hygiene
Chapter 4. Living Things and Their
Environment
59. The natural world that surrounds a
living and non-living things is called?
Environment
60. What do Herbivores eat?
Plants
61. What do Carnivores eat?
Animals
62. What do Omnivores eat?
Plants and Animals
63. Human beings are?
Omnivores
64. Organisms that eat the producers are
called?
Primary Consumers
65. Which are the only primary
consumers?
Herbivores
66. Organisms that eat primary consumers
are called?
Secondary Consumers
67. Which are the only secondary
consumers?
Carnivores
68. Which are the consumers that eat
both herbivores and carnivores?
Omnivores
69. Animals that eat primary secondary
consumers are called?
Tertiary Consumer
70. Organisms that eat all the dead and
waste products of producers and
consumers are called?
Decomposers
71. Which is the correct order of levels in
a food chain?
Producer-consumer-decomposer
72. Which best describes the frog?
Consumer
73. Which animal is considered as
decomposer?
Mold
74. What is key role of decomposers?
Breaking down dead animals
Chapter 5. Matter and its State
75. Anything that occupies space and has
mass is called?
Matter
76. How many states of matters are
there?
Three (Solid, liquid and gas)
77. The amount of space a material object
occupies is called its?
Volume
78. State of matter that has fixed shape
and fixed volume is called?
Solid
79. Volumes of solids do not change with?
Pressure
80. State of matter that hast fixed volume
but not fixed shape is called?
Liquid
81. State of matter that has no fixed
shape and fixed volume is called?
Gas
82. Solids, liquids and gases mix together
to form?
Mixture
83. Solution is a kind of?
Mixture
84. The process of separation of solute
and solvent from the mixture is called?
Filtration
85. Solid can be converted into liquid by?
Heating
86. Liquid can be converted into gas by?
Heating
87. Gas can be converted into liquid by?
Cooling
88. Liquid can be converted into solid by?
Cooling
89. Water is a?
Compound
Chapter 6. Heat and its
Measurement
90. Heat is a form of?
Energy
91. In what heat energy is measured?
Joules
92. What is unit of energy?
Joule
93. How many scales are there to
measure temperature?
Two
94. Degrees of hotness are measured by?
Thermometer
95. The lowest temperature in laboratory
thermometer is?
10 Centigrade
96. The highest temperature in laboratory
thermometer is?
110 Centigrade
97. Which liquid is used in the clinical
thermometer?
Mercury
98. Which liquid is used in the clinical
thermometer?
Mercury
99. The freezing point of water at
Fahrenheit scale is?
32 F
100. The freezing point of water at
Fahrenheit scale is?
212 F
101. How many divisions does Fahrenheit
have?
180
102. Fahrenheit scale on thermometer is
marked from 95 F to?
108 F
Chapter 7. Force and Machine
103. A pull or push is called?
Force
104. Speed of any object can be changed
by?
Force
105. Speed can be measured in?
Kilometers per hour
Chapter 8. Sound
106. Sound is produced by?
Vibrating objects
107. Sound cannot travel through a?
Vacuum
108. Which animals do not have ears?
Snakes
109. Snakes feel vibrations by their?
Tongue
110. Sound is described in terms of?
Intensity in decibels
111. Sounds travel faster through?
Solids
112. Unit of Decibel is denoted by?
dB
113. According to World Health
Organization, dB must be of?
75 dB
114. More than 115 dB is considered as?
Noise
Chapter 9. Electricity and
Magnetism
115. The flow of electricity is called?
Current
116. Materials through which electricity
can pass are called?
Conductors
117. Materials through which electricity
cannot pass are called?
Insulators
118. The path through which current pass
is called?
Circuit
119. Matter is made up of?
Atoms
120. Which are fundamental particles of
atom?
Electron, Proton and Neutron
121. Which particles of atom are
negatively charged?
Electrons
122. Which particles of atom are
positively charged?
Protons
123. Which particles of atom are not
charged and called neutral?
Neutrons
124. How many kinds of circuit are there?
Two (open and close)
125. How many poles does magnet have?
Two (south and north)
126. How many types of magnets are
there?
Two (natural and artificial)
127. The magnets which are made with
help of electricity are called?
Electromagnets
128. Natural magnets are also called?
Permanent magnets
129. Artificial magnets are also called?
Temporary magnets
130. The end of magnetic is called?
Magnetic pole
131. The property of magnet to attract
things is called?
Magnetism
Chapter 10. Movements of the
Earth
132. Earth rotates from the west to?
East
133. The rotation of earth on its axis is
called?
Axial rotation
134. Rotation of earth causes?
Day and night
135. Earth is traveling around the sun
called?
Revolution
136. Revolution of earth causes?
Summer and winter
137. The earth is tilted at an angle of?
23.5 degree
138. The earth’s axis an imaginary?
Line
139. 21 June is longest day in?
Northern hemisphere
140. 22 December is shortest day in?
Northern hemisphere
