everyday science Mcqs
101. When white light is passed through a prism, it splits into __________ colours.
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A. 5

B. 8

C. 6

D. 7
102. The fourth state of matter is?
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A. Salts

B. Vapours

C. Plasma

D. Water

103. The average heartbeat per minute in a normal man is _________?
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A. 100

B. 80

C. 70

D. 50

104. Sound waves are _________ waves.
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A. Transverse

B. Electromagnetic

C. None of these

D. Longitudinal
105. The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?
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A. 8 days

B. 12 days

C. 16 days

D. None of these

E. 4 days

106. Which of the following explains the reason why there is no total eclipse of the sun?
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A. Direction of rotation of earth around sun

B. Area of the sun covered by the moon

C. Size of the earth in relation to that of moon

D. None of these

E. Orbit of moon around earth

107. Deficiency of Vitamin-A results in __________?
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A. rickets

B. Night blindness

C. hair fall

D. scurvy

108. Coulomb is the scientific unit to measure?
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A. None OF These

B. Mass

C. Temperature

D. Velocity

109. In winter an iron pipe feel colder than a wooden window . This is because wood is_______?
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A. Not a solid while iron is a solid

B. Conductor

C. Semi- Conductor

D. Non-Conductor

E. None of these

110. The sunlight can reach a depth of___________meters in the ocean
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A. None

B. 200

C. 80

D. 120

111. The Continent Antarctica lies at the__________?
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A. None of these

B. South pole

C. North pole

D. middle of the earth

E. Equator

112. Bats can also fly in dark because they are capable of taking the help of _________?
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A. Special Retina

B. Ultraviolet Waves

C. Electromagnetic Waves

D. Ultrasonic Waves
113. Myopia is a defect of Human eye. it can be corrected by using a lens called?
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A. Plano convex lens

B. Cylindrical lens

C. None of these

D. Concave lens

E. Convex lens

114. The term Blue Shift is used to indicate?
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A. Turning a star from white to blue

B. In future sun would become blue

C. Black hole was blue at its start

D. None of these

E. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.
115. One of the main function of the earths ozone layer is to ?
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A. All of the above

B. Prevent global warming

C. Filter out ultraviolet rays

D. Absorb pollution

116. Rectified spirit contains alcohol about ?
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A. 95%

B. 85%

C. 80%

D. 70%

117. The most important stimulant in tea leaves is?
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A. Phenylalanine

B. Brucine

C. Caffeine

D. Theine

118. Carrot is good source of Vitamin _______?
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A. Vitamin D

B. Vitamin A

C. Vitamin B

D. Vitamin C

119. How many bones are there in an adult human being?
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A. 206

B. 210

C. 260

D. 300

120. The main function of the kidney is ____________?
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A. To help in digestion of food

B. To remove waste product from the body

C. To control blood pressure

D. To control body temperature

121. The SI unit of electric current is?
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A. Watt

B. Coloumb

C. Ampere

D. Volt

122. In a railway track, two rails are joined end to end with a gap tin between them because?
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A. Accidents due to contraction in winter can be avoided

B. Steel can be saved

C. Air gaps are necessary for bearing the weight of running train

D. Accidents due to expansion in summer can be avoided

E. All of these

123. The main constituent of hemoglobin is___________?
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A. Calcium

B. Chlorine

C. None of these

D. Iron
124. Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ________?
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A. Reflection

B. Conduction

C. Radiation

D. None of these

E. Convection

125. During winter in cold countries, the __________ is mixed to melt the ice on the icy roads.
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A. Water

B. Chlorine

C. Carbon dioxide

D. Salt
126. The Carbon Dioxide in the atmosphere, by volume, is_______?
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A. 0.039%

B. 30%

C. 3.90%

D. 13%

127. The most densest substance on the Earth is __________.
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A. Platinum

B. Steel

C. Copper

D. Osmium
128. ECG is used for the diagnosis of aliments of ?
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A. Heart

B. Kidneys

C. Lungs

D. Brain

129. Diamond is a very expensive ornament. It is composed of a single element ___________?
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A. None of these

B. Carbon

C. Silver

D. Gold

E. Platinum

130. Eugenics is the study of___________________?
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A. Different races of mankind

B. None of these

C. Genetic of plants

D. People of European region

E. Altering human beings by changing their genetic components
131. In night, when photosynthesis is stopped, plants__________?
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A. give off Carbon Dioxide

B. take in Carbon Dioxide

C. None of these

D. give off Oxygen

132. Deficiency of Vitamin-D results in __________?
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A. night blindness

B. hair fall

C. scurvy

D. rickets
133. The fluid part of blood is known as __________?
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A. plasma

B. None of these

C. platelets

D. blood cells

134. A satellite moving round the earth with a uniform speed has____________?
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A. An accelerated motion

B. No acceleration at all

C. Uniform acceleration

D. Uneven acceleration

135. Trachoma is a disease of the___________?
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A. Liver

B. Eyes

C. Lungs

D. Kidneys

136. Dry ice is ___________?
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A. Solid Carbon dioxide

B. Frozen Water

C. None of these

D. Liquid Nitrogen

E. Methane hydrate

137. It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the_______?
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A. Quality

B. None of these

C. Frequency

D. Time period

E. pitch
138. The bodyguard of the Earth is __________ that save the Earth from many Comets and Asteroids.
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A. Mars

B. Uranus

C. Jupiter

D. Saturn

139. CNG stands for?
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A. Compressed Natural Gas

B. Conducted Natural Gas

C. Converted Natural Gas

D. Conduced Natural Gas

140. Which of the following glands secrete tears?
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A. Pituitary

B. Lachrymal

C. Thyroid

D. Pancreas

141. The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?
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A. super sonic

B. Ultrasonic

C. None of these

D. Infrared waves

E. red waves

142. The number of spark plugs needed in a diesel engine is__________?
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A. 4

B. 3

C. 0

D. 2

E. None of these

143. Diamond is an allotropic form of_______?
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A. Carbon

B. Nitrogen

C. Silicon

D. Hydrogen

144. Founder of modern astronomy was _________________?
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A. None of these

B. Michael Faraday

C. William Gilbert

D. Archimedes

E. Nicolas Copernicus
145. Role of biotechnology in the production of food based on ___________?
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A. None of these

B. Fermentation

C. Digestion

D. Decomposition

E. Respiration

146. The theory of Expanding Universe was first propounded by____________?
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A. Newton

B. Gahleo

C. Einstein

D. Hubble
147. Where do most of Asteroids lie?
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A. In asteroid belt between the orbits of Jupiter and Venus

B. None of these

C. In asteroid belt between the orbits of Mars and Venus

D. Everywhere in the sky

E. In asteroid belt between the orbits of Mars and Jupiter
148. The energy value of food is measured in_______?
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A. Calories

B. Joule

C. Proteins

D. Tesla

149. Parsec is a unit of ___________?
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A. Distance

B. Energy

C. Time

D. None of these

E. Power

150. The largest part of the human brain is ___________?
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A. None of these

B. Cerebellum

C. Cerebrum

D. Medulla oblongata