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You Are On Question Answer Bank SET 1042
52101. Who discovered leprosy bacillus:
Answer: Hansen
52102. Penicillin is obtained from:
Answer: Fungus
52103. Operator flood refers to:
Answer: Milk production
52104. Pure water is obtained from sea water by the process of:
Answer: Distillation
52105. The purest form of iron is:
Answer: Wrought iron
52106. The type of water which does not lather easily is called:
Answer: Hard water
52107. An element that does not occur in nature but can be produced artificially is:
Answer: Plutonium
52108. Actinides are the elements with atomic number from:
Answer: 89 to103
52109. The two elements that are frequently used for making transistors are:
Answer: Silicon & Germanium
52110. From which mineral is radium obtained:
Answer: Pitchblende
52111. Bleaching powder is made from:
Answer: Lime and chlorine
52112. Nuclear fission is caused by the impact of:
Answer: Neutron
52113. Titanium is purified by:
Answer: Van Arkel method
52114. Unit of loudness:
Answer: Decibel
52115. The kinetic energy of a body depends on its:
Answer: Velocity
52116. The period of revolution of a geostationary satellite is:
Answer: 24 hours
52117. The color of a star depends on its:
Answer: Temperature
52118. Who put forward Drift Theory?
Answer: Alfred Wegner
52119. A rainbow is formed by the …………. of the light by water droplets.
Answer: Dispersion and total internal reflection.
52120. Who discovered Hydrogen?
Answer: Hendry Cavendish
52121. Who gave Hydrogen that name?
Answer: Lavosier
52122. Which gas was discovered by Daniel Rutherford?
Answer: Nitrogen
52123. Fluorine was extracted for the first time by:
Answer: Henri Moissan
52124. Which is the oldest anaesthetic in the world:
Answer: Aspirin
52125. The chemical that imparts yellow color to glass:
Answer: Cadmium sulphide
52126. Lead Chromate imparts …………….. color to rubber products:
Answer: Yellow
52127. The chemical used in photographic films:
Answer: Silver Bromide
52128. The poisonous gas formed when plastic is burned:
Answer: Dioxine
52129. Which metal is used to make the covering of nuclear reactors?
Answer: Lead
52130. Which is added to petrol to reduce knocking:
Answer: Tetra Ethyl Lead
52131. The first organic compound prepared in laboratory:
Answer: Urea
52132. Which is known as ‘Artificial Silk’?
Answer: Rayon
52133. Which one of the following is an isotope of Hydrogen?
Answer: All of these
52134. The formula of Hard Water:
Answer: D2O
52135. Chemical used by USA in Vietnam War:
Answer: Agent orange
52136. Heaviest gas:
Answer: Uranium Hexaflouride
52137. The chemical that turns silver ornaments into black:
Answer: Hydrogen sulphide
52138. The Nitrogen compound used as both fertilizer and explosive:
Answer: Ammonium Nitrate
52139. The bubbles in Champagne are:
Answer: Carbon dioxide
52140. When you chop onions, your eyes can burn because a chemical reaction produces:
Answer: Sulphuric acid
52141. Humans excrete most nitrogen based wastes in urine using which molecule?
Answer: Urea
52142. What pigment is most directly responsible for the brown color of faces?
Answer: Bilirubin
52143. The chemical known as thimerosol has been used to preserve saline solutions and vaccines. Thimerosol contains which metal?
Answer: Mercury
52144. The individual polymer unit of cotton is:
Answer: Cellulose
52145. The fibre that is obtained by chemical treatment of wood pulp is:
Answer: Rayon or artificial silk
52146. Which synthetic fibre used coal, water and air as its raw materials?
Answer: Nylon
52147. Parachutes and ropes for rock climbing are made out of the artificial fibre called ..........
Answer: Nylon
52148. What is polycot?
Answer: Mixture of polyester and cotton
52149. Which polymer form is used widely for making bottles, utensils and films?
Answer: PET (polyethylene Terephthalate)
52150. Plastics which get deformed easily on heating and can be bent are known as ..........
Answer: Thermoplastics
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