General Science: Questions and Answers
(Chapter: 06)
156. _______ is referred as wonder metal.
Ans: Titanium
157. Cathode rays are discovered by _______
Ans: Julius Plucker
158. Anode rays are discovered by ________
Ans: Gold Stein
159. The atomic number is first calculated by _______
Ans: Moseley
160. Neutron was discovered by ______
Ans: James Chadwick
161. The lightest metal is ________
Ans: Lithium
162. Electrum is an alloy of____________
Ans:Gold and Silver
163.In a dry cell _______&_________ act as electrodes
Ans: zinc, carbon
164.___________is the purest form of crystalline rock
Ans; Diamond
165.Rutile is the ore of ___________
Ans: Titanium
166. Galena is the ore of _____________
Ans:Lead
167.The most common halide by weight in earth crust is _______________
Ans : Flouride
168. Heaviest metal occurring in nature is______________.
Ans: Uranium
169._____________is the purest type of iron that contains least amount of carbon.
Ans: Wrought Iron
170.When iron rests, its weight _______________
Ans: increases
171.The First Metal Used by man is_________________
Ans: Copper.
172.The glass used to make thermometers:
(a) Safety glass (b) Pyrex glass
(c) Flint glass (d) Water glass
Answer: (b)
173. Impure camphor is purified by:
(a) Sublimation (b) Fractional crystallization
(c) Fractional distillation (d) Steam distillation
Answer: (a)
174. Diesel oil is preferred for heavy motor vehicles because:
(a) It is cheap
(b) It causes less damage to the engine
(c) of its higher efficiency and fuel economy
(d) of its higher production from crude
Answer: (c)
175. The compound of Copper which is a constituent of Bordeaux Mixture? /
(a) Copper Sulphate (b) Copper Nitrate
(c) Copper Phosphate (d) Copper Oxide
Answer: (a)
176. The red colour of Mars is due to:
(a) Iodine (b) Ferric oxide
(c) Potassium permanganate (d) Methyl red
Answer: (b)
177. The bubbles in Champagne are:
(a) Carbon dioxide (b) Hydrogen
(c) Oxygen (d) Nitrogen
Answer: (a)
178. The metal that shows acidic and basic character:
(a) Iron (b) Aluminium (c) Gold (d) Silver
Answer: (b)
179. The chemical property of a metal is determined by:
(a) Electrons (b) Protons
(c) Neutrons (d) AIl of these
Answer: (a)
180. Which is added to petrol in cold countries to avoid freezing?
(a) Ethylene Glycol (b) Tetra Ethyl Lead
(c) Ethyl Mercaptan (d) Benzene
Answer: (a)
181. Natural rubber is a poly¬mer of:
(a) Ethylene (b) Vinyl Chloride
(c) Isoprene (d) Styrene
Answer: (c)
182. An element essential for the functioning of the Thyroid gland:
(a) Vanadium (b) Chlorine
(c) Iodine (d) Magnesium
Answer: (c)
183. The setting of plaster is involved which among the following process?
(a) Hydrolysis (b) Hydration
(c) Reduction (d) None of these
Answer: (b)
184. Which of the following is a' common constituent of Transistor?
(a) Beryllium (b) Iron (c) Copper (d) Germanium
Answer: (d)
185. The whitest substance:
(a) Topaz (b) Diamond (c) Marble (d) Titanium dioxide
Answer: (d)
186. Which element has the second-highest capacity for oxidation?
(a) Iron (b) Nitrogen (c) Mercury (d) Oxygen
Answer: (d)
187. The substance used for making artificial heart valve:
(a)PVC (b) Nylon (c)Terrilyn (d) Teflon
Answer: (d)
188. The hydrocarbon used for dry cleaning:
(a) Benzene (b) Toluene (c) Methane (d) Ethane
Answer: (a)
189.The nitrogen compound -used as both fertilizer and explosive:
(a) Ammonium Chloride (b) Ammonium nitrate
(c) Urea (d) Ammonium Carbonate
Answer: (b)
190. Lead Chromate imparts ------ colour to rubber products:
(a) Yellow (b) White (c) Green (d) Red
Answer: (a)
(Chapter: 06)
156. _______ is referred as wonder metal.
Ans: Titanium
157. Cathode rays are discovered by _______
Ans: Julius Plucker
158. Anode rays are discovered by ________
Ans: Gold Stein
159. The atomic number is first calculated by _______
Ans: Moseley
160. Neutron was discovered by ______
Ans: James Chadwick
161. The lightest metal is ________
Ans: Lithium
162. Electrum is an alloy of____________
Ans:Gold and Silver
163.In a dry cell _______&_________ act as electrodes
Ans: zinc, carbon
164.___________is the purest form of crystalline rock
Ans; Diamond
165.Rutile is the ore of ___________
Ans: Titanium
166. Galena is the ore of _____________
Ans:Lead
167.The most common halide by weight in earth crust is _______________
Ans : Flouride
168. Heaviest metal occurring in nature is______________.
Ans: Uranium
169._____________is the purest type of iron that contains least amount of carbon.
Ans: Wrought Iron
170.When iron rests, its weight _______________
Ans: increases
171.The First Metal Used by man is_________________
Ans: Copper.
172.The glass used to make thermometers:
(a) Safety glass (b) Pyrex glass
(c) Flint glass (d) Water glass
Answer: (b)
173. Impure camphor is purified by:
(a) Sublimation (b) Fractional crystallization
(c) Fractional distillation (d) Steam distillation
Answer: (a)
174. Diesel oil is preferred for heavy motor vehicles because:
(a) It is cheap
(b) It causes less damage to the engine
(c) of its higher efficiency and fuel economy
(d) of its higher production from crude
Answer: (c)
175. The compound of Copper which is a constituent of Bordeaux Mixture? /
(a) Copper Sulphate (b) Copper Nitrate
(c) Copper Phosphate (d) Copper Oxide
Answer: (a)
176. The red colour of Mars is due to:
(a) Iodine (b) Ferric oxide
(c) Potassium permanganate (d) Methyl red
Answer: (b)
177. The bubbles in Champagne are:
(a) Carbon dioxide (b) Hydrogen
(c) Oxygen (d) Nitrogen
Answer: (a)
178. The metal that shows acidic and basic character:
(a) Iron (b) Aluminium (c) Gold (d) Silver
Answer: (b)
179. The chemical property of a metal is determined by:
(a) Electrons (b) Protons
(c) Neutrons (d) AIl of these
Answer: (a)
180. Which is added to petrol in cold countries to avoid freezing?
(a) Ethylene Glycol (b) Tetra Ethyl Lead
(c) Ethyl Mercaptan (d) Benzene
Answer: (a)
181. Natural rubber is a poly¬mer of:
(a) Ethylene (b) Vinyl Chloride
(c) Isoprene (d) Styrene
Answer: (c)
182. An element essential for the functioning of the Thyroid gland:
(a) Vanadium (b) Chlorine
(c) Iodine (d) Magnesium
Answer: (c)
183. The setting of plaster is involved which among the following process?
(a) Hydrolysis (b) Hydration
(c) Reduction (d) None of these
Answer: (b)
184. Which of the following is a' common constituent of Transistor?
(a) Beryllium (b) Iron (c) Copper (d) Germanium
Answer: (d)
185. The whitest substance:
(a) Topaz (b) Diamond (c) Marble (d) Titanium dioxide
Answer: (d)
186. Which element has the second-highest capacity for oxidation?
(a) Iron (b) Nitrogen (c) Mercury (d) Oxygen
Answer: (d)
187. The substance used for making artificial heart valve:
(a)PVC (b) Nylon (c)Terrilyn (d) Teflon
Answer: (d)
188. The hydrocarbon used for dry cleaning:
(a) Benzene (b) Toluene (c) Methane (d) Ethane
Answer: (a)
189.The nitrogen compound -used as both fertilizer and explosive:
(a) Ammonium Chloride (b) Ammonium nitrate
(c) Urea (d) Ammonium Carbonate
Answer: (b)
190. Lead Chromate imparts ------ colour to rubber products:
(a) Yellow (b) White (c) Green (d) Red
Answer: (a)
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