BRILLIANCE COLLEGE
CHEMISTRY
1. Aspirin was invented in 1899 by :
A.Felix Hoffmann (Germany)
B. Joseph Lister (England)
C.C.F. Brush (U.S.A)
D. Nicholas Cugnot (France)
Ans. A Felix Hoffmann (Germany)
 ‘Wonder drug’ - Aspirin
 Chemical name of Aspirin - Acetyl Salicylic acid
 DDT (Dicholoro Diphenyl Trichloro Ethane) was discovered by - Paul Herman Muller (Germany 1939)
 Ozone was discovered by Christian Friedrich Schonbein (1840)
2. Indian Institute of Petroleum is situated at
A. Bhavnagar
B. Dhanbad
C. Nagpur
D. Dehradun
Ans. D Dehradun (Uttarakhand)
 Flowing gold - Petroleum
 Raman Science Centre Planetarium - Nagpur
 Central mining research centre - Dhanbad
 The scale which is used to determine the knocking quality a fuel - Octane number.
 The sharp metallic sound given from the cylinders of spark ignition engines resulting a huge wastage of
energy - Knocking
 Knocking increases wear and tear of the engine.
 The compounds which are added to the gasoline to eliminate knocking - antiknocking compounds
 Antiknocking compound - Tetraethyl lead
 Quality of diesel oil is determined by using Cetane number.
3. Name the gas used for artificial ripening of fruits.
A. Ethylene B. Methane
C. Butane
D. Propane
Ans. A Ethylene
 The main constituent present in biogas and natural gas - Methane (CH4).
 Marsh gas - Methane
 Liquified petroleum gas (LPG) contains Butane (40%) and propane (60%)
 “Rock oil”, “Black gold”, “Mineral Oil” - Petroleum
 Before purification, petroleum is known as crude oil.
 Petroleum is a hydrocarbon.
 Petroleum contains Carbon and Hydrogen.
 The process of separating different components of the crude oil - Fractional distillation.
 The unit used to express the quantity of Petroleum and its products - Barrel
 1 barrel - 159 litre
4. The chemical compound which is known as “Philosopher’s wool”:A. Zinc oxide B. Zinc phosphide C. Iron pyrites D. Naphthalene
Ans. A Zinc oxide (ZnO)
 Rat poison - Zinc phosphide.
 Moth balls are chemically known as naphthalene.
 Naphthalene is a hydrocarbon.
 ‘Fools gold’ - Iron pyrites
 ‘White Tar’ - Naphthalene
 ‘White Coal’ - Uranium
 Compound known as ‘Hypo’ - Sodium thiosulphate
5. Unit of radioactivity is
A. Volt
B. Curie
C. Herz
D. Watt
Ans. B Curie
 Artificial radioactivity was discovered by Irene Curie & Fredriech Juliot
 Natural radioactivity - Henry Becquerel (1896)
 Radioactive radiations are founded by - Ernest Rutherford
 Other units of radioactivity - Rutherford, Becquerel.
 Radio carbon dating was developed by Williard.F.Libby
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 Simplest radioactive atom : Tritium 31 H
 Radioactive iodine (I-131) :- treatment of Hyper thyroidism
 Cobalt - 60 :- treatment of Cancer
 Gold - 198 - treatment of leukemia
 Sodium - 24 - Angiogram test
 Reaction taking place in nuclear reactor:- Controlled fission
 Coolants used in nuclear reactor - Liquid sodium
 Control rods (moderators) :- Graphite and Cadmium rods.
 Strongest radioactive element - Radium
 Liquid radioactive metal - Francium
 Gascous radioactive element - Radon
6. “Acid rain” or “Transboundary Pollution” is caused by
A. nitrogen oxide & Sulphur dioxide
B. Carbon monoxide
C. Carbondioxide
D. Hydrocarbon
Ans. A Nitrogen oxide and Sulphur dioxide
 Nitrogen oxide and Sulphur dioxide reacts with watervarpour present in the atmosphere to form Nitric
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acid and Sulphuric acid. This causes acid rain.
The gas dissolved in Fizzy drinks (soda water) - Carbondioxide (CO2)
CO2, Methane, nitrous oxide etc are called green house gases.
Carbon monoxide (CO) is a poisonous gas.
The gas produced by partial combustion of fuels - Carbon monoxide.
7. Cobalt ion gives _____________ colour to glass.
A. Green
B. Red
C. Blue
D. Purple
Ans. C Blue
 Ferric salts imparts yellow colour to the glass.
 Ferrous salts imparts green colour to the glass.
 Nickel salt gives Red colour to the glass.
 Manganese dioxide gives - Purple colour to the glass
 Safety glass is used in the manufacture of bullet proof screens, wind shields etc.
 Laboratory apparatus are prepared by borosilicate glass.
 Flint glass is used for making lenses, Prisms.
 Uranium oxide imparts Greenish yellow colour to the glass.
8. Which is not a green house gas?
A. Methane B. Chlorine
C. Nitrous oxide D. Carbondioxide
Ans. B Chlorine
 Atomic number of Chlorine - 17
 Chlorine is a member of halogen family.
 Other members of halogen family are : Fluorine, Chlorine, Bromine, Iodine, Astatine
 Highly reactive element : Fluorine
 Liquid non-metal : Bromine
 Densest non-metal : Iodine
 Densest metal : Osmium
 Rarest element in the earth crust : Astatine
 Astatine is a radioactive element.
 Methane, nitrous oxide, Carbon dioxide - are green houses gases
9. The metal used in storage batteries:
A. Zinc (Zn) B. Lead (Pb)
C. Lithium (Li) D. Tin (Sn)
Ans. B Lead
 Lead has poorest electrical conductivity
 Galena is the ore of lead.
 Most stable element :- Lead
 The metal used in dry cells :- Zinc
 The metal used in mobile phone batteries :- Lithium ion
 Emf of dry cell : 1.5 V
 Reaction taking place in dry cells :- Chemical energy change to electrical energy.
 Mechanical energy changes to electrical energy in dyanamo.
10. Dow’s process is used for the extraction of
A. Iron
B. Calcium
C. Sodium
D. Magnesium
Ans. D Magnesium
 Bosch process - Hydrogen
 Castner Kellner cell - NaOH
 Solvay process - Sodium carbonate & Sodium bicarbonate
 Haber process - manufacture of Ammonia
 Cyanide process is used for the extraction of silver and gold.