General Science - Chemistry MCQ's




All Questions are from Year - 2018 or older

Question 331 :
Which one of the following is used to restore the colour of old oil paintings?

  1. Ozone
  2. Hydrogen peroxide
  3. Barium peroxide
  4. Sodium peroxide
  

Question 332 :
Vulcanization of rubber is carried out by adding

  1. Sulphur
  2. Carbon
  3. Ozone
  4. Phosphorus
  

Question 333 :
Setting of plaster of Paris involves

  1. dehydration process
  2. hydration to form other hydrates
  3. oxidation process
  4. reduction process
  

Question 334 :
Cooking gas is a mixture of

  1. methane and ethylene
  2. carbon dioxide and oxygen
  3. butane and propane
  4. carbon monoxide and carbon dioxide
  

Question 335 :
Firefighting clothes' are made from

  1. Mica.
  2. Asbestos
  3. Talc
  4. Steatite
  

Question 336 :
Which of the following is the major constituent of LPG?

  1. Methane
  2. Ethane
  3. Propane
  4. Butane
  

Question 337 :
The material used in solar cells contains

  1. Tin
  2. Silicon
  3. Caesium
  4. Thallium
  

Question 338 :
The function of skimming tank in sewage treatment isto remove

  1. oil and fatty substances
  2. suspended solids
  3. gritty substances
  4. inorganic substances
  

Question 339 :
Which metal is extracted from seawater?

  1. Potassium
  2. Magnesium
  3. Aluminium
  4. Beryllium
  

Question 340 :
An example of major air pollutant is

  1. Oxygen
  2. Carbon monoxide
  3. Helium
  4. Carbon dioxide
  

Question 341 :
Nowadays yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ?

  1. Sodium
  2. Neon
  3. Hydrogen
  4. Nitrogen
  

Question 342 :
Which type of glass is used for making glass reinforced plastic?

  1. Pyrex glass
  2. Flint glass
  3. Quartz glass
  4. Fibre glass
  

Question 343 :
German silver an alloy does not contain the metal

  1. Nickel
  2. Zinc
  3. Copper
  4. Silver
  

Question 344 :
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas)?

  1. Methane
  2. Ethane
  3. Propane
  4. Butane
  

Question 345 :
92 Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ?

  1. Nitrous oxide
  2. Carbon dioxide
  3. Chlorofluorocarbon
  4. Sulphur dioxide
  

Question 346 :
Bleaching powder is used in drinking water as a an

  1. disinfectant
  2. antibiotic
  3. antiseptic
  4. coagulant
  

Question 347 :
Among the fuels given below the one with highest calorific value is

  1. Coke
  2. Coal
  3. Wood
  4. Natural gas
  

Question 348 :
Oxygen which is vital for life is a product of photosynthesis and conies from

  1. carbonates from soil
  2. carbon dioxide
  3. water
  4. oxides of mineral elements
  

Question 349 :
The chief source of naphthalene is

  1. Coaltar
  2. Diesel
  3. Charcoal
  4. Camphor
  

Question 350 :
Which of the following metals causes ItaiItal disease ?

  1. Cadmium
  2. Chromium
  3. Cobalt
  4. Copper
  

Question 351 :
The temperature of oxyacetylene flame is around

  1. 2800°C
  2. 3200°C
  3. 4000°C
  4. 1500°C
  

Question 352 :
Which of the following is not a precious semiprecious stone?

  1. Sapphire
  2. Ruby
  3. Pearl
  4. Emerald
  

Question 353 :
435: Conduction band electrons have more mobility than holes because they

  1. are lighter
  2. experience collision less frequently
  3. have negative charge
  4. needless energy to move them
  

Question 354 :
The enzyme that converts glucose to ethyl alcohol is :

  1. Invertase
  2. Maltase
  3. Zymase
  4. Diastase
  

Question 355 :
Humburger effect is otherwise known as

  1. Sodium pump
  2. Anaerobic metabolism
  3. Choloride shift
  4. Respiratory product
  

Question 356 :
The compound to which H2 does not add is

  1. Biphenyl ethylene
  2. Tetraphenyl ethylene
  3. Tetraanaphthylethylene
  4. Tetra phenanthrylethylene
  

Question 357 :
Dry ice is

  1. solid ammonia
  2. solid sulphur dioxide
  3. dry carbon dioxide gas
  4. solid carbon dioxide
  

Question 358 :
Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are

  1. Boron and Cadmium
  2. Boron and Plutonium
  3. Cadmium and Uranium
  4. Uranium and Boron
  

Question 359 :
Alcoholic ( OH) group can be identified by

  1. Toliens Reagent Test
  2. Esterification Test
  3. FeCl3 Test
  4. Ozonolysis Reaction
  

Question 360 :
Which one of the following metals does not react with water to produce Hydrogen ?

  1. Potassium
  2. Cadmium
  3. Sodium
  4. Lithium
  
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