General Science - Chemistry MCQ's




All Questions are from Year - 2018 or older

Question 271 :
The Bhopal tragedy was caused by the gas

  1. phosgene
  2. carbon monoxide
  3. methyl isocyanate
  4. chlorine
  

Question 272 :
The National Chemical Laboratoly (India) is located in

  1. Mumbai
  2. Bangaluru
  3. Hyderabad
  4. Pune
  

Question 273 :
Tetra ethyle lead (TEL) is

  1. a catalyst in burning fossil fuel
  2. an antioxidant
  3. a reductant
  4. an antiknock compound
  

Question 274 :
Which of the following is riot a greenhouse gas ?

  1. Hydrogen
  2. Carbon dioxide
  3. Nitric oxide
  4. Chlorofluorocarbon
  

Question 275 :
Which one of the following is used for dating very old objects of archaeological importance?

  1. Phosphorus
  2. Tritium
  3. Radium
  4. Carbon
  

Question 276 :
The major harmful gas emitted by automobile vehicle which causes air pollution is

  1. Carbon Monoxide
  2. Methane
  3. Carbon dioxide
  4. Ozone gas
  

Question 277 :
Which of these acids is not organic in origin?

  1. Lactic acid
  2. Sulphuric acid
  3. Citric acid
  4. Oxalic acid
  

Question 278 :
Which among the following metals provides atmospheric oxide?

  1. Sodium
  2. Silver
  3. Aluminium
  4. Calcium
  

Question 279 :
In which of the following substances all carbon atoms are quaternary in nature ?

  1. Graphite
  2. Diamond
  3. Teflon
  4. Napthalene
  

Question 280 :
Radioactive disintegration of uranium ultimately results in formation of

  1. radium
  2. thorium
  3. polonium
  4. lead
  

Question 281 :
Which of the following is used for refrigeration?

  1. Sulphur dioxide
  2. Chlorine
  3. Freon
  4. Phosphine
  

Question 282 :
The particle required to continue the chain process ofUranium fission is :

  1. Electron
  2. Proton
  3. Neutron
  4. Positron
  

Question 283 :
Hard steel contains

  1. 2 to 5 per cent carbon
  2. 5 to 5 per cent carbon
  3. 1 to 4 per cent carbon
  4. 01 to 04 per cent carbon
  

Question 284 :
Which one of the following elements is used in the manufacture of fertilizers?

  1. Fluorine
  2. Potassium
  3. Lead
  4. Aluminium
  

Question 285 :
Select the one which is not a mixture:

  1. Air
  2. Gasoline
  3. LPG
  4. Distilled water
  

Question 286 :
What is the name of that system which uses radioactivity to decide the period of materials of pre his tone period ?

  1. Radium dating
  2. Uranium dating
  3. Carbon dating
  4. Deuterium dating
  

Question 287 :
Wood spirit is

  1. Methyl alcohol
  2. Ethyl alcohol
  3. Butyl alcohol
  4. Propyl alcohol
  

Question 288 :
Sour taste of Coca Cola is due to the presence of

  1. acetic acid
  2. phosphoric acid
  3. hydrochloric acid
  4. formic acid
  

Question 289 :
Burning pyrites ore gives out

  1. Carbon dioxide gas
  2. Sulphur dioxide gas
  3. Nitrogen dioxide gas .
  4. Nitric oxide gas:
  

Question 290 :
An example of semiconductor is

  1. Germansilver
  2. Germanium
  3. Phosphorous
  4. Arsenic
  

Question 291 :
Baking soda is

  1. Potassium carbonate
  2. Sodium hydroxide
  3. Sodium carbonate
  4. Sodium bicarbonate
  

Question 292 :
Quartz is a crystalline form of

  1. Alumina
  2. Glass
  3. Silica
  4. Limestone
  

Question 293 :
Sodium bicarbonate is commercially known as

  1. Washing soda
  2. Baking soda
  3. Caustic soda
  4. Soda lime
  

Question 294 :
Milk is a colloidal system in which:

  1. Water is dispersed in fat
  2. Fat is dispersed in water
  3. Fat and water are dispersed in each other
  4. Fat is dissolved
  

Question 295 :
The first metal used by a man was

  1. Copper
  2. Silver
  3. Bronze
  4. Brass
  

Question 296 :
Which of the following in automobile exhaust can cause cancer?

  1. Oxides of nitrogen
  2. Carbon monoxide
  3. Lead
  4. Polyclinic hydrocarbons
  

Question 297 :
The mass number of a nucleus is.

  1. always less than its atomic number
  2. always more than its atomic number
  3. always equal to its atomic number
  4. sometimes more and sometimes equal to its atomic number
  

Question 298 :
Which of the following is the petroleum wax ?

  1. Bees wax
  2. Camaubawax
  3. Paraffin wax
  4. Jojoba wax
  

Question 299 :
Silk fibre chemically is :

  1. Carbohydrate
  2. Fat
  3. Protein
  4. Cellulose
  

Question 300 :
Magnesium is an alloy of

  1. Aluminum and Magnesium
  2. Magnesium and Tin
  3. Aluminum and Zinc
  4. Manganese and Magnesium
  
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