General Science - Chemistry MCQ's

Question 211 :
Photo oxidation process is initiated by

1. light
2. heat
3. oxygen
4. catalyst

Question 212 :
Which of the following elements is non radioactive ?

1. Uranium
2. Thorium
3. Plutonium
4. Zirconium

Question 213 :
Aluminum can be purified by

1. oxidation
2. distillation
3. electrolysis
4. ozonolysis

Question 214 :
A polymeric substance used to make parachute is

1. Rayon
2. Viscose
3. Cotton
4. Terylene

Question 215 :
Taj Mahal is greatly affected due to :

1. Tourists
2. Acid rain
3. Deforestation
4. Sound pollution

Question 216 :
The important ore of aluminium is

1. bauxite
2. cryolite
3. fluorspar
4. haematite

Question 217 :
Who discovered the atom bomb?

1. Madam Curie
2. Pierre Curie
3. Otto Hahn
4. Albert Einstein

Question 218 :
Greenhouse effect is caused by

1. nitrogen
2. carbon dioxide
3. carbon monoxide
4. nitrogen dioxide

Question 219 :
Which one of the following organic compounds has fruity smell?

1. Alcohol
2. Aldehyde
3. Ester
4. Ether

Question 220 :
The resources which can be used continuously year after year ate called

1. Biotic
2. Abiotic
3. Nonrenewable
4. Renewable

Question 221 :
Cement is formed by strongly heating a mixture of

1. limestone and graphite
2. limestone and clay
3. chalk and graphite.
4. clay and graphite

Question 222 :
Which of the following gases is most toxic?

1. Carbon dioxide
2. Carbon monoxide
3. Sulphur dioxide
4. Chlorine

Question 223 :
The chiefsource for the production of nitrogeneousfertilizers is :

1. Ammonia
2. Nitric acid
3. Nitrogen
4. Nitrogen dioxide

Question 224 :
Which of the following metals form an amalgam with other metals ?

1. Lead
2. Tin
3. Zinc
4. Mercury

Question 225 :
Which type of glass is used for making glass reinforced plastic?

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

Question 226 :
Plaster of Paris is made by partial dehydration of

1. Epsom salt
2. gypsum salt
3. blue vitriol
4. green vitriol

Question 227 :
The isotope used for the production of atomic energy is

1. U-235
2. U-238
3. U-234
4. U-236

Question 228 :
The chemical name of Common salt is

1. Sodium chloride
2. Sodium nitrate
3. Ammonium chloride
4. Calcium chloride

Question 229 :
The element which is commonly used in nuclear for producing electricity by nuclear fission is

1. Radium
2. Plutonium
3. Uranium
4. Deuterium

Question 230 :
The substance that is added to make natural rubber strong and more bouncy is

1. Polythene
2. Sponge
3. Sulpher
4. Chlorine

Question 231 :
Bhopal gas tragedy is associated with leakage of

1. carbon dioxide
2. nitrogen dioxide
3. Sulphur dioxide
4. methyl isocynate

Question 232 :
The purest form of water is

1. tap water
2. rainwater
3. groundwater
4. distilled water

Question 233 :
Which one of the following metals pollutes the air of a city having large number of automobiles?

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

Question 234 :
Silver halides are used in photographic plates because they are

1. oxidised in air
2. soluble in hyposolution
3. reduced by light
4. totally colourless

Question 235 :
The isotope of Uranium used in atomic reactors is

1. U235
2. U236
3. U237
4. U232

Question 236 :
The fiber least prone to catch fire is

1. nylon
2. (2 ) polyester
3. cotton
4. terylene

Question 237 :
Formation of ozone hole is maximum over

1. Africa
2. India
3. Antarctica
4. Europe

Question 238 :
Milk is a natural

1. Solution
2. Emulsion
3. Mixture
4. Suspension

Question 239 :
Chemical name of bleaching powder is

1. Calcium chlorate
2. Calcium hypochlorite
3. Calcium chloro hypochlorite.
4. Calcium bi chloride

Question 240 :
Aspirin is

1. Methoxy benzoic acid
2. Methyl Salicilate
3. Acetyl Salicillc acid
4. Phenyl Salicilate