Chemistry Test - 2

• 1.

  The substance most commonly used as a food preservatives is

  
  
  a 

  sodium carbonate
  b 

  tartaric acid
  c 

  acetic acid
  d 

  sodium salt of benzoic acid

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  26.32% users answered right
  Correct Answer: d

  Comment · 0 · 
• 2.

  Alum stops bleeding in minor cuts because of

  
  
  a 

  solvation
  b 

  emulsion
  c 

  dialysis
  d 

  coagulation

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  73.68% users answered right
  Correct Answer: d

  Comment · 0 · 
• 3.

  Water can be separated from alcohol water mixture by

  
  
  a 

  decantation
  b 

  evaporation
  c 

  distillation
  d 

  sublimation

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  36.84% users answered right
  Correct Answer: c

  Comment · 0 · 
• 4.

  
  

  Hydrogen is not found in atmosphere because

  
  
  a 

  it is highly inflammable
  b 

  it is the lightest gas
  c 

  it is absorbed by plants
  d 

  it immediately combines with oxygen to form water

   

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  41.18% users answered right
  Correct Answer: b

  Comment · 0 · 
• 5.

  For determination of the age of which among the following is carbon dating method used?

  
  
  a 

  Fossils
  b 

  Rocks
  c 

  Trees
  d 

  1 & 2 above

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  56.25% users answered right
  Correct Answer: d

  Comment · 0 · 
• 6.

  A substance which readily forms colloidal solution in contact with water is called

  
  
  a 

  Extrinsic colloid
  b 

  Associated colloid
  c 

  Hydrophobic colloid
  d 

  Hydrophilic colloid

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  53.33% users answered right
  Correct Answer: d

  Comment · 0 · 
• 7.

  When conc.H2SO4  is added to dry KNO3, brown fumes are evolved. These fumes are due to

  
  
  a 

  SO3
  b 

  SO2
  c 

  NO2
  d 

  N2O

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  61.54% users answered right
  Correct Answer: c

  Comment · 0 · 
• 8.

  The polymer used in making plastic crockery is

  
  
  a 

  Decron
  b 

  Nylon
  c 

  Bakelite
  d 

  Melamine

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  7.14% users answered right
  Correct Answer: d

  Comment · 0 · 
• 9.

  Preparation of Dalda or Vanaspati ghee from vegetable oil utilizes the following process:

  
  
  a 

  Hydrolysis
  b 

  Oxidation
  c 

  Hydrogenation
  d 

  Ozonolysis

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  66.67% users answered right
  Correct Answer: c

  Comment · 0 · 
• 10.

  Which of the following chemicals is used in photography?

  
  
  a 

  Aluminium hydroxide
  b 

  Silver bromide
  c 

  Potassium nitrate
  d 

  Sodium chloride

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  80.00% users answered right
  Correct Answer: b

  Comment · 0 · 
• 11.

  Which gas is used as fire extinguisher?

  
  
  a 

  Carbon dioxide
  b 

  carbon monoxide
  c 

  carbon suboxide
  d 

  sulpur dioxide

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  73.33% users answered right
  Correct Answer: a

  Comment · 0 · 
• 12.

  Cream gets separated out of milk when it is churned. This is due to

  
  
  a 

  gravitational force
  b 

  centripetal force
  c 

    centrifugal force
  d 

  frictional force

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  71.43% users answered right
  Correct Answer: c

  Comment · 0 · 
• 13.

  The Lustre of the metals is because of

  
  
  a 

  high density, due to closed packing of atoms
  b 

  high polish
  c 

  reflection of light due to the presence of free electrons
  d 

  absorption of light due to the presence of cavities

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  46.15% users answered right
  Correct Answer: c

  Comment · 0 · 
• 14.

  Pasteurisation is the process which milk is heated to

  
  
  a 

  600C for 10 minutes
  b 

  630C for 20 minutes
  c 

  630C for 30 minutes
  d 

  720C for 10 minutes

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  25.00% users answered right
  Correct Answer: c

  Comment · 0 · 
• 15.

  The freezer in a refrigerator fitted near the top

  
  
  a 

  to keep it away from hot compressor which is nearer to the botton
  b 

  because of convenience
  c 

  it facilities convection currents
  d 

  to minimise power consumption

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  41.67% users answered right
  Correct Answer: c

  Comment · 0 · 
• 16.

  Denatured spirit is ethanol mixed with

  
  
  a 

  Petrol
  b 

  Kerosene
  c 

  Water
  d 

  Pyridine

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  33.33% users answered right
  Correct Answer: d

  Comment · 0 · 
• 17.

  The most abundant inert gas in the atmosphere is

  
  
  a 

  Helium
  b 

  Neon
  c 

  Argon
  d 

  Krypton

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  50.00% users answered right
  Correct Answer: c

  Comment · 0 · 
• 18.

  Which metal is extracted from sea water?

  
  
  a 

  Potassium
  b 

  Magnesium
  c 

  Aluminium
  d 

  Beryllium

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  41.67% users answered right
  Correct Answer: b

  Comment · 0 · 
• 19.

  Water is not effective in extinguishing a fire caused by petrol because

  
  
  a 

  the flame is too hot for water to cool it down
  b 

  water and petrol react chemically
  c 

  water and petrol are miscible with each other
  d 

  water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  63.64% users answered right
  Correct Answer: d

  Comment · 0 · 
• 20.

  Ruby and sapphire are oxides of

  
  
  a 

  copper
  b 

  tin
  c 

  iron
  d 

  aluminium

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  15.38% users answered right
  Correct Answer: d

  Comment · 0 · 
• 21.

  The gas which turns into liquid at the lowest temperature among the following is

  
  
  a 

  hydrogen
  b 

  oxygen
  c 

  helium
  d 

  nitrogen

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  45.45% users answered right
  Correct Answer: a

  Comment · 0 · 
• 22.

  Detergents clean surface on the principle of

  
  
  a 

  viscosity
  b 

  surface tension
  c 

  elasticity
  d 

  floatation

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  85.71% users answered right
  Correct Answer: b

  Comment · 0 · 
• 23.

  Ammonial is a mixture of

  
  
  a 

  aluminium powder and ammonium nitrate
  b 

  aluminium powder and ammonium chloride
  c 

  aluminium powder and ammonium sulphate
  d 

  aluminium powder and ammonium nitrate

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  33.33% users answered right
  Correct Answer: a

  Comment · 1 · 
• 24.

  White coal is

  
  
  a 

  Uranium
  b 

  Hydro-electricity
  c 

  Diamond
  d 

  Ice

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  16.67% users answered right
  Correct Answer: b

  Comment · 0 · 
• 25.

  The residue left after extracting juice from sugarbeet and sugarcane is called

  
  
  a 

  molasses
  b 

  bagasse
  c 

  whey
  d 

  biomass

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  54.55% users answered right
  Correct Answer: b

  Comment · 0 · 
• 26.

  Candle is a mixture of

  
  
  a 

  paraffin was and stearic acid
  b 

  Bees wax and stearic acid
  c 

  Higher fatty acids and stearic acid
  d 

  Bees wax and paraffin wax

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  33.33% users answered right
  Correct Answer: a

  Comment · 0 · 
• 27.

  Aqua regia is a 1:3 mixture, by volume, of

  
  
  a 

  conc. nitric acid and conc. Hydrochloric acid
  b 

  conc. Hydrochloric acid and conc. nitric acid
  c 

  conc. nitric acid and conc. Sulphuric acid
  d 

  conc. Sulphuric acid and conc. nitric acid

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  36.36% users answered right
  Correct Answer: a

  Comment · 0 · 
• 28.

  What is the maximum Water Vapour content in the atmosphere?

  
  
  a 

  2 to 3 per cent
  b 

  3 to 4 per cent
  c 

  4 to 5 per cent
  d 

  5 to 6 per cent

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  45.45% users answered right
  Correct Answer: b

  Comment · 0 · 
• 29.

  The amount of chlorine available in water after disinfection is called as

  
  
  a 

  free chlorine
  b 

  residual chlorine
  c 

  free available chlorine
  d 

  combined available chlorine

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  58.33% users answered right
  Correct Answer: b

  Comment · 0 · 
• 30.

  
  

  Nuclear energy is a mineral based energy source, It is derived from

  
  
  a 

  uranium
  b 

  thorium
  c 

  plutonium
  d 

  All of the above

   

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  76.92% users answered right
  Correct Answer: d

  Comment · 0 · 
• 31.

  Zinc sulphate is commonly used as

  
  
  a 

  fungicide
  b 

  herbicide
  c 

  rodenticide
  d 

  deodorant

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  33.33% users answered right
  Correct Answer: c

  Comment · 0 · 
• 32.

  Aspirin is chemically known as

  
  
  a 

  methyl salicylate
  b 

  hydroxysalicylate
  c 

  acetylsalicylic acid
  d 

  alkylsalicylic acid

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  46.15% users answered right
  Correct Answer: c

  Comment · 0 · 
• 33.

  Wax used for making candle is chemically a mixture  of

  
  
  a 

  aliphatic hydrocarbons
  b 

  aromatic  hydrocarbons
  c 

  cyclic hydrocarbons
  d 

  aliphatic and aromatic hydrocarbons

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  50.00% users answered right
  Correct Answer: a

  Comment · 0 · 
• 34.

  Photo oxidation process is initiated by

  
  
  a 

  light
  b 

  heat
  c 

  oxygen
  d 

  catalyst

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  85.71% users answered right
  Correct Answer: a

  Comment · 0 · 
• 35.

  Major gaseous pollutant of the thermal power station is

  
  
  a 

  H2S
  b 

  NH3
  c 

  NO2
  d 

  SO2

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  30.77% users answered right
  Correct Answer: d

  Comment · 0 · 
• 36.

  Mortar is a mixture of water, sand and

  
  
  a 

  Slaked lime
  b 

  Quick lime
  c 

  Limestone
  d 

  Gypsum

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  7.69% users answered right
  Correct Answer: a

  Comment · 0 · 
• 37.

  Which of the following substance is highly plastic?

  
  
  a 

  Quartz
  b 

  Mica
  c 

  Granite
  d 

  Clay

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  25.00% users answered right
  Correct Answer: d

  Comment · 0 · 
• 38.

  The National Chemical Laboratory (India) is located in

  
  
  a 

  Mumbai
  b 

  Bangaluru
  c 

  Hyderabad
  d 

  Pune

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  81.82% users answered right
  Correct Answer: d

  Comment · 0 · 
• 39.

  Which of the following metals does not react with water to produce Hydrogen?

  
  
  a 

  Potassium
  b 

  Cadmium
  c 

  Sodium
  d 

  Lithium

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  46.15% users answered right
  Correct Answer: b

  Comment · 0 · 
• 40.

  One of the constituents of tear gas is

  
  
  a 

  Ethane
  b 

  Ethanol
  c 

  Ether
  d 

  Chloropicrin

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  18.18% users answered right
  Correct Answer: d

  Comment · 0 · 
• 41.

  Silver halides are used in photographic plates because they are

  
  
  a 

  oxidised in air
  b 

  soluble in hyposolution
  c 

  reduced by light
  d 

  totally colourless

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  30.00% users answered right
  Correct Answer: c

  Comment · 0 · 
• 42.

  Tetra ethyle lead (TEL) is

  
  
  a 

  a catalyst in burning fossil fuel
  b 

  an antioxidant
  c 

  a reductant
  d 

  an antiknock compound

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  58.33% users answered right
  Correct Answer: d

  Comment · 0 · 
• 43.

  If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by

  
  
  a 

  Mercury
  b 

  Lead
  c 

  Iron
  d 

  Arsenic

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  76.92% users answered right
  Correct Answer: b

  Comment · 0 · 
• 44.

  Detergents are

  
  
  a 

  sodium salts of fatty acids
  b 

  sodium salts of sulphuric acids
  c 

  sodium salt of benzoic acid
  d 

  None of the above

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  0.00% users answered right
  Correct Answer: b

  Comment · 1 · 
• 45.

  
  

  The chemical(s) most commonly used for cloud seeding or $artificialra\in mak\in g$ is/are

  
  
  a 

  Silver Iodide
  b 

  Sodium Chloride
  c 

  Dry ice or frozen carbon dioxide
  d 

  All the above

   

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  33.33% users answered right
  Correct Answer: a

  Comment · 0 · 
• 46.

  The noble gas used in radiotherapy is

  
  
  a 

  neon
  b 

  argon
  c 

  radon
  d 

  xenon

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  53.85% users answered right
  Correct Answer: c

  Comment · 0 · 
• 47.

  White phosphorus is always kept under

  
  
  a 

  benzene
  b 

  kerosene
  c 

  ether
  d 

  water

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  30.77% users answered right
  Correct Answer: d

  Comment · 0 · 
• 48.

  Galena is a mineral of

  
  
  a 

  iron
  b 

  gold
  c 

  lead
  d 

  calcium

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  50.00% users answered right
  Correct Answer: c

  Comment · 0 · 
• 49.

  Magnalium is an alloy of

  
  
  a 

  Aluminium and Magnesium
  b 

  Magnesium and Tin
  c 

  Aluminium and Zinc
  d 

  Manganese and Magnesium

  
  
  Explanation:
  Subject: 

  GENERAL SCIENCE

  60.00% users answered right
  Correct Answer: a

  Comment · 0 · 
• 50.

  
  

  Cooking gas is a mixture of

  
  
  a 

  methane and ethylene
  b 

  carbon dioxide and oxygen
  c 

  butane and propane
  d 

  carbon monoxide and carbon dioxide
  Explanation:
  Subject: 

  GENERAL SCIENCE

  57.14% users answered right
  Correct Answer: c

  Comment · 3 ·