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MCQs4All - Chemistry MCQs for NTS, FPSC, CSS, IELTS, TOEFL

Question. Allotropic form of phosphorus that is poisonous is___________________?
  1. White
  2. Red
  3. Black
  4. Violet
Question. Pressure in gas discharge tube was kept________________?
  1. 10 torr
  2. 1 torr
  3. 0.1 torr
  4. 0.01 torr
Question. Because of its ability to combine with both oxygen and nitrogen aluminium metal is used_____________?
  1. As nitrometer
  2. To remove air bubbles from molten metal
  3. To produce alloy
  4. As insulator
Question. Solution having the property of a very little change in pH on adding a small amount of strong acid or base is called________________?
  1. buffer solution
  2. normal solution
  3. standard solution
  4. neutral solution
Question. The metal which is used in thermite process because of its activity is____________________?
  1. iron
  2. copper
  3. aluminium
  4. zinc
Question. List of elements based on hydrogen scale is called________________?
  1. periodic table
  2. groups
  3. periods
  4. electrochemical series

Chemistry MCQs for NTS, FPSC, CSS, PPSC, PMS, UTS, FTS, OTS, Teaching, CT, PTC, SST, B.Ed, M.Ed of past papers
Question. In K2Cr2O7 the oxidation number of chromium is____________________?
  1. 7
  2. 6
  3. -7
  4. -6
Question. Across short period the melting and boiling point increase upto __________________?
  1. IIIA group
  2. IVA group
  3. VA group
  4. VIA group
Question. Plasma is used in_________________?
  1. Fluorescent bulb
  2. Neon signs
  3. Lasers
  4. All of these
Question. If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?
  1. H2 is deposited at cathode
  2. Colour of the solution becomes fade
  3. Cu is deposited at anode
  4. All are possible
Question. Methanol can be obtained from_________________?
  1. water gas
  2. destructive distillation of wood
  3. methane
  4. all
Question. Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________?
  1. one / seventeen
  2. sixteen / seventeen
  3. one / three
  4. two / three
Question. For a gas where volume and pressures are 1dm3 and 2 atm respectively what should be its new volume when pressure is increased to 6 atm at constant temperature ?
  1. 1/2dm3
  2. 1/3dm3
  3. 1/4dm3
  4. 2/3dm3
Important MCQs
Question: A man who’s eighty years old?
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Question: Equatorial diameter of seventh planet Uranus from Sun is
Question: The border between USA and Canada is officially known as ?
Question: Tooth decay is caused by?
Question: Region outside event horizon of rotating black holes is classified as
Question: Second planet nearest to Sun after Mercury is
Question: Father of rivers is called ____________?
Question: The main function of the kidney is ____________?
Question: The largest lake of salt water in the world is ?
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