❑ Select the best option/answer and fill in the appropriate Box on the Answer Sheet:

  1. Cooking gas is a mixture of which of the following two gases?

(a) Methane and Carbon dioxide                               (b) Oxygen and Nitrogen

(c) Bautane and Propane                                                (d) Oxygen and Methane

  1. Nameplates made of brass get discoloured in air because of the presence of which of the
    following gases in the air?

(a) Oxygen                                                                        (b) Nitrogen

(c) Carbon dioxide                                                          (d) Hydrogen sulphide

  1. X-rays are produced when a stream of electrons in an X-ray tube:

(a) Hits the glass wall of the tube                              (b) Shrikes metal target

(c) All of these                                                                 (d) None of these

  1. Ornithology is the science which deals with:

(a) Study of bones              (b) Study of birds         (c) Study of smells         (d) None of these

  1. The study of the origin and physical and cultural development of mankind is called:

(a) Toxicology                     (b) Herpetology             (c) Anthropology           (d) None of these

  1. Storage batteries commonly contain:

(a) Copper                             (b) Mercury                     (c) Lead                              (d) Iron

  1. Water is a universal solvent for what reactions.

(a) Physical                          (b) Chemical                   (c) Nuclear                         (d) Biochemical

  1. The volume percentage of nitrogen in air is:

(a) 60%                                  (b) 67%                            (c) 74%                               (d) 78%

  1. Air contains volume of carbon dioxide approximately:

(a) 3 %                                   (b) 33%                            (c) 0.3 %                             (d) 0.03%

  1. The gases which are used by divers as an artificial atmosphere are helium and: (a) Nitrogen (b) 03Lygga                        (c) Neon        (d) Carbon monoxide
  2. Atomic bomb is based on the principle of:

(a) Nuclear fusion              (b) Nuclear fission       (c) All of these                 (d) None of these

  1. The liberation of energy in sun is due to:

(a) Fission reaction            (b) Fusion reaction      (c) All of these                 (d) None of these

  1. 1024 bytes equal to:

(a) One kilo bytes              (b) One mega byte         (c) One giga byte              (d) One tera byte

  1. A bus with 32 data line can transport how many bits at a time?

(a) 8091 bits                        (b) 16 bits                        (c) 1024 bits                      (d) 32 bits

  1. The second most abundant metal found in the earth’s crust is:

(a) Iron                               (b) Aluminium                  (c) Calcium                        (d) Sodium

  1. In the periodic table, elements have been arranged:

(a) In order of increasing volume                                (b) In order of increasing atomic number

(c) All of these                                                                 (d) None of these

  1. Ionization energy increases along the:

(a) Period                                                                          (b) Group

(c) All of these                                                                 (d) None of these

  1. The silvered surface of thermos flask prevents transfer of heat by:

(a) Conduction                 (b) Convection                  (c) Reflection                   (d) Radiation

  1. Energy of a body due to its motion is called:

(a) Heat energy                 (b) Kinetic energy                   (c) Potential energy (d) Light energy

  1. A moving ball stops due to the action of:

(a) Nuclear Force             (b) Frictional Force (c) Electric Force                     (d) Magnetic Force

  1. Radio waves are:

(a) Sound waves                                                              (b) Electromagnetic waves

(c) Water waves                                                               (d) Heat waves

  1. The device which converts analogue signal to digital signal is called:

(a) Transformer                 (b) CPU                               (c) Modem                        (d) Photodiode

  1. For making laser, usually we use:

(a) Uranium                       (b) Ruby                             (c) Magnesium                  (d) Iron

  1. Argon laser is used for operating the:

(a) Eye cancer                   (b) Glaucoma                   (c) Kidney stone              (d) Bone disease

  1. When we move from left to right in second period, the atomic number of the elements:

(a) Increases                                                                   (b) Increases with constant state

(c) All of these                                                                 (d) None of these

  1. Generally in a given period in the periodic table, as we move from left to right, the electropositive character of elements:

(a) Increases                                                                      (b) Decreases

(c) Neither increases nor decreases                            (d) Decreases then increases

  1. Which of the following are two numbers of “Binary Codes”?

(a) 0 and 9                          (b) 1 and 3                          (c) 0 and 1                         (d) 9 and 1

  1. Bill Gates is more well-known as:

(a) The CEO of Apple Macintosh                               (b) The CEO of IBM

(c) The owner of Microsoft Corporation                 (d) The inventor of the personal computer

  1. Name the unit to express the memory of a computer.

(a) Compiler                      (b) Bus                                 (c) Byte                               (d) Clone

  1. When AIDS is diagnosed for the cause of AIDS, the patient may live for about: (a) Ten years (b) Seven years                   (c) Five years                       (d) Two years
  2. Iron deficiency causes:

(a) Bone deformity                                                          (b) Irregular heart beat

(c) Tooth decay                                                                (d) Anaemia



  1. Which of the following is not caused by bacteria? (a) Tetanus (b) Whooping Cough (c) Pneumonia (d) Rabies
  2. Which of the following is caused by bacterial infection? (a) Malaria (b) Tetanus  (c) Cancer     (d) Rabies
  3. The human diploid cell vaccine is used for: (a) Smallpox (b) Rabies              (c) Diabetes (d) Tuberculosis
  4. Anaemia is caused in man due to the deficiency of: (a) Folic acid (b) Vitamin A                     (c) Vitamin B-12                (d) Iron
  5. Acquired Immune Deficiency Syndrome (AIDS) is caused by: (a) Protozoa (b) Virus      (c) Fungus    (d) Bacteria
  6. All of the following are viral diseases, except: (a) AIDS (b) Chicken Pox (c) Cholera   (d) Rabies
  7. Haemophilia means failure of the: (a) Heart to contract (b) Kidney to filter (c) Blood to clot (d) Stomach to digest
  8. Which of the following is involved in blood clotting? (a) Sodium (b) Magnesium (c) Calcium                         (d) Potassium
  9. Deficiency of chloride cause the impaired growth in: (a) Animals (b) Infants (c) Plants      0) Young man
  10. The major part of natural gas, petroleum and coal consist of: (a) Carbon dioxide (b) Chlorine                         (c) CFC          (d) Methane
  11. Which one is metal? (a) Gypsum (b) Iron                         (c) Limestone                       (d) Granite
  12. What is used in making of alloys? (a) Gypsum (b) Granite                (c) Chromium                    (d) Lime stone
  13. Which type of Uranium is used in the fission process? (a) Uranium — 234 (b) Uranium — 235         (c) Uranium — 236           (d) Uranium — 237
  14. The large plates of solar panels are painted: (a) Red (b) White (c) Yellow    (d) Black
  15. Bio gas is the common name of: (a) Natural gas (b) Oxygen                    (c) Carbon dioxide            (d) Nitrogen
  16. One thousand watt power is called as: (a) 5 kilowatt (b) 0.8 kilowatt               (c) 1.0 kilowatt                   (d) 1.5 kilowatt
  17. Washing soda in water behaves: (a) Alkaline (b) Acidic           (c) Neutral    (d) None of these
  18. Which material is used for bleaching paper? (a) Caustic soda (b) Sodium           (c) Lime        (d) None of these

Which are air pollutants? (a) Aerosols      (b) Sewage    (c) DDT         (d) Fertilizers