Every Day Science Paper - 1991
Partial Solution
9. (a) Write response on the following:
(i) The method by which men provides for his everyday needs and desires is called (Technology, Engineering, Versatility)
(ii) Of all the flying machines, man has made only (Balloon Jet Air Craft, Rockets) are suitable for space flight.
(iii) Transistors do not need a warm up period because they have no (Plate, Grid, Filament)
(iv) If an object gives off its own light, it is said to be (transparent, illuminated,luminous)
(v) An electric heater would be most likely to produce (X-rays, Ultra Violet, I R Radiations)
(b) Fill in the blanks:
(i) If the mass/volume ratio of a box containing stones is equal to the mass volume ratio of a box containing feather than the box containing stones has smaller volume of material in it.
(ii) In any one kind of atom, the number of proton, electrons is the same, it is the number of neutrons which may change from atom to atom of the same element.
(iii) The Kelvin scale of temperature is called the absolute scale.
(iv) The type of radiation hat is unaffected by magnetic field is called alpha.
(v) If we know the mass of an object and the force applied on it, it is possible to calculate acceleration of the object.
11. Match the following pairs from list I & list II
List I………….......……List II
Kidney…………........…Frog
Proteins………........…Antibody
Photosynthesis….....Hepatitis
Heredity……….......…Bleeding disease
Neuron…….........……Heart
Hemophilia…….........Nerve cell
Pace Maker….......…Chromosomes
Virus…………............Plant
Antigen……......….….Amino acid
Amphibian…….......…Nephron