BCS written syllabus

SYLLABUS FOR BCS (WRITTEN) EXAMINATION     
       
13/235 
 
GENERAL SCIENCE AND TECHNOLOGY  
(COMPULSORY) 
Subject Code: 010 
Part – A: General Science 
Marks - 60 
 
i. Light: Nature, Spectrum, Different colours and wavelengths, UV, IR, and LASER, Reflection of Light, 
Refraction of Light, Total Internal Reflection of Light, Lenses, Thin converging lens, Dispersion of 
light, particle nature of light, Einstein‘s photoelectric equation, photocells 
 
ii. Sound: Hearing mechanism, Decibel, Frequency, Sound machines in home and around –,  Microphone, 
Loud speaker, Public address system, Characteristics of a sound note, Formation of stationary waves in 
stretched string, Laws of vibrating st rings, Beats, Doppler Effect, Applications and limitations of 
Doppler Effect, Echoes, Absorption of sound wave, Reverberations, Fundamentals of Building acoustics, 
Statement of Sabine's formula 
 
iii. Magnetism: Polarity and relationship with current, Bar magnet, Magnetic lines of force, Torque on a bar 
magnet in a magnetic field, Earth‘s magnetic field as a bar magnet, Tangent galvanometer, Vibration 
magnetometer, Para, dia and ferromagnetic substances with examples, Electromagnets and permanent 
magnets 
 
iv. Acid, Base and Salt:  Acid-base concepts; characteristics of acids and bases; acid -base indicators; uses 
of acids and bases in daily life and caution in handling them; social effects of misuse of acids; reason for 
acidity in stomach and selection of the right food; pH; measurement and importance of pH of substances; 
salts; characteristics of salts; necessity of salt in daily life; uses of salts in agriculture and industries 
 
v. Water: Properties of water; melting and boiling points of water; electrical conductivity; s tructure of 
water; hydrogen bonding; sources of water; sources of fresh water in Bangladesh; water quality 
parameters (colour and taste; turbidity; presence of radioactive substances; presence of waste; dissolved 
oxygen; temperature; pH and salinity); recy cling of water; role of water in conservation of nature; 
necessity of quality water; purification of water (filtration; chlorination; boiling and distillation); reasons 
for pollution of water sources in Bangladesh; effects of water pollution on plants, ani mals and human 
beings; effects of global warming on fresh water; strategy for preventing water pollution and 
responsibility of citizens or public awareness; prevention of water pollution by industries; prevention of 
water pollution due to soil erosion from  agricultural land; conservation of water sources and 
development 
 
vi. Our resources: Soil; types of soil; soil pH; reasons and effects of soil pollution; natural gas and its main 
compositions; processing, uses and sources of natural gas, petroleum and coal; f orestry; limitations and 
conservation of our resources 
 
vii. Polymer: Natural and synthetic polymer; polymerization process; sources, characteristics and usage of 
natural and synthetic polymers; manufacturing process, characteristics and uses of fibers, silk, w ool, 
nylon and rayon; physical and chemical properties of rubber and plastic; role of rubber and plastic for 
environmental imbalance; aware of using rubber and plastic 
 
viii. Atmosphere: Biosphere and Hydrosphere, Ionosphere, role of oxygen, carbon dioxide and n itrogen. 
Potable and polluted water, Pasteurization.