Water waves pass from deep into the shallow region and are then refracted. The characteristics of waves which will remain constant is _____...?
(A) Direction
(B) Frequency
(C) Speed
(D) Wavelength
✅ Correct Answer:Frequency
Comments
Water waves pass from deep into the shallow region and are then refracted. The characteristics of waves which will remain constant is _____...?
Which is a water purification technology that uses a semipermeable membrane to remove ions, molecules and larger particles from drinking water...?
(A) Filtration
(B) Reverse Osmosis (RO)
(C) Sedimentation
(D) Distillation
✅ Correct Answer:Reverse Osmosis (RO)
Comments
Which is a water purification technology that uses a semipermeable membrane to remove ions, molecules and larger particles from drinking water...?
Ten identical steel balls, each with a mass of 27 g, are immersed in a measuring cylinder initially containing a certain volume of water. The water level rises by 50 cm³ after immersing the balls. What is the density of the steel...?
(A) 0.90 gm/cm^3
(B) 8.1 gm/cm^3
(C) 9.0 gm/cm^3
(D) 13.5 gm/cm^3
✅ Correct Answer:9.0 gm/cm^3
Comments
Ten identical steel balls, each with a mass of 27 g, are immersed in a measuring cylinder initially containing a certain volume of water. The water level rises by 50 cm³ after immersing the balls. What is the density of the steel...?
Which of the following is the study of micro- organisms, mostly viruses and single called organisms such as bacteria, yeasts and protozoa ...?
(A) Microbiology
(B) Micrology
(C) Histopathology
(D) Tavelogy
✅ Correct Answer:Microbiology
Comments
Which of the following is the study of micro- organisms, mostly viruses and single called organisms such as bacteria, yeasts and protozoa ...?