Biology
In which phylum does a hydra belongs to?
coelenterata
What is the form of energy that gives sensation of hearing called?
Sound
Which is the largest planet in the solar system?
Jupiter
In which type of mixture, the particles cannot be seen?
Homogeneous
Name two abiotic and two biotic components of environment.
abiotic (non living)- air, light
biotic (living) - animals, plants
What are animals without backbone called?
Invertebrates
Which type of wave is sound wave?
Longitudinal wave
Which is the hottest planet?
Venus
Name the method to separate the mixture of salt and water.
Evaporation
Name the wildlife reserve of nepal.
Koshi Tappu Wildlife reserve
Which is the most important part of cell?
Nucleus
What is the number of complete oscillations made in 1 second called?
frequency
Which is the thinnest layer of the earth?
crust
What is vapourization?
The process of conversion of liquid into gas is called vapourization.
Name the hunting reserve of nepal.
Dhorpatan hunting reserve
What are the animals with both male and female organs called?
Hermaphrodite
What is the motion of child in swing?
Oscillatory motion
What is weather science called?
Meteorology
What is crystal?
The homogeneous mixture of same kind of substance with fixed geometrical shape is called crystal.
What is environment?
The total sum of physical and biological factors that directly influence the survival, growth, development and reproduction of organisms is called environment.
Name the malarial parasite
Plasmodium
What is the motion of potter's wheel?
Rotatory motion
which device is used to measure the humidity?
Hygrometer
What is physical change? Give example
Physical change is the change of state of matter and there is no change in chemical properties of the matter. Eg: changing ice into water
What is soil erosion?
•The gradual destruction of top soil through the action of water, wind etc. is called soil erosion.
-The washing up or blowing off of top fertile soil due to wind or water is called soil erosion.