General Science

Importance of Water
Water can be kept clean by detergents, if they are
not poisonous
odorless
biodegradable
non biodegradable
Author: rikazzz Comment
Importance of Water
The population which does not have tap water in their homes, is
two-third of the world population
one-third of the world population
half of the world population
quarter of the world population
Author: rikazzz Comment
Solutions
A ph scale ranges from zero to
10
6
11
14
Author: rikazzz Comment
Sound Waves
The highest level of frequency which human ear can detect is
2 Hz
20 Hz
20kHz
2kHz
Author: rikazzz Comment
Mixtures
A method which is used to separate, analyze or identify the different components in mixture such as food, dyes and inks is called
chromatography
combustion
spectroscopy
fractional distillation
Author: rikazzz Comment
Electric Circuits and Currents
The resistor that contains a long coil of ‘nichrome’ is known as
variable resistor
thermistor
transistor
fixed resistor
Author: rikazzz Comment
Human Transport System
If bacteria are taken over by white blood cells, their life span
decreases
increases
remains same
may increase or decrease
Author: rikazzz Comment
Human Transport System
The blood in left hand on the side of heart is
impure
deoxygenated
pumped to the body
from veins
Author: rikazzz Comment
Digestive System
The enzymes that digest fats are known as
lipase
trypsin
maltase
fatase
Author: rikazzz Comment
Mixtures
A technique which is used to desalinate water, is
reverse osmosis
distillation
filtration
heating
Author: rikazzz Comment

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