Question

St. MARY'S ENGUSTE MEDIUM SCHOOL, TIMRANA
UNIT TEST-3(2020-2021)
SCIENCE
MOS
MARKS-20
Alich properly of all tusent to fill balloons
(1) Alt is colourless
d) Air contains several different glases.
oy the method of filtratton, water can be free from
a alt later ut pare
call has wolphin
d) oll
the burning of food in the body gives out.
blNitrogen
a) Oxygen
4) This will sink in water tub
al Feather
c) carbon dioxide
d) water vapour
b) Eraser
c) paper
d) Ballon
Q-2 Fill in the blanks
is added in the water to kill germs.
produces energy for the body
3) The solution of in water is called brine.
4) The amount of in the air is called humidity
Q-3 True or False.
(4)
ADJ water
1) During monsoon season air has more water vapour. TV4 e.
2) To Kill germs, water must be boiled.
3) Breathe out air has more oxygen than inhaled air.
4) Water level is always horizontal to the ground.
(4)
Q-4 Write very short answers.
1) What is sewage?
2) What is respiration?
3) What is decandation?
4) How does tuberculosis spread?
(4
Q-5 Write question and answers.
1) Write any four properties of air?
2) How does water get polluted?​

Answer 1

Answer:

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