What happens when you put the woven ends in oil heated in a pan?
When
you put the woven pan in the heated oil in the pan, initially the pan sinks to
the bottom of the pan. Then the puri swells and starts swimming in the oil. If
one does not fully swell, it does not float on full oil.
How
is salt obtained from sea water?
A
shallow pit or ditch is made in the land near the sea. Sea water is filled in
it. The water is allowed to dry (evaporate) in the sun. Salt remains on the
ground after the water dries up. This is how salt is obtained.
What
is the Dead Sea? explain
All
sea water is salty. But some sea water is too salty. A sea (or a lake)
containing 300 grams of salt per liter of water is called the Dead Sea. Even a
person who cannot swim does not drown in this sea. It starts swimming as it
lies in the water. No fish or similar organisms can live in the dead sea. The
Dead Sea is the saltiest of all seas.
Briefly
explain about Dandiyatra.
Before
India became independent, the British imposed a heavy tax on salt for the
people of India. In opposition to this law, Gandhi along with many other
people. S. In 1930, he set out on a long journey from Ahmedabad to the coast of
Dandi. There he broke the salt law. This journey is known as Dandiyatra.
What
does the newspaper article say about the complications caused by vitiligo?
In
the newspaper article about the problems caused by vitiligo (anaemla) it is
written that vitiligo affects the physical and mental health of children. Due
to this, children's development is uneven and their energy level (strength)
decreases. It also affects their learning ability.
Why
do you think tanks, coolers, old tyres, pots and pans are shown in the poster?
Water
is filled in the tank, cooler and pitcher shown in the poster. Mosquitoes lay
their eggs around them where there is standing water. Also, because old tires
and puddles are filled with water, mosquitoes lay their eggs there. These eggs
develop rapidly and take on the stage of a mosquito. These waterlogged places
are breeding grounds for mosquitoes. So the poster shows tanks, coolers, old
tires, pots and pans. We should keep such places clean.
Which
diseases are spread by flies and how?
Flies
spread diseases like diarrhoea, dysentery, cholera, typhoid. Flies sit on dirty
drains, garbage, stools, patient feces, vomit and sit on open food with germs
on their feet and spread the germs on the food. By eating such food we become
victims of disease.
What
can you do to prevent mosquitoes in your home, school and neighborhood?
We
will keep the following things in mind to avoid mosquitoes in our house, school
and neighborhood:
(1)
We will not allow water to flood anywhere in our house, school and
neighbourhood. We will fill puddles or confined water pits.
(2)
Throw the waste in the dustbin only. We will keep the garbage bag covered.
(3)
We will clean coolers, pots, water tanks etc. We will also keep cleanliness
around it.
(4)
We will spray kerosene and DDT in the flooded water.
If
someone has malaria, how do you detect it?
A
sick person with malaria will get a blood report in a hospital or pathology
laboratory. Malaria disease can be known from this blood report. A doctor can
also guess that a patient has malaria from the symptoms of malaria.
What
should be done to prevent the spread of diseases?
The
following measures should be taken to prevent the spread of diseases : (1)
Pools of sewage in our surroundings. Be careful not to overfill. (2) Care
should be taken to avoid mosquito infestation. (3) Keeping food covered and
kept in a mesh cupboard without leaving it open. (4) Do not eat stale as well
as open and stale food.
Why
should not drink dirty water?
Waste
water contains waste, scum and disease germs. Drinking such water causes
digestive system diseases like cholera, typhoid, dysentery and skin diseases.
Thus, drinking dirty water makes us sick. So do not drink dirty water.
Why
should we not eat open food?
Flies
sit on open food. When a fly sits on a patient's spit, sputum, vomit, diarrhea
or dirt, the germs of the disease are attached to the patient's legs or body.
When a fly comes from such a dirty place and sits on exposed food, the germs of
the disease attached to its legs and body mix with the food. Eating such food
makes us sick. So we should not eat open food.
State
the symptoms of malaria.
The
symptoms of malaria are as follows:
(1)
Patient has fever with chills and shivering. (2) Fever After some time it
subsides and then the fever comes again. Thus there is an up-and-down fever.
(3) The patient's head and limbs are painful. (4) The patient feels weak.
State
the symptoms of vitiligo (anemia).
Symptoms
of vitiligo are as follows: (1) Due to deficiency of iron in the patient's body
the amount of hemoglobin is much less than the required amount. (2) The patient
feels weak. Feels tired doing the slightest work. (3) Patient's body Turns
yellow. (4) The body feels less energetic. (5) It affects mental health in
addition to physical.
(3)
Fly is called the enemy of mankind.
When
a fly sits on garbage, feces and dirty material like patient's faeces, vomit,
sputum, the germs of the disease stick on its legs and body. When it sits on
our food with the germs of this disease, the germs of the disease mix in the
food. Hence the food becomes dirty and contaminated. Eating such food makes you
sick. Thus, the fly is called the enemy of mankind as it spreads many diseases
to humans.
We
should boil the water and then drink it.
Water
contains some floating impurities and disease germs. Boiling water kills the
germs in it. The water is then filtered to remove dead disease organisms and
floating impurities. Hence, by drinking boiled water, we avoid falling victim
to the disease. So we should boil the water and then filter it and drink it.