Hello friends. Tomorrow is my science quiz please list some important ques with ans .
Topics are:-
Earth,atmosphere, acid rain , sun , stars, satellites, cell , plants , microorganisms, blood , human body parts , acid , base, salt , metal , non - metal , gases , electric circuit and reflection images
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Question 1: What is air pollution?
Answer: Contamination of air to make it harmful for living beings is called air pollution.
Question 2: What are the natural causes of air pollution?
Answer: Smoke and dust from forest fire and volcano pollute the air are the natural causes of air pollution.
Question 3: What is the benefit of ozone layer?
Answer: Ozone layer prevents harmful ultraviolet radiations from the sun from entering our atmosphere.
Question 4: What is smog?
Answer: A mixture of smoke and fog is called smog.
Answer: Contamination of air to make it harmful for living beings is called air pollution.
Question 2: What are the natural causes of air pollution?
Answer: Smoke and dust from forest fire and volcano pollute the air are the natural causes of air pollution.
Question 3: What is the benefit of ozone layer?
Answer: Ozone layer prevents harmful ultraviolet radiations from the sun from entering our atmosphere.
Question 4: What is smog?
Answer: A mixture of smoke and fog is called smog.
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WHEN WAS THE FIRST SATELLITE LAUNCHED?
IN 19TH APRIL 1975
WHAT IS A CELL
THE STRUTURAL UNIT OF AN ORGAN IS CALLED A CELL
WHAT IS ACIDIC RAIN?
BURNING OF COAL RELEASES SULPHER DIOXIDE GAS . IT IS AN EXTREMELY SUFFOCATING AND CROSSIVE GAS . MORE EVER,PETROL ENGINESGIVE OFF GASOUES ASIDS OF NITROGEN. OXIDES OF SULPHER AND NITROGEN DISSOLVE IN RAIN WATER AND FORMS ACIDS. SUCH RAIN IS CALLED ACIDIC RAIN.
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