1⟩ How Potassium permanganate is use for purifying drinking water?
Because it is an oxidizing agent
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2⟩ What is the element required for solar energy conversion?
Silicon
3⟩ What is female sex hormone?
Oestrogen is the female sex hormone
4⟩ WHICH FORCE IS RESPONSIBLE FOR REVOLVING THE PLNAT AROUND THE SUN?
centrifugal force
when a solar system is taken in to consideration
the gravitational force acts as a centripetal force towards
the center.
on other side equal amount of centrifugal force will be
present which helps the planet to revolve round the earth.
5⟩ Who is first ethinc Indian women in space?
Kalpana Chawla
6⟩ Who is first Muslim president of India?
apj abdul kalam
7⟩ RATIO IN OF WBC AND RBC IN BLOOD?
1:700-normal
1:1000-in peripheral blood
8⟩ What is the approximate time required for a heart beat?
72 heartbeats/60 sec so 1 heartbeat 1.2 sec
9⟩ Due to which the energy emitted by the Sun?
its due to nuclear fusion no fission, two hydrogen nucliii
combine to form a single nucleus of Helium
10⟩ A moter Cycle run on a circular road @ 40Km/hours Speed. The total weight of the Moter cycle with rider is 50Kg. He has started from a point and finished the jurney till same point with four round, which distance is 40Km per round find the toter work done by the rider?
workdone will be zero (0) beacuse total displacement is
zero. wee know that workdone=force * dicplacement
11⟩ Why the sky appears blue?
Because of scattering of light
12⟩ Which chemical is used to ripe the fruits?
Acytelene
13⟩ What is the use of Dynamo?
It converts the mechanical energy in to electrical energy
14⟩ What is the chemical name for Baking Soda?
Sodium Bicaronate
15⟩ Which the base of quartz crystal working in the watch?
Piezo electric effect
16⟩ Which animal uses sounds as its eyes?
Bat
17⟩ Which is the heaviest body of our solar system.a)Sunb)Uranusc)Jupiterd)Saturn
JUPITER with a mass 318 times that of the Earth.
18⟩ How the Oil rises up the wick in a lamp?
It is because of the capillary action phenomenon
19⟩ Why does a big fire in the open appear to be fanned by strong winds?
The surrounding heated air rises and cool air rushes in to
create a fanning effect
20⟩ Which absorbs the ultraviolet rays in the atmosphere?
ozone layer
