Everyday Science MCQS
Which one among the following methods is not effective in removing arsenic form contaminated ground water?
Reverse osmosis
Ton exchange
Boiling
Coagulation-adsorption
A box contains 3 white and 4 red balls. What is the probability that 2 balls taken out form it, are both going to be red?
43472
43503
43531
43562
After long periods of use , a gray spot develops on the inside of a bulb, this is because
The heat of the bulb scorches the glass at the top
The tungsten filament evaporates and collects there
Glass undergoes a change dew to the heat
Dust inside he bub condenses on the top
In a food chain, the solar energy utilized by plants is only?
0.01 percent
10 percent
0.1 percent
1 percent
Lung are enclosed in
Pleura membrane
Peritoneum
Pericardium
None of these
In the entire universe, What is the most abundant element?
Oxygen
Hydrogen
Lead
Iron
Akbar sold his old gun for Rs.900. Which he bought for 2500, His loss his:
0.64
0.8
0.15
0.94
Red blood cells (RBC) are also known as:
Erythrocytes
Thrombocytes
None of these
Leucocytes
The difference between 5 time and 3 times of a number is 36. Find the number:
15
18
10
12
Name the glass tube with the help of which of definite volume of liquid may be transferred.
Pyrometer
Psychrometer
potentiometer
Pipette
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