Why is paper moistened before filtration?

Why diatoms are used in filtration and polishing?

Why is waste water treated before recycling it?

What is glomerular filtration pressure or net effective filtration pressure?

An athelete runs a certain distance before taking a long jump . Why ?

Effective filtration pressure was calculated to be 20 mmHg, where glomerular hydrostatic pressure was 70 mmHg. Which other pressure is affecting the filtration process? How much is it?

Give scientific reasons: The constituent substances of a colloid cannot be separated by ordinary filtration.

Give scientific reasons: An iron tyre is heated before it is fitted on a wheel

What would happen if the sperm fuses with the egg before it reaches the fallopian tube?

Answer the given question orally : Why are leather articles like purses, wallets, belts, footwear always polished before storing away?