Everyday Science Mcqs

lightest metal is__________?

by
lightest metal is__________?A. Lithium
B. Sodium
C. Magnesium
D. Aluminium

The lightest or least dense metal that is a pure element is lithium, which has a density of 0.534 g/cm3. This makes lithium nearly half as dense as water, so if lithium was not so reactive, a chunk of the metal would float on water.

 

Which of the following is used in water purification?

by
Which of the following is used in water purification?A. Reverse Osmosis
B. Osmosis
C. Cytolysis
D. Turgor Pressure

Reverse osmosis is a water purification process that uses a partially permeable membrane to remove ions, unwanted molecules and larger particles from drinking water.

 

___________ is a strong smelling agent added to LPG cylinders to detect leakage?

by
___________ is a strong smelling agent added to LPG cylinders to detect leakage?A. Nitrogen Peroxide
B. Ethyl Mercaptan
C. Carbon Monoxide
D. Sulphur Dioxide

LPG gas is basically propane and butane, and it is odorless in its natural state. The smell that you notice when there is a leak is actually of an entirely different agent, called Ethyl Mercaptan. This substance is added to the gas when it leaves the main storage terminals

 

Which organ is considered as chemical factory of human body ?

by
Which organ is considered as chemical factory of human body ?

A. Stomach
B. Intestine
C. Liver
D. Kidneys

The liver is called the chemical factory of the human body. The basic reason for this is that just like a factory is the main point of production, a liver also is the prime source which breaks down substances into the substances needed by the body.