GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the best unit for calculating the mass of a very small object?
A
centimeters
B
milligrams
C
grams
D
kilograms
Explanation: 

Detailed explanation-1: -The standard unit of mass in the metric system in gram. To weigh lighter objects like biscuits, popcorn, etc, we use grams. To measure weights smaller than 1 gram like medicines, we can use milligrams (mg). 1 milligram is equal to one-thousandth of a gram.

Detailed explanation-2: -The most commonly used units of mass are kilogram, gram, and milligram. Of the three units, the kilogram is the largest and the milligram is the smallest. The prefix “kilo” means a thousand and “milli” means one-thousandths. A gram is the basic unit of mass.

Detailed explanation-3: -Mass-Mass is the amount of matter in an object and is normally referred to as weight. The common metric units of mass are milligram, gram, kilogram and tonne (1, 000 kilograms). Medicine, vitamins and other small objects are measured in milligrams.

Detailed explanation-4: -Scientists often measure mass with a balance. Mass of solids can be measured directly using a beam balance or an electronic balance. To calculate the mass of a liquid, measure its volume and find its density from the density table. The SI unit of mass is the kilogram (Kg).

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