MEDIUM
Earn 100
What is difference between mass and weight.
Important Questions on Some Basic Concepts of Chemistry
EASY
What is the unit of density?
EASY
The temperature of an object is Its value in Fahrenheit scale is
MEDIUM
Let a resistor having 4 ohm resistance be connected across the terminals of a 12 volt battery. Then, the charge in coulomb passing through the resistor per second is
HARD
A hot air balloon with a payload rises in the air. Assume that the balloon is spherical in shape with diameter of and the mass of the ballon and the payload (without the hot air inside) is Temperature and pressure of outside air are and 1 atm , respectively. Molar mass of dry air is . The temperature of the hot air inside is close to [The gas constant, ]
MEDIUM
The angular diameter of a planet measured from earth is If the diameter of the planet is then its distance from the earth is
EASY
The dimension of light year
EASY
Convert into Celsius.
EASY
Among the following, the correct statement is :
EASY
The units nanometer and picometer are related as,
HARD
A certain liquid has a melting point of and a boiling point of . A thermometer is designed with this liquid and its melting and boiling points are designated at and . The melting and boiling points of water on this scale are
MEDIUM
Experimentally it was found that a metal oxide has formula Metal is present as adn in its oxide. Fraction of the metal which exists as would be :
MEDIUM
For a family, there are 150 units consumption of energy, what is the value of this consumption in Joule?
EASY
One angstrom is equal to:
MEDIUM
What is the density of water vapour at boiling point of water?
EASY
Given below are two statements :
Statement I : Astronomical unit (Au), Parsec (Pc) and Light year (ly) are units for measuring astronomical distances.
Statement II : Au < Parsec (Pc) < ly
In the light of the above statements, choose the most appropriate answer from the options given below:
EASY
The nearest star to our solar system is light years away. The distance of this star in Parsec is (Mean distance between the earth and the sun and one light year
MEDIUM
1 Pound = ________ Ounces.
HARD
of a long chain fatty acid was dissolved in of hexane. of this solution was added dropwise to the surface of water in a round watch glass. Hexane evaporates and a monolayer is formed. The distance from edge to centre of the watch glass is . What is the height of the monolayer?
[Density of fatty acid
EASY
What is the change in the temperature on Fahrenheit scale and on Kelvin scale, if an iron piece is heated from to ?
EASY
On a hilly region, water boils at . The temperature expressed in Fahrenheit scale is
