Some Basic Concepts of Chemistry
| Description: Some Basic Concepts of Chemistry for class xi/xii, medical entrance, pharma, engineering entrance and other competitive and entrance exams | |
| Number of Questions: 25 | |
| Created by: Amit Pandey | |
| Tags: Chemistry Class XI/XII Medical Entrance Pharma Engineering Entrance Medical IIT JEE AIEEE CET Basic Concepts of Chemistry Some Basic Concepts of Chemistry |
The bond angle of water molecule in degree is
The substances which have fixed composition are called
When the temperature is 45 degree in the celcius scale, its value in the fahrenheit scale will be
When two or more atoms of different elements combine, we get
What is the number of moles in 42 grams of nitrogen?
a.m.u. can also be called as
According to Dalton
The amount of matter present in a substance is called
One mole of a substance contains mass equal to
The molecular weight of ammonia (in grams) is
The molecular weight of ethane is approximately equal to
The number of moles of solute per liter of solution is called its
The number of moles of solute per kilogram of solvent is called
Mole fraction can be defined as
The molar volume is equal to
Calculate the molarity of a solution containing 3 moles of a substance in 250 ml. of water.
Calculate the mole fraction of 10 g. of NaOH in 18 g. of water.
The mass contained in unit volume of a substance is called its
One a.m.u. is defined to be equal to
Limiting reagent is
What is an amalgam?
What is the number of moles of hydrogen in 3 moles of methane?
The S.I. unit of time is
What is the number of moles of atoms in 32 grams of oxygen?
Pure gold is