Some Basic Concepts of Chemistry Quiz 1

The branch of chemistry which deals with carbon compounds is called ……………. chemistry.

A/an is a simple combination of two or more substances in which the constituent substances retain their separate identities.

Which one of the following is NOT a mixture?

The sum of the masses of reactants and products is equal in any physical or chemical reaction. This is in accordance with …………

A sample of calcium carbonate $(CaCO_3 )$ has the following percentage composition: Ca = 40 %; C = 12 %; O = 48 %. If the law of definite proportions is true, then the weight of calcium in 4 g of a sample of calcium carbonate from another source will be …………

Two elements, A and B, combine to form two compounds in which ‘a’ g of A combines with ‘$b_1$ ’ and ‘$b_2$ ’g of B respectively. According to law of multiple proportion ……………

At constant temperature and pressure, two litres of hydrogen gas react with one litre of oxygen gas to produce two litres of water vapour. This is in accordance with …………

One mole of oxygen molecule weighs …………

The mass of 0.002 mol of glucose $(C_6 H_{12} O_6 )$ is …………

Which of the following is CORRECT?