Which of the following apparatus/ instruments is most suitable for obtaining both cooking oil and water from a mixture of the two?

A separating funnel can be used to separate a mixture of

A substance X, with boiling point of 58°C, is miscible with another liquid Y, of boiling point 94°C. A mixture of these two liquids can BEST be separated into its components by

Which of the following statements illustrates osmosis?

Which of the following processes provides evidence in support of the particulate nature of matter?

In descending Group VII of the periodic table, which TWO of the following trends occur?  

I. The density of the elements increases.    

II. The relative atomic mass of the elements decreases.  

III. The melting point of the elements increases.  

IV. The reactivity of the elements increases.

Radioactive isotopes are NOT normally used in the

Which of the following elements has SEVEN in its outer shell?

Which of the following processes provide evidence of the particulate nature of matter?    

I. Diffusion.

 II. Filtration.

III. Osmosis.

The atomic number of an element is defined as the number of:

The element that is used to determine the relative atomic mass of other elements is

In which of the following processes, radioactive isotopes are NOT used?

An atom with atomic structure as shown below, contains

When X and Y are stirred together in a beaker and the mixture filtered, X and Y are both present in the filtrate. Which of the following could describe the mixture formed by X and Y?      

I. Solution.    

II. Colloid.      

III. Suspension.

The atoms shown below are isotopes because they

Which of the following operations results in sublimation?

Which of the following separation technique is NOT used during the extraction of the sucrose from sugarcane?

Which set of the elements has atoms with TWO electrons in their outer shell?

Atoms of isotopes X and Y, have:.      

I. The same number of electrons.

II. The same number of protons.

III. Different number of neutrons.