(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Chemistry

Supply the missing word from those in the brackets:
If an element has a low ionization energy then it is likely to be ______ (metallic/ non-metallic).

The metals of group 2 from top to bottom are: Be, Mg, Ca, Sr, Ba. Which of these metals will form ions most readily and why?

Fill in the blank from the choices given below
Across a period, the ionisation potential ____________.

which element has the highest ionisation potential.

Choose the correct answer from the choice given:
Ionisation potential increases over a period from left to right because the

Arrange the following as per the instruction given in the bracket:

Na, K, Cl, S, Si (increasing order of ionization energy)

Rewrite the following sentence by using the correct > (greater than) or < (less than) in the blank given 
The ionization potential of potassium is _______ that of sodium.

Fill in the blank by selecting the correct word from the option.
If an element has a low ionization energy then it is likely to be ________ 

Fill in the blank from the choice given in bracket.
The energy required to remove on electron from a natural isolated gaseous atom and convert it into a positively charged gaseous ion is called ____________

Arrange the following as per the instruction given in the bracket
Na,Li,K (Increasing ionization energy)

Define
an electrovalent compound

Define
a covalent compound.

Give three uses of ammonium chloride.

Explain the following:

Ammonium nitrate is not used in the laboratory preparation of NH₃.

Give one use each of four different compounds of ammonia.

The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer. 

The ionization potential: 

Why drying agents such as P₂O₅ and CaCl₂ are not used to dry NH₃?

Name the common refrigerant. How does it deplete the ozone layer?

State the advantages of using ammonia as a refrigerant?