9th Class Chemistry MCQs

The elements of VIIA group are known as:

1. Lanthanides
2. Actinides
3. Halogens
4. Nobel Gases

According to Mosely the chemical properties of elements are the periodic function of their?

1. Atomic Size
2. Atomic Mass
3. Atomic Radius
4. Atomic Number

The shielding effect across the period:

1. Increases
2. Decrease
3. Moderate
4. Same

The ability to attract shared pair of electron is called:

1. Electron Affinity
2. Electronegativity
3. Ionization Energy
4. Shielding Effect

In group electron affinity values decreases from top to bottom because:

1. Atomic size normal
2. Atomic size increases
3. Atomic size decreases
4. Atomic size same

All Transition Elements are:

1. Gases
2. Metals
3. Nonmetals
4. Metalloids

An example of ionic compound is:

1. H
2. CH
3. N
4. NaCl

Two fluorine atoms share one electron each in their outermost shell to achieve electronic configuration of:

1. Xe
2. Ar
3. Kr
4. Ne

At room temperature most of ionic compounds are:

1. Amorphous solids
2. Crystalline solids
3. Liquids
4. Gases

Number of electrons lost by atoms of group IIIA equals:

1. 1
2. 2
3. 3
4. 4