Practice Periodic Table – GK Quiz with Answers – Level 3

Consider the following developments in the classification of elements:

1. Moseley showed that atomic number is a more fundamental property than atomic mass.

2. Döbereiner grouped similar elements into sets of three.

3. Mendeleev arranged elements by atomic mass and left gaps for undiscovered elements.

4. Newlands proposed the Law of Octaves.

Select the correct chronological order.

Match List-I with List-II:

Select the correct answer using the codes given below.

Consider the following statements about Mendeleev's predicted elements:

1. Eka-aluminium was later found to be gallium.

2. Eka-silicon was later found to be scandium.

Which of the statements given above is/are correct?

Consider the following statements about periodic trends:

1. Metallic character decreases on moving down a group.

2. Atomic size increases down a group because new shells are added.

Which of the statements given above is/are correct?

Consider the following statements about Newlands' Law of Octaves:

1. Elements were arranged in order of increasing atomic mass.

2. The law worked well for heavier elements as well as lighter ones.

3. Lithium and sodium are an example of elements showing similar properties.

Which of the statements given above is/are correct?

Consider the following statements about Mendeleev:

1. He was a Russian chemist.

2. Sixty-three elements were known when he began his work.

3. He did not leave any gaps in his periodic table.

Which of the statements given above is/are correct?

Consider the following statements:

1. According to the Modern Periodic Law, the properties of elements are a periodic function of their atomic number.

2. Moseley showed that atomic mass is a more fundamental property than atomic number.

Which of the statements given above is/are NOT correct?

Consider the following statements about trends in the modern periodic table:

1. On moving from left to right across a period, atomic size decreases because the nuclear charge increases and pulls the electrons inward.

2. On moving from left to right across a period, metallic character increases.

Which of the statements given above is/are correct?

Match List-I with List-II:

Select the correct answer using the codes given below.

Consider the following statements about Newlands' Law of Octaves:

1. Newlands compared the repetition of properties to the notes of music.

2. Lithium and sodium are an example of elements showing similar properties under this law.

3. The law continued to work well even after the noble gases were discovered.

Which of the statements given above is/are correct?