EASY
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

The heaviest naturally occurring element is:

50% studentsanswered this correctly

Important Questions on Chemistry

EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 126
Arrange the following elements in the increasing order of their metallic property. Li, Na, K, Rb, Cs:
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 127

Consider the following statements.

I. In the period, the value of electron affinity increases from left to right.

II. Electronegativity of the elements increases from top to bottom in a group.

Which of the above statements(s) is/are correct?

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 128

Match the following Columns.

Column I Column II
A. Lightest non-metallic element 1. Gold
B. Liquid metallic element 2. Graphite
C. Most malleable element 3. Hydrogen
D. Non-metal which is best conductor of electricity 4. Mercury
  5. Silver

Codes:

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 129
The most electronegative element among the following is
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 130

Statement I: In the periodic table of chemical element, electron affinity is always found to increase from top to bottom in a group.

Statement II: In a group, the atomic radii generally increase from top to bottom.

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 131
Arrange the following oxides of the elements in their decreasing order of basicity. Na, MgO, Al2O3, SiO, P2O5:
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 132
Which of the following represent, the correct order of ionisation potential of the elements?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 133

Consider the following statements.

I. Mercury is the only liquid metal.

II. Carbon exhibits the property of catenation.

III. The atomic size of the elements decreases in the group.

Which of the above statement(s) is/are correct?