EASY
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Which one among the following statements about an atom is not correct?

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 23

What are the elements which are liquids at room temperature and standard pressure?

I. Helium

II. Mercury

III. Chlorine

IV. Bromine

Select the correct answer using the codes given below:

EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 24
Glass is:
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 25
Two atoms are said to be isotopes, if _____.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 26
Who is the founder of quantum theory of radiation? 
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 27

Match Column I (Scientist) with Column II (Discovery) and select the correct answer using the codes given below the Columns.

Column I Column II
A. Goldstein 1. Atomic theory
B. Chadwick 2. Proton
C. JJ Thomson 3. Neutron
D. John Dalton 4. Electron

Codes:

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 28

Consider the following statements.

I. Atom consists of nucleus and shell.

II. Nucleus consists of protons and electrons.

III. Neutrons are present in atoms.

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

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 29
Which one among the following is the most appropriate statement with respect to the atomic weight of an element?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 30
Atomic theory of matter was given by _____.