HARD
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Which one of the following element has two electrons in the K-shell only?

50% studentsanswered this correctly

Important Questions on Chemistry

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 26
The constituent particles of a nucleus in an atom are?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 27
In an atom, the order of filling up of the orbitals is governed by _____.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 29
Which one of the following statements is correct?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 30
Regarding the atom of a chemical element, magnetic quantum number refers to _____.
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 31

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

A. Radioactivity                                 1. Moseley

B. Quantum theory                            2. Planck

C. Theory of photo  electric effect     3. Becquerel

D. Atomic number                             4. Einstein

                                                         5. Rutherford

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 32

Consider the following statements:

1. An atom consists of a positively charged sphere and the electrons are embedded in it.

2. The negative and positive charges are equal in magnitude. So, the atom as a whole is electrically neutral.

Which of the statements given above is/are correct about Thomson's model of an atom?

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 33
Rutherford's model of atom is considered unsuitable because?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 34
A monoatomic species that has 18 electrons and a net charge of 2- has _____.