EASY
UPSC CAPF AC Paper - I
IMPORTANT
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In Rutherford's experiment, which established the nuclear model of the atom, used a beam of _____.

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Important Questions on Chemistry

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 56
Which one of the following has the longest wavelength?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 57

Some sub-nuclear particles are

1. antiproton

2. μ-meson

3. π-meson

4. neutrino

5. positron

Increasing order of year of discovery is (starting from the earliest)

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 58
Which one of the following statements is not correct?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 59
Which one among the following is the most appropriate statement with respect to the 'atomic weight of an element?
HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 60

Consider the following statements

1. J.J Thomson proposed that electrons are embedded in a positive sphere.

2. Rutherford's model of the atom proposed that a very tiny nucleus is present inside the atom and electrons revolve around this nucleus.

3. Neils Bohr's model proposed that electrons are distributed in different shells with discrete energy around the nucleus. If the atomic shells are complete, then the atom will be stable and less reactive.

Which of the statements given above are correct?

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 61
Neutron is a fundamental particle which carries?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 62
An atom of carbon has 6 protons. Its mass number is 12. How many neutrons are present in the atom of the carbon?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 2>Q 63
The triad of nuclei which is isotonic is: