MockTests.ORG साइन इन

Structure Of The Atom Mock Tests

28 questions available

Structure Of The Atom Mock Test 1

Questions: 28

नमूना प्रश्न

Class 9 Science
An element X has the electronic configuration 2, 8, 8, 2. What is its group and period in the periodic table?
A Group 2, Period 4
B Group 4, Period 2
C Group 2, Period 2
D Group 4, Period 4
Class 9 Science
An element has electron distribution in K, L, and M shells as 2, 8, 7. Its atomic number is:
A 7
B 17
C 27
D 18
Class 9 Science
Isotopes of an element have:
A Same mass number, different atomic number
B Same atomic number, different mass number
C Same number of neutrons
D Same number of protons and neutrons
Class 9 Science
The atomic mass of an element is the weighted average of the masses of its:
A Isotopes
B Isobars
C Ions
D Elements
Class 9 Science
Which of the following is a non-metallic element that is a good conductor of electricity?
A Silicon
B Graphite
C Aluminium
D Iodine
Class 9 Science
Which of the following particles was discovered first?
A Neutron
B Electron
C Proton
D Nucleus
Class 9 Science
Rutherford's alpha-particle scattering experiment led to the discovery of the:
A Electron
B Proton
C Nucleus
D Neutron
Class 9 Science
Which of the following is a noble gas?
A Chlorine
B Nitrogen
C Argon
D Hydrogen

टिप्पणियाँ

0/2000

अभी तक कोई टिप्पणी नहीं। अपने विचार साझा करने वाले पहले व्यक्ति बनें!