Sardar Patel Public School
Kamlapur, Ponda, Bokaro, Tenm 2020-21
SECTION-A-CHEMISTRY
Subject Science
celectrons and protons
1. objective type questions. 15-5
which of the following most suitable for Summer?
a cotton b Nylon c. Polyester d. sik
The electrons present in the outermost shell are called
a Valency electrons d. Octate electrons Duplet electrons
e Valence electrons
3. The nucleons are
z protons and electrons belectrons and neutrons
The atomic number of sodium is 11 and its mass number is 23. It has
2.11 neutrons and 12 protons b. 12 protons and 11 electrons
c 11 electrons and 12 neutrons d. 12 electrons and 11 neutrons
The electronic configuration of chlorine is
C287
1. Give reason 3=6
0.2.7.3
A gas fuis completely the vessel which is kept gas exerts pressure on the walls of the centainer
3-A wooden table should be called a solid
n. calculate the mass of the following 13-3
Answers
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1. Cotton
2.Valency electron
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